CN113508938A - Mask with ultraviolet sterilization effect - Google Patents
Mask with ultraviolet sterilization effect Download PDFInfo
- Publication number
- CN113508938A CN113508938A CN202010274387.5A CN202010274387A CN113508938A CN 113508938 A CN113508938 A CN 113508938A CN 202010274387 A CN202010274387 A CN 202010274387A CN 113508938 A CN113508938 A CN 113508938A
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- CN
- China
- Prior art keywords
- shell
- cover body
- vent
- housing
- ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 40
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 38
- 230000000694 effects Effects 0.000 title claims abstract description 16
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000002070 germicidal effect Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 8
- 241000894006 Bacteria Species 0.000 description 5
- 241000700605 Viruses Species 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- -1 droplets Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention provides a mask with ultraviolet sterilization effect, which comprises: a cover body, which can cover the mouth and nose of a user and is provided with a first vent and a one-way exhaust structure; the shell is provided with at least one air inlet, a second vent and a sterilization channel communicated with the air inlet and the second vent, and the second vent of the shell is communicated with the first vent of the cover body; the ultraviolet component can emit ultraviolet rays and is arranged in the shell, and the ultraviolet rays emitted by the ultraviolet component irradiate the sterilization channel of the shell; the filter component is of a porous structure, is arranged in the shell and covers the second vent hole of the shell, so that the air entering from the air inlet of the shell can reach the cover body only after passing through the filter component; by the structure, the effects of sterilization and filtration can be achieved.
Description
Technical Field
The invention relates to a mask with ultraviolet sterilization effect; in particular to a mask which can really sterilize and filter and has the ultraviolet sterilization effect.
Background
Known masks are mainly used for filtering air, and mainly use more than one layer of filtering material to cover the mouth and nose of a user so as to filter objects such as viruses, bacteria, body fluid, droplets, suspended particles and the like. However, since the conventional mask has a problem in that objects such as viruses and bacteria are attached to the mask, the mask must be replaced in a high risk area because the surface of the mask may be excessively attached with viruses and bacteria, thereby shortening the life of the conventional mask.
In view of the above, the inventors have studied actively, and conducted many years of experience in research on related products, and finally developed the present invention through continuous experiments and improvements.
Disclosure of Invention
The invention aims to provide a mask which can really achieve the effects of sterilization and filtration and has the ultraviolet sterilization effect.
The structure of the present invention for achieving the above object includes: a cover body, which can cover the mouth and nose of a user and is provided with a first vent and a one-way exhaust structure; the shell is provided with at least one air inlet, a second vent and a sterilization channel communicated with the air inlet and the second vent, and the second vent of the shell is communicated with the first vent of the cover body; the ultraviolet component can emit ultraviolet rays and is arranged in the shell, and the ultraviolet rays emitted by the ultraviolet component irradiate the sterilization channel of the shell; and a filter assembly which is of a porous structure and is arranged in the shell and covers the second vent hole of the shell, so that the air entering from the air inlet of the shell can reach the cover body only by passing through the filter assembly.
Preferably, the housing has an insertion opening communicating with the sterilization channel and is connected to a detachable structure; this dismouting structure includes: the first cover body is fixedly arranged in the sterilization channel of the shell, the center of the first cover body is provided with a third vent hole, and the third vent hole of the first cover body is communicated with the second vent hole of the shell; the second cover body is detachably clamped in the embedding opening of the shell; one end of the tubular support is fixedly arranged on the second cover body, the other end of the tubular support is clamped with the first cover body when the second cover body is clamped on the shell, and the side wall of the tubular support is provided with a plurality of ventilation openings; the filter assembly covers the outer side of the tubular support and covers the third vent hole of the first cover body, so that air entering from the air inlet of the shell can reach the cover body only after passing through the filter assembly; by the structure, the filter component can be conveniently replaced, and the air quantity passing through the filter component can be increased.
Preferably, the ultraviolet component comprises: the power supply circuit board is fixedly arranged in the sterilization channel of the shell; and a battery, which is detachably connected with the power circuit board; and a switch connected with the power circuit board; and an ultraviolet unit, which is detachably connected with the power circuit board and consists of a plurality of ultraviolet circuit boards and a plurality of ultraviolet lamps; by the structure, the air inlet of each shell can be conveniently irradiated by ultraviolet rays, and the production, the manufacture and the assembly of the ultraviolet unit can be conveniently realized.
Preferably, the battery is arranged inside the tubular support, so that space can be saved.
Preferably, the housing is tubular and longitudinally connected to the cover; the second vent of the shell is positioned at the top end, the air inlet of the shell is positioned at the bottom of the side wall, and the embedding port of the shell is positioned at the bottom end; can meet the requirements of different users.
Preferably, the housing is tubular and transversely connected to the cover; the second vent of the shell is positioned at the top of the side wall, the air inlet of the shell is positioned at the bottom of the side wall, and the embedding port of the shell is positioned at the end part; can meet the requirements of different users.
To achieve the above and other objects, and in accordance with the purpose of the invention, as embodied and broadly described herein, a preferred embodiment of the present invention will be described in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic view of the present invention with the cover removed.
Fig. 3 is a partial cross-sectional view of the present invention.
Fig. 4 is a schematic view of the uv assembly of the present invention.
FIG. 5 is a perspective view of the present invention with a removable housing attached.
Fig. 6 is an exploded view of the housing of the present invention connected to a removable structure.
Fig. 7 is a schematic view of the combination of the housing and the detachable structure of the present invention.
Fig. 8 is an exploded view of the housing, mounting structure, etc. of the present invention.
FIG. 9 is a schematic view of the UV unit of the present invention comprising a plurality of UV circuit boards and a plurality of UV lamps.
Fig. 10 is a schematic view of another embodiment of the uv assembly of the present invention.
FIG. 11 is a schematic view of the present invention limiting air flow.
Fig. 12 is a schematic view of the housing of the present invention in a transverse direction.
Fig. 13 is a transverse exploded view of the housing of the present invention.
FIG. 14 is a schematic view of another embodiment of the present invention for restricting air flow.
Reference numerals:
100: mask with ultraviolet sterilization effect
1. 1a, 1 b: cover body
11: first vent
12: one-way exhaust structure
13: belt body
2. 2a, 2 b: outer casing
21. 21a, 21 b: air inlet
22. 22a, 22 b: second vent
23. 23 a: sterilization channel
24a, 24 b: embedded port
25 a: the first space
3. 3 a: ultraviolet ray assembly
31: circuit board
32: battery with a battery cell
33: switch with a switch body
34: ultraviolet lamp
35 a: power supply circuit board
351 a: USB joint
352a, 352 b: vent port
36 a: battery with a battery cell
37 a: switch with a switch body
38 a: ultraviolet unit
381 a: ultraviolet circuit board
382 a: ultraviolet lamp
4. 4a, 4 b: filter assembly
5 a: dismounting structure
51a, 51 b: first cover body
52 a: second cover body
53 a: tubular stent
531 a: ventilation opening
511a, 511 b: third vent
Detailed Description
As shown in fig. 1 to 3, the mask 100 having ultraviolet sterilization function according to the present invention includes: a mask body 1, which can cover the mouth and nose of a user and is provided with a first vent 11 and a one-way exhaust structure 12; and a housing 2 having at least one air inlet 21, a second air vent 22 and a sterilization channel 23 connecting the air inlet 21 and the second air vent 22, the second air vent 22 of the housing 2 being communicated with the first air vent 11 of the cover 1; and an ultraviolet component 3 which can emit ultraviolet rays and is arranged in the shell 2, and the ultraviolet rays emitted by the ultraviolet component irradiate the sterilization channel 23 of the shell 2; and a filter assembly 4, which is a porous structure, is arranged in the housing 2 and covers the second vent opening 22 of the housing 2, so that the air entering from the air inlet 21 of the housing 2 can reach the cover body 1 only after passing through the filter assembly 4; by the structure, the effects of sterilization and filtration can be achieved. As will be described in detail below.
The form of the mask body 1 is not limited, and at least can cover the mouth and nose of a user, and the mask body is provided with a first air vent 11 and a one-way exhaust structure 12. In addition, the mask body 1 can be made of elastic material so as to be convenient for matching with the face shape of a user. Furthermore, the cover body 1 may have a belt body 13 for the user to wear.
The housing 2 has at least one air inlet 21, a second air outlet 22 and a sterilization channel 23 connecting the air inlet 21 and the second air outlet 22. The second vent 22 of the housing 2 communicates with the first vent 11 of the cover 1. The housing is not limited to be in a longitudinal shape (as shown in fig. 5), a transverse shape (as shown in fig. 12) or other structures, and is mainly used for arranging the uv module 3 and the filter module 4 and ensuring that the air entering from the air inlet 21 is firstly subjected to uv sterilization and then filtered before entering the cover 1. The shell 2 and the cover body 1 are of a separable structure, so that the storage is convenient.
The ultraviolet component 3 can emit ultraviolet rays, is arranged in the shell 2, and emits the ultraviolet rays to irradiate the sterilization channel 23 of the shell 2. The uv assembly 3 may be disposed between the filter assembly 4 and the air inlet 21 of the housing 2 to sterilize the air first, thereby preventing bacteria from adhering to the filter assembly 4. In addition, the whole or part of the structure of the housing 2 can be made of a material that is not transparent to ultraviolet rays or coated with a protective layer (not shown) that can prevent ultraviolet rays from penetrating, so as to prevent ultraviolet rays from affecting users.
The filter assembly 4 is a porous structure and is disposed in the housing 2 and covers the second ventilation opening 22 of the housing 2, so that the air entering from the air inlet 21 of the housing 2 must pass through the filter assembly 4 before reaching the cover 1. The filter assembly 4 is mainly used for filtering objects such as viruses, bacteria, body fluids, droplets, aerosols, etc., and the structure thereof is conventional technology and thus will not be described again.
As shown in fig. 4, the uv assembly 3 may be composed of a circuit board 31, a battery 32, a switch 33 and a uv lamp 34, so that the user can turn on or off the uv lamp 34 conveniently. The circuit board 31, the battery 32 and other structures can be arranged on the inner side and the outer side of the shell, and the battery can be replaced conveniently. The switch 33 is located in a position convenient for the user to operate. An ultraviolet lamp 34 is provided in the housing 2 to illuminate the sterilization passage 23 of the housing 2. In addition, the circuit board may further have a charging interface (not shown).
As shown in fig. 5 to 11, the housing 2a may further have an insertion opening 24a communicating with the sterilization passage 23a and connected to a detachable structure 5 a; the attaching and detaching structure 5a includes: a first cover 51a fixed in the sterilization channel 23a of the housing 2a, having a third air vent 511a at the center thereof, the third air vent 511a of the first cover 51a communicating with the second air vent 22a of the housing 2 a; and a second cover 52a detachably engaged with the insertion opening 24a of the housing 2 a; and a tubular bracket 53a, one end of which is fixed on the second cover 52a, the other end of which is clamped with the first cover 51a when the second cover 52a is clamped with the shell 2a (as shown in fig. 7), and the side wall of which is provided with a plurality of ventilation openings 531 a; the filter unit 4a is covered outside the tubular bracket 53a and covers the third air vent 511a of the first cover 51a, so that the air entering from the air inlet 21a of the housing 2a must pass through the filter unit 4a before reaching the cover 1 a. With this structure, the second cover 52a and the tubular bracket 53a can be conveniently taken down, and the filter assembly 4a can be conveniently replaced. In addition, since the filter element 4a has a porous structure, there is a problem that air circulation is blocked to some extent when various objects are filtered, so that the area of the filter element 4a can be increased by adopting the tubular filter element 4a, for example, and the amount of air passing through the filter element 4a can be increased.
In order to surely restrict the flow of air, airtight fitting can be adopted between the first cover 51a and the housing 2a and between the second cover 52a and the housing 2 a. For example, the first cover 51a may be fixed in the housing 2a by coating adhesive in the housing 2a and then placing the first cover 51 a. The second cover 52a and the housing 2a may be engaged or screwed (not shown).
The housing 2a may have a plurality of air inlets 21a for facilitating air circulation. The uv module 3a can achieve sterilization effect mainly by irradiating the sterilization channel 23a of the housing 2a, which can further directly irradiate the air inlet 21a of the housing 2a (as shown in fig. 11), thereby maintaining the environment inside the housing 2 a. Therefore, while the housing 2a may have more than two air inlets 21a, the uv module 3a may also have more than two uv lamps therein for illuminating each air inlet, as will be described below. The uv assembly 3a may include: a power circuit board 35a fixedly arranged in the sterilization channel 23a of the shell 2 a; and a battery 36a detachably connected to the power circuit board 35 a; and a switch 37a connected to the power circuit board 35 a; and an ultraviolet unit 38a detachably connected to the power circuit board 35a, which is composed of a plurality of ultraviolet circuit boards 381a and a plurality of ultraviolet lamps 382 a.
The uv unit 38a is composed of a plurality of uv circuit boards 381a and a plurality of uv lamps 382a, so that the uv circuit boards 381a can be used to carry the uv lamps 382a, and the position of the uv lamps 382a can be conveniently controlled, thereby achieving the effect of irradiating the air inlet of each housing with uv light. In addition, the ultraviolet unit 38a is detachably connected to the power circuit board 35a, so that the production and the manufacture can be facilitated, and the assembly with the power circuit board 35a can be facilitated.
A USB connector 351a may be disposed on the power circuit board 35a, and the battery 36a may be detachably connected to the USB connector 351a of the power circuit board 35a, so as to facilitate replacement of the battery 36 a. In addition, a first space 25a may be provided between the housing 2a and the first cover 51a for accommodating the power circuit board 35 a. The power circuit board 35a and the housing 2a do not have to be air-tight fitted, and if necessary, the power circuit board 35a may be provided with a plurality of vent holes 352a to facilitate air circulation. Moreover, the battery can be arranged on the inner side of the tubular support, so that the space is saved.
As shown in fig. 5 and 11, in order to meet the requirements of different users, the housing 2a may be tubular and longitudinally connected to the cover 1a, such that the second air vent 22a of the housing 2a is located at the top end, the air inlet 21a of the housing 2a is located at the bottom of the sidewall, and the insertion port 24a of the housing 2a is located at the bottom end. When the user wears the cover body 1a and inhales, air enters from the air inlet 21a of the housing 2a, passes through the filter element 4a, the third air outlet 511a of the first cover body 51a, the air inlet 352a of the power circuit board 35a and the second air inlet 22a of the housing 2a in sequence after being irradiated by ultraviolet rays, and then enters the cover body 1a, so that the sterilization and filtration effects can be achieved.
As shown in fig. 12 to 14, in order to meet the requirements of different users, the housing 2b may also be tubular and connected to the cover 1b in a transverse direction, such that the second air vent 22b of the housing 2b is located at the top of the side wall, the air inlet 21b of the housing 2b is located at the bottom of the side wall, and the insertion port 24b of the housing 2b is located at the end. When the user wears the cover body 1b and inhales, air enters from the air inlet 21b of the housing 2b, passes through the filter element 4b, the third air outlet 511b of the first cover body 51b, the air inlet 352b of the power circuit board 35b and the second air inlet 22b of the housing 2b in sequence after being irradiated by ultraviolet rays, and then enters the cover body 1b, so that the sterilization and filtration effects can be achieved.
The above-mentioned embodiments are provided for illustrative purposes only, and should not be construed as limiting the present invention, i.e., all modifications and variations that fall within the scope of the appended claims are intended to be embraced therein.
Claims (6)
1. A mask with ultraviolet sterilization effect is characterized by comprising:
a cover body, which can cover the mouth and nose of a user and is provided with a first vent and a one-way exhaust structure; and
the second vent of the shell is communicated with the first vent of the cover body; and
the ultraviolet component can emit ultraviolet rays and is arranged in the shell, and the ultraviolet rays emitted by the ultraviolet component irradiate the sterilization channel of the shell; and
and the filter component is of a porous structure and is arranged in the shell and covers the second ventilation port of the shell, so that the air entering from the air inlet of the shell can reach the cover body only by passing through the filter component.
2. The mask of claim 1, wherein the shell has an insertion opening communicating with the sterilization channel and is connected to a detachable structure; this dismouting structure includes: the first cover body is fixedly arranged in the sterilization channel of the shell, the center of the first cover body is provided with a third vent hole, and the third vent hole of the first cover body is communicated with the second vent hole of the shell; the second cover body is detachably clamped in the embedding opening of the shell; one end of the tubular support is fixedly arranged on the second cover body, the other end of the tubular support is clamped with the first cover body when the second cover body is clamped on the shell, and the side wall of the tubular support is provided with a plurality of ventilation openings; the filter assembly covers the outer side of the tubular support and covers the third vent hole of the first cover body, so that air entering from the air inlet of the shell can reach the cover body after passing through the filter assembly.
3. The mask with uv sterilizing effect according to claim 2, wherein the uv unit comprises: the power supply circuit board is fixedly arranged in the sterilization channel of the shell; and a battery, which is detachably connected with the power circuit board; and a switch connected with the power circuit board; and the ultraviolet unit is detachably connected with the power supply circuit board and consists of a plurality of ultraviolet circuit boards and a plurality of ultraviolet lamps.
4. The mask with ultraviolet germicidal effect as in claim 3, wherein the battery is disposed inside the tubular frame.
5. The mask with uv sterilization effect according to claim 2, wherein the shell is tubular and longitudinally connected to the mask body; the second vent of the housing is located at the top end, the air inlet of the housing is located at the bottom of the side wall, and the insertion port of the housing is located at the bottom end.
6. The mask with uv sterilizing effect as claimed in claim 2, wherein the shell is tubular and transversely connected to the mask body; the second vent of the housing is located at the top of the sidewall, the inlet of the housing is located at the bottom of the sidewall, and the insertion port of the housing is located at the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010274387.5A CN113508938A (en) | 2020-04-09 | 2020-04-09 | Mask with ultraviolet sterilization effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010274387.5A CN113508938A (en) | 2020-04-09 | 2020-04-09 | Mask with ultraviolet sterilization effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113508938A true CN113508938A (en) | 2021-10-19 |
Family
ID=78061036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010274387.5A Withdrawn CN113508938A (en) | 2020-04-09 | 2020-04-09 | Mask with ultraviolet sterilization effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113508938A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW586427U (en) * | 2003-05-09 | 2004-05-01 | Yun-Yuan Chu | UV automatic sterilizing photo-catalytic mask |
| TW592747B (en) * | 2003-05-22 | 2004-06-21 | Jin-Ping Shiu | Mask |
| TWM255035U (en) * | 2004-02-20 | 2005-01-11 | Yu-Hu Chen | Portable respirator |
| TWM363310U (en) * | 2009-04-24 | 2009-08-21 | shui-yuan Li | Mask with ultraviolet light and photo catalyst sterilization device |
| KR20170099447A (en) * | 2016-02-23 | 2017-09-01 | 주식회사 루미 | Face shield type mask |
| CN209967465U (en) * | 2019-05-15 | 2020-01-21 | 青岛优威迪光电科技有限公司 | Ultraviolet disinfection mask |
| CN212382131U (en) * | 2020-04-09 | 2021-01-22 | 钟昌燕 | Mask with ultraviolet sterilization effect |
-
2020
- 2020-04-09 CN CN202010274387.5A patent/CN113508938A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW586427U (en) * | 2003-05-09 | 2004-05-01 | Yun-Yuan Chu | UV automatic sterilizing photo-catalytic mask |
| TW592747B (en) * | 2003-05-22 | 2004-06-21 | Jin-Ping Shiu | Mask |
| TWM255035U (en) * | 2004-02-20 | 2005-01-11 | Yu-Hu Chen | Portable respirator |
| TWM363310U (en) * | 2009-04-24 | 2009-08-21 | shui-yuan Li | Mask with ultraviolet light and photo catalyst sterilization device |
| KR20170099447A (en) * | 2016-02-23 | 2017-09-01 | 주식회사 루미 | Face shield type mask |
| CN209967465U (en) * | 2019-05-15 | 2020-01-21 | 青岛优威迪光电科技有限公司 | Ultraviolet disinfection mask |
| CN212382131U (en) * | 2020-04-09 | 2021-01-22 | 钟昌燕 | Mask with ultraviolet sterilization effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211019 |
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| WW01 | Invention patent application withdrawn after publication |