CN209025725U - Adaptive urea mixer - Google Patents
Adaptive urea mixer Download PDFInfo
- Publication number
- CN209025725U CN209025725U CN201821908463.8U CN201821908463U CN209025725U CN 209025725 U CN209025725 U CN 209025725U CN 201821908463 U CN201821908463 U CN 201821908463U CN 209025725 U CN209025725 U CN 209025725U
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- deflector
- movable plate
- fixed ring
- plate
- support members
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Abstract
The utility model discloses a kind of adaptive urea mixer, including shell, and enclosure interior is disposed with first movement plate, the second movable plate and the first fixed ring from air inlet to exhaust outlet；First fixed ring is fixedly connected on the inner sidewall of shell, and the first fixed ring is equipped with multiple guide posts, is provided with the first limiting section and the second limiting section in guide post；First and second movable plate is sheathed in guide post, and the first resilient support members are arranged in the guide post between the second limiting section and first movement plate, and the second resilient support members are arranged in the guide post between the first fixed ring and the second movable plate；First and second deflector is fixed in the first fixed ring, forms blending space between first movement plate, the second movable plate, the first deflector and the second deflector；Urea nozzle is set in housing sidewall corresponding with blending space.The adaptive urea mixer adaptively extraction flow variation can remove internal junction crystal automatically, prevent crystalline solid from blocking urea mixer.
Description
Technical field
The utility model relates to engine exhaust system technical fields, more particularly to a kind of adaptive urea mixer.
Background technique
SCR system refers to selective catalytic reduction system operating, is for NO in exhaust gas from diesel vehicle dischargexA processing work
That is, under the effect of the catalyst skill sprays into reducing agent ammonia or urea, the NO in tail gasxIt is reduced into N2And H2O.Catalyst has expensive
Two class of metal and base metal.SCR system is initially applied to power-plant flue gas denitration, as vehicular emission regulation is more and more tighter
SCR system is gradually used for automotive emission control by lattice.Urea is mostly used to decompose generation on motor-vehicle tail-gas at present
NH3As the urea/SCR technology of reducing agent, in used urea SCR system, aqueous solution of urea sprays into exhaust pipe through urea nozzle, needs
Reducing agent (NH is formed through physical and chemical processes such as pervaporation, pyrolysis, hydrolysis3, HNCO) come and engine emission pollutant NOx
Redox reaction occurs, being finally reached reduces NOxThe purpose of discharge.Wherein, it is generally mixed using urea in used urea SCR system
Device carrys out the movement of tissue air-flow, and urea mixer is generally located between urea nozzle and catalyst carrier.
Urea mixer can promote urea and exhaust mixing, optimization urea distribution, moreover it is possible to reduce NH_3 leakage, but arrange
Under the lower operating condition of temperature degree, aqueous solution of urea can occur due to touching low temperature wall surface, atomization quality difference etc. cannot be complete
The phenomenon that decomposition, generates the complex compound of the complicated components such as ammeline and melamine in reaction process, these complexings
Object aggregation will form crystalline solid to a certain extent, and the exhaust gas flow in existing urea mixer is very slow, and more aggravation finishes crystalline substance
The formation of body.This crystalline solid overwhelming majority appears in urea mixer surface, and white bulk, quality is hard, and can be with
The sustained firing of aqueous solution of urea constantly increases, and crystalline solid increase can block urea mixer, the row of being significantly greatly increased to a certain extent
Gas back pressure, causes overall performance to deteriorate.
Utility model content
The purpose of the utility model is to provide a kind of adaptive urea mixer, to solve above-mentioned of the existing technology ask
Topic, can under adaptive engine difference operating condition extraction flow variation, it is automatic to remove internal junction crystal, prevent crystalline solid from blocking
Urea mixer avoids engine exhaust back pressure excessive, guarantees the service performance of engine.
To achieve the above object, the utility model provides following scheme:
The utility model provides a kind of adaptive urea mixer, including shell, first movement plate, the second movable plate,
One fixed ring, the first deflector, the second deflector and urea nozzle；The shell is hollow cylinder, and the shell is opposite two
End be respectively formed air inlet and exhaust outlet, the enclosure interior is set gradually from the air inlet to the exhaust outlet
State first movement plate, second movable plate and first fixed ring；First fixed ring is circumferentially fixed be connected to it is described
On the inner sidewall of shell, it is circumferentially fixedly installed multiple guide posts disposed in parallel in first fixed ring, and each described leads
Xiang Zhujun extends to the air inlet, and the first limiting section and the second limiting section, and described are provided in each guide post
Two limiting sections are between first fixed ring and first limiting section；The first movement plate sliding sleeve is set to described the
In the guide post between one limiting section and second limiting section, the second movable plate sliding sleeve is set to second limit
In the guide post between position portion and first fixed ring, and between second limiting section and the first movement plate
The first resilient support members are arranged in the guide post, described between first fixed ring and second movable plate is led
The second resilient support members are arranged on column；One end of first deflector and second deflector be fixedly connected in
In first fixed ring, and first deflector and second deflector extend and sequentially pass through to the air inlet
First is respectively arranged on second movable plate and the first movement plate, the first movement plate and second movable plate
Notch and the second notch, first notch and second notch are located at the two sides of first deflector, and described
Blending space is formed between one movable plate, second movable plate, first deflector and second deflector；The urine
Plain nozzle is set in the housing sidewall corresponding with the blending space.
It preferably, further include the second fixed ring, the circumferentially fixed inner sidewall for being connected to the shell of the second fixed ring
On, and second fixed ring is between the first movement plate and the air inlet, first deflector, described second
Deflector and each guide post all extend to second fixed plate and are fixedly connected with second fixed plate.
Preferably, for connecting with exhaust pipe, the rigidity of first resilient support members is greater than described the air inlet
The rigidity of second resilient support members.
Preferably, second deflector includes the first arc panel of the axis that an axis is parallel to the shell.
Preferably, first deflector includes water conservancy diversion plate and from molding second arc panel in the deflector side,
The axis of second arc panel is parallel to the axis of the shell.
Preferably, first resilient support members and second resilient support members are spring.
Preferably, it is separately provided for wearing first water conservancy diversion on the first movement plate and second movable plate
The first guide groove and the second guide groove of plate, first guide groove and second guide groove are between first deflector
Gap cooperation；It is separately provided for wearing the third of second deflector on the first movement plate and second movable plate
Guide groove and the 4th guide groove, the third guide groove and the 4th guide groove with the second deflector clearance fit.
Preferably, there are three the guide post settings, and the circumferential direction in first fixed ring is uniformly distributed.
Preferably, the original state of first resilient support members and second resilient support members is compression shape
State.
Preferably, multiple ventholes are distributed on the first movement plate and second movable plate.
The utility model achieves following technical effect compared with the existing technology:
Adaptive urea mixer provided by the utility model, first movement plate, the second movable plate, the first deflector and
Blending space is formed between two deflectors, in use, air inlet is with exhaust pipe for connecting, when exhaust emissions, tail gas is from first
Notch enters to blending space mixed with the aqueous solution of urea that urea nozzle is sprayed after escaped and enter by the second notch to subsequent
Catalyst converter in carry out catalysis reaction, aqueous solution of urea forms eddy flow, mixed effect under the action of exhaust in blending space
It is good, the generation of crystalline solid can be reduced to a certain extent.When tail gas pressure is greater than the second resilient support members to the second movable plate
Elastic anchorage force when, the second movable plate is mobile to the direction close to the first fixed ring, when tail gas pressure is greater than the first elasticity branch
When supportting elastic anchorage force of the element to first movement plate, first movement plate is moved to close to the direction of the second movable plate movement, first
During movable plate and the second movable plate are mobile, the crystalline solid adhered on the first deflector and the second deflector side wall is mobile by one
Plate and the second movable plate scratch, and are discharged with tail gas, and the width of the first deflector is set according to the spray regime of urea nozzle
Meter, can be completely covered the easy crystal region in urea nozzle spray regime, prevent the growth of crystalline solid, can be adaptive
Automatic removing internal junction crystal is realized in the variation of extraction flow under Different Work Condition of Engine, prevents crystalline solid blocking urea mixing
Device avoids engine exhaust back pressure excessive, guarantees the service performance of engine, improves engine and the mixing of adaptive urea
The service life of device.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram of adaptive urea mixer provided by the utility model；
Fig. 2 is the structural representation that adaptive urea mixer provided by the utility model removes an angle after shell
Figure；
Fig. 3 is the structural representation that adaptive urea mixer provided by the utility model removes another angle after shell
Figure；
Fig. 4 is that adaptive urea mixer provided by the utility model removes the structural representation after shell and the second fixed ring
Figure；
Fig. 5 is that adaptive urea mixer provided by the utility model removes shell, the second fixed ring and first movement plate
The structural schematic diagram of an angle afterwards；
Fig. 6 is that adaptive urea mixer provided by the utility model removes shell, the second fixed ring and first movement plate
The structural schematic diagram of another angle afterwards.
In figure: 1- shell；2- first movement plate；The second movable plate of 3-；The first fixed ring of 4-；The first deflector of 5-；6-
Two deflectors；7- urea nozzle；8- air inlet；9- guide post；The first limiting section of 10-；The second limiting section of 11-；The first elasticity of 12-
Support component；The second resilient support members of 13-；14- blending space；The first notch of 15-；The second notch of 16-；17- second is fixed
Ring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of adaptive urea mixer, to solve above-mentioned of the existing technology ask
Topic, can under adaptive engine difference operating condition extraction flow variation, it is automatic to remove internal junction crystal, prevent crystalline solid from blocking
Urea mixer avoids engine exhaust back pressure excessive, guarantees the service performance of engine.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
As shown in figs. 1 to 6, the utility model provides a kind of adaptive urea mixer, specific in the utility model one
In embodiment, adaptive urea mixer includes shell 1, first movement plate 2, the second movable plate 3, the first fixed ring 4, first leads
Flowing plate 5, the second deflector 6 and urea nozzle 7；Shell 1 is hollow cylinder, and shell 1 is respectively formed air inlet in two opposite ends
Mouthfuls 8 and exhaust outlet, first movement plate 2, the second movable plate 3 and first are disposed with from air inlet 8 to exhaust outlet inside shell 1
Fixed ring 4；On the circumferentially fixed inner sidewall for being connected to shell 1 of first fixed ring 4, circumferentially it is fixedly installed in the first fixed ring 4
Multiple guide posts disposed in parallel 9, and each guide post 9 extends to air inlet 8, is provided with the first limit in each guide post 9
Portion 10 and the second limiting section 11, and the second limiting section 11 is between the first fixed ring 4 and the first limiting section 10；First movement plate
2 sliding sleeves are set in guide post 9 between the first limiting section 10 and the second limiting section 11, and 3 sliding sleeve of the second movable plate is set to the
In guide post 9 between two limiting sections 11 and the first fixed ring 4, and the guiding between the second limiting section 11 and first movement plate 2
It is arranged with the first resilient support members 12 on column 9, is arranged in the guide post 9 between the first fixed ring 4 and the second movable plate 3
Two resilient support members 13；One end of first deflector 5 and the second deflector 6 is fixedly connected in the first fixed ring 4, and
One deflector 5 and the second deflector 6 to the extension of air inlet 8 and sequentially pass through the second movable plate 3 and first movement plate 2, and first
The first notch 15 and the second notch 16, the first notch 15 and the second notch 16 are respectively arranged on movable plate 2 and the second movable plate 3
Be located at the two sides of the first deflector 5, first movement plate 2, the second movable plate 3, the first deflector 5 and the second deflector 6 it
Between formed blending space 14；Urea nozzle 7 is set on 1 side wall of shell corresponding with blending space 14 and is used for blending space 14
Interior injection aqueous solution of urea.
The cross sectional shape of adaptive urea mixer provided by the utility model, first movement plate 2 and the second movable plate 3 with
The cross sectional shape of 1 inner cavity of shell is adapted, and is respectively arranged with the first notch 15 on first movement plate 2 and the second movable plate 3
With the second notch 16, the first notch 15 and the second notch 16 are located at the two sides of the first deflector 5, the first notch 15 and second
Notch 16 is preferably opened in respectively on the edge of first movement plate 2 and the second movable plate 3, first movement plate 2, the second movable plate 3,
Blending space 14 is formed between first deflector 5 and the second deflector 6, in use, air inlet 8 is used to connect with exhaust pipe, tail
Gas discharge when, tail gas from the aqueous solution of urea that the first notch 15 enters to blending space 14 with urea nozzle 7 is sprayed mix after by
Second notch 16 is escaped and enter to catalysis reaction is carried out in subsequent catalyst converter, and aqueous solution of urea is under the action of exhaust mixed
It closes and forms eddy flow in space 14, good mixing effect can reduce the generation of crystalline solid to a certain extent.When tail gas pressure is greater than the
When two resilient support members 13 are to the elastic anchorage force of the second movable plate 3, the second movable plate 3 is to the side close to the first fixed ring 4
To movement, when tail gas pressure is greater than elastic anchorage force of first resilient support members 12 to first movement plate 2, first movement plate
2 is mobile to the direction of close second movable plate 3, during first movement plate 2 and the movement of the second movable plate 3, the first deflector 5
It is scratched with the crystalline solid adhered on 6 side wall of the second deflector by a movable plate and the second movable plate 3, and is discharged with tail gas,
The width of first deflector 5 is designed according to the spray regime of urea nozzle 7, and 7 spray regime of urea nozzle can be completely covered
Interior easy crystal region, has prevented the growth of crystalline solid, can under adaptive engine difference operating condition extraction flow variation, it is real
Internal junction crystal is now removed automatically, is prevented crystalline solid from blocking urea mixer, is avoided engine exhaust back pressure excessive, guarantee to start
The service performance of machine improves the service life of engine and adaptive urea mixer.
In another specific embodiment of the utility model, in order to improve adaptive urea mixer structure stability and strong
Degree, adaptive urea mixer further includes the second fixed ring 17, the circumferentially fixed inner sidewall for being connected to shell 1 of the second fixed ring 17
On, and the second fixed ring 17 is between first movement plate 2 and air inlet 8, the first deflector 5, the second deflector 6 and respectively leads
The second fixed plate is all extended to column 9 and is fixedly connected with the second fixed plate.
In another specific embodiment of the utility model, the air inlet 8 of adaptive urea mixer is used for and exhaust pipe
Connection, the rigidity of the first resilient support members 12 are greater than the rigidity of the second resilient support members 13.When pressure at expulsion is gradually increased
When, since the rigidity of the first resilient support members 12 is greater than the rigidity of the second resilient support members 13, the second movable plate 3 can be prior to
First movement plate 2 is mobile, and the moving distance of the second movable plate 3 is greater than the moving distance of first movement plate 2, so that mixing is empty
Between 14 volume become larger, realize the variation for adapting to the extraction flow of Different Work Condition of Engine and change mixing efficiency, both ensure that
The mixed effect of aqueous solution of urea and tail gas so that aqueous solution of urea mixes sufficiently with tail gas, and can effectively avoid engine
Exhaust back pressure is excessive, guarantees that the service performance of engine, the rigidity of the first resilient support members 12 are set as in maximum exhaust
Under pressure, so that the position after the movement of first movement plate 2 is no more than the position of urea nozzle 7, it is preferably such that first movement plate 2
Position be maintained at except the spray regime of urea nozzle 7.
In another specific embodiment of the utility model, in order to facilitate the shifting of first movement plate 2 and the second movable plate 3
It is dynamic, reduce moving resistance, the second deflector 6 of adaptive urea mixer includes the of the axis that an axis is parallel to shell 1
One arc panel.First deflector 5 includes water conservancy diversion plate and from molding second arc panel in deflector side, the axis of the second arc panel
Line is parallel to the axis of shell 1.
In another specific embodiment of the utility model, 12 He of the first resilient support members of adaptive urea mixer
Second resilient support members 13 are spring.
In another specific embodiment of the utility model, the first movement plate 2 of adaptive urea mixer and second is moved
It is separately provided for wearing the first guide groove and the second guide groove of the first deflector 5, the first guide groove and second on movable plate 3
Guide groove with 5 clearance fit of the first deflector；It is separately provided for wearing on first movement plate 2 and the second movable plate 3
The third guide groove and the 4th guide groove of two deflectors 6, third guide groove and the 4th guide groove are matched with 6 gap of the second deflector
It closes.
In another specific embodiment of the utility model, there are three the settings of guide post 9 of adaptive urea mixer, and
Circumferential direction in the first fixed ring 4 is uniformly distributed.
In another specific embodiment of the utility model, when capacity reduces, in order to enable first movement plate 2 and the
Two movable plates 3 are easy to homing, avoid shaking in guide post 9 in adaptive urea mixer use process due to elastic element
It moves and generates noise, the first resilient support members 12 of adaptive urea mixer and the initial shape of the second resilient support members 13
State is compressive state, so that the both ends of the first resilient support members are pressed on respectively on first movement plate and the second limiting section,
The both ends of second resilient support members are pressed on respectively on the second movable plate and the first fixed ring.
In another specific embodiment of the utility model, in order to further decrease back pressure, adaptive urea mixer
Multiple ventholes are distributed on first movement plate 2 and the second movable plate 3.
It should be noted that adaptive urea mixer provided by the utility model, however it is not limited to first movement only be arranged
The movable plate that two pieces of plate and the second movable plate can be slided along guide post, can be arranged between the second movable plate and the first fixed ring
Any sliding sleeve is set to the movable plate in guide post, and venthole is opened up on each movable plate, between adjacent movable plate with
And first be each provided with resilient support members between fixed ring and neighbouring movable plate, it is provided by the utility model adaptive
Urea mixer includes at least first movement plate and the second movable plate, so that first movement plate, the second movable plate, first leading
Blending space is formed between flowing plate and the second deflector to mix convenient for aqueous solution of urea with tail gas, is conducive to improve mixing efficiency.?
It is not intended to limit the shape of first movement plate and the second movable plate, can be realized the tail for sliding in shell and making emission by exhaust pipe
Gas is entered in blending space and is mixed with aqueous solution of urea.Adaptive urea mixer provided by the utility model, the
One resilient support members and the second resilient support members are also not necessarily limited to spring, other can play the role of the elasticity member of resilient support
Part can also.Adaptive urea mixer provided by the utility model, does not limit the first limiting section and the second limiting section and shape yet
And structure setting, the first limiting section and the second limiting section are detachably connected or are fixedly connected in guide post, as long as can
Realize the moving displacement for limiting first movement plate and the second movable plate respectively.Adaptive urea provided by the utility model is mixed
Clutch does not limit the cross-sectional shape of housing cavity yet, is round, rectangular or other polygons.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. a kind of adaptive urea mixer, it is characterised in that: fixed including shell, first movement plate, the second movable plate, first
Ring, the first deflector, the second deflector and urea nozzle；
The shell is hollow cylinder, and the shell is respectively formed air inlet and exhaust outlet, the shell in two opposite ends
Inside is disposed with the first movement plate, second movable plate and described first from the air inlet to the exhaust outlet
Fixed ring；
It is circumferentially fixed in first fixed ring to set on the circumferentially fixed inner sidewall for being connected to the shell of first fixed ring
Multiple guide posts disposed in parallel are equipped with, and each guide post extends to the air inlet, are all provided in each guide post
It is equipped with the first limiting section and the second limiting section, and second limiting section is located at first fixed ring and first limiting section
Between；
The first movement plate sliding sleeve is set in the guide post between first limiting section and second limiting section,
The second movable plate sliding sleeve is set in the guide post between second limiting section and first fixed ring, and institute
It states and is arranged with the first resilient support members in the guide post between the second limiting section and the first movement plate, described first
The second resilient support members are arranged in the guide post between fixed ring and second movable plate；
One end of first deflector and second deflector is fixedly connected in first fixed ring, and described
One deflector and second deflector extend to the air inlet and sequentially pass through second movable plate and described first
It is respectively arranged with the first notch and the second notch on movable plate, the first movement plate and second movable plate, described first
Notch and second notch are located at the two sides of first deflector, the first movement plate, second movable plate,
Blending space is formed between first deflector and second deflector；
The urea nozzle is set in the housing sidewall corresponding with the blending space.
2. adaptive urea mixer according to claim 1, it is characterised in that: it further include the second fixed ring, described
On the circumferentially fixed inner sidewall for being connected to the shell of two fixed rings, and second fixed ring be located at the first movement plate with
Between the air inlet, first deflector, second deflector and each guide post all extend to described second
Fixed plate is simultaneously fixedly connected with second fixed plate.
3. adaptive urea mixer according to claim 1, it is characterised in that: the air inlet is used to connect with exhaust pipe
It connects, the rigidity of first resilient support members is greater than the rigidity of second resilient support members.
4. adaptive urea mixer according to claim 1, it is characterised in that: second deflector includes an axis
It is parallel to the first arc panel of the axis of the shell.
5. adaptive urea mixer according to claim 1, it is characterised in that: first deflector includes that water conservancy diversion is flat
Plate and from molding second arc panel in the deflector side, the axis of second arc panel is parallel to the axis of the shell
Line.
6. adaptive urea mixer according to claim 1, it is characterised in that: first resilient support members and institute
Stating the second resilient support members is spring.
7. adaptive urea mixer according to claim 1, it is characterised in that: the first movement plate and described second
It is separately provided for wearing the first guide groove and the second guide groove of first deflector, first guiding on movable plate
Slot and second guide groove with the first deflector clearance fit；On the first movement plate and second movable plate
It is separately provided for wearing the third guide groove and the 4th guide groove of second deflector, the third guide groove and described
4th guide groove with the second deflector clearance fit.
8. adaptive urea mixer according to claim 1, it is characterised in that: there are three the guide post settings, and
Circumferential direction in first fixed ring is uniformly distributed.
9. adaptive urea mixer according to claim 1, it is characterised in that: first resilient support members and institute
The original state for stating the second resilient support members is compressive state.
10. adaptive urea mixer according to claim 1, it is characterised in that: the first movement plate and described
Multiple ventholes are distributed on two movable plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908463.8U CN209025725U (en) | 2018-11-19 | 2018-11-19 | Adaptive urea mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908463.8U CN209025725U (en) | 2018-11-19 | 2018-11-19 | Adaptive urea mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209025725U true CN209025725U (en) | 2019-06-25 |
Family
ID=66910717
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821908463.8U Withdrawn - After Issue CN209025725U (en) | 2018-11-19 | 2018-11-19 | Adaptive urea mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209025725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209582A (en) * | 2018-11-19 | 2019-01-15 | 南京朗森自动化设备有限公司 | adaptive urea mixer |
-
2018
- 2018-11-19 CN CN201821908463.8U patent/CN209025725U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209582A (en) * | 2018-11-19 | 2019-01-15 | 南京朗森自动化设备有限公司 | adaptive urea mixer |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190625 Effective date of abandoning: 20200331 |
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| AV01 | Patent right actively abandoned |