CN1103429C - Combustion device - Google Patents
Combustion device Download PDFInfo
- Publication number
- CN1103429C CN1103429C CN96108202A CN96108202A CN1103429C CN 1103429 C CN1103429 C CN 1103429C CN 96108202 A CN96108202 A CN 96108202A CN 96108202 A CN96108202 A CN 96108202A CN 1103429 C CN1103429 C CN 1103429C
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- CN
- China
- Prior art keywords
- mentioned
- circuit
- work
- ignition
- temperature fuse
- 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.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The present invention provides a combustor, wherein a temperature fuse 42 is connected in series electrically to a water flow switch 4 which is turned ON when a water flow is detected and when the temperature fuse 42 burns out by overheating, application of voltage VCC2 is suspended on a regulator 91 even when the water flow switch is turned ON. A stabilization voltage VREG as timer actuation start signal and power for actuation fails to be supplied to a suction timer circuit 6, a holding timer circuit 7 and an igniter timer circuit 51 and suspension to transistors 13 and 14. The combustor is excellent in safety by failure of ignition when a temperature fuse burns out by overheating.
Description
The present invention relates to control the device of burning.
The device of control burning as gas heater, is provided with magnetic valve at it in the path of gas burner supply combustion gas.As the ignition means of gas burner, known produces the igniter of high tension spark discharge just like energising.Above-mentioned magnetic valve and igniter are connected in dc source (as dry cell) by transistor, by connecting (ON) signal to the transistor input above-mentioned magnetic valve and igniter are switched on.
Particularly, in case detect the water flow switch closure of current, then, the maintenance timing circuit and the ignition timing circuit that send the ON signal are connected in transistor, control magnetic valve and igniter energising according to this closure signal (ignition signal).
In order to prevent superheating heat exchanger, at the other temperature fuse that is electrically connected between transistor one magnetic valve that is provided with of heat exchanger.
In above-mentioned gas heater, in case temperature fuse is molten disconnected, no longer includes the maintenance electric current in the magnetic valve and flow through, after the maintenance personal found out that overheated reason is changed temperature fuse, the user just can re-use this gas heater.
Yet even under above-mentioned state, firing circuit still can move and carry out spark discharge, worries that the user can judge by accident to the water heater fault-free to carry out ignition operation time and again.
The object of the present invention is to provide the device of the good control burning of a kind of security of not carrying out the normal ignition action during by overheated and molten disconnected temperature fuse.
For solving above-mentioned problem, the present invention adopts following structure.
(1) device of control of the present invention burning has: be provided in to gas burner and supply with in the fuel gas supply path of combustion gas the magnetic valve that by energising valve body is driven valve; The place, the temperature that are provided in above-mentioned gas burner heating reach the temperature fuse of the above fusing of predetermined temperature; The holding circuit of in the scheduled time of self-ignition index signal input above-mentioned magnetic valve being forced energising; The firing circuit that ignition instruction signal input begins to light a fire action; The safety circuit that the ignition instruction signal input begins to detect combustion flame and during detecting combustion flame above-mentioned magnetic valve switched on.Above-mentioned ignition instruction signal is by the input of said temperature fuse.
(2) have and above-mentioned (1) same structure, the work of above-mentioned ignition instruction signal and above-mentioned holding circuit and above-mentioned safety circuit is shared with electric power.
(3) have: be equipped on the magnetic valve of driving valve in the fuel gas supply path of gas burner supply combustion gas, by the energising valve body; Has heat exchange water route by the heat exchange department of above-mentioned gas burner heating; Detect the just closed water flow switch of contact (contact) when flowing through this heat exchange water route current; Be provided in by the above-mentioned heat exchange department, greater than the temperature fuse of predetermined temperature fusing; Provide the work power line of work by above-mentioned water flow switch and said temperature fuse by above-mentioned battery with electric power; Be connected in the switch element of above-mentioned magnetic valve; Be connected in the ignition timing circuit that sends ignition signal when above-mentioned work provides work with electric power with power line in the given time, and the firing circuit of the action of during the above-mentioned ignition signal of input, lighting a fire; Be connected in above-mentioned work and in the above-mentioned scheduled time, force to send the maintenance timing circuit of connection (ON) signal with power line supply work during with electric power to above-mentioned switch element; Be connected in the safety circuit that above-mentioned work begins to detect combustion flame with power line supply work during with electric power, sends the ON signal to above-mentioned switch element during detecting combustion flame.
The described the present invention of claim 1, its ignition instruction signal is imported each circuit by temperature fuse.Firing circuit begins the igniting action.Holding circuit to the magnetic valve energising, makes magnetic valve keep out the valve state in the given time thus.If gas burner catches fire, when safety circuit detected combustion flame at the fixed time, safety circuit was being kept valve opening solenoid valve state through still continuing after the scheduled time to the magnetic valve energising, and gas burner burns away.
During because of the overtemperature fuse blows, even the output ignition instruction signal can not be input in each circuit yet.
Therefore, firing circuit can not begin the igniting action, and to the magnetic valve energising, magnetic valve is not kept the valve state that closes to holding circuit, and safety circuit does not begin to detect combustion flame, thereby gas burner keeps the fire extinguishing state.
The described the present invention of claim 2, its ignition instruction signal is imported each circuit by temperature fuse.Firing circuit begins the igniting action.Holding circuit is interior at the fixed time to the magnetic valve energising, thus, keeps valve opening solenoid valve state.If gas burner catches fire, when safety circuit detected combustion flame at the fixed time, through after the scheduled time, safety circuit still continued to keep valve opening solenoid valve state to the magnetic valve energising, and gas burner burns away.
During because of the overtemperature fuse blows, even the output ignition instruction signal can not be input in each circuit yet.No work is supplied with electric power in holding circuit and the safety circuit.
Therefore, firing circuit does not begin the igniting action, and to the magnetic valve energising, magnetic valve is not kept the valve state that closes to holding circuit, and safety circuit does not begin to detect combustion flame, and gas burner keeps the fire extinguishing state.
The described the present invention of claim 3, in its heat exchange water route in case there is water to flow, the closing of contact of water flow switch then, battery by water flow switch and temperature fuse to work with power line supply work electric power.
The work that is connected to is sent ignition signal at the fixed time with the ignition timing circuit of power line, the firing circuit action of lighting a fire during ignition signal input.
The work that is connected to is sent the ON signal with the maintenance timing circuit of power line is interior at the fixed time to switch element, and switch element is connected, and magnetic valve is kept out the valve state.
The work that is connected to begins to send the ON signal to switch element when detecting combustion flame with the safety circuit of power line at the fixed time, through after the scheduled time, still keeps valve opening solenoid valve state, and gas burner burns away.
Under overtemperature fuse blows situation, even water flows into the heat exchange water route water flow switch closing of contact, also not to working with power line supply work electric power.
Therefore, work is not supplied with switch element with electric power, holding circuit, and safety circuit.Ignition timing circuit is not sent ignition signal, and the firing circuit action of not lighting a fire keeps timing circuit not send the ON signal to switch element, and safety circuit does not detect combustion flame, and magnetic valve is kept the valve state that closes, and gas burner keeps the fire extinguishing state.
The present invention according to claim 1, because ignition instruction signal is imported holding circuit by temperature fuse, therefore firing circuit and safety circuit be not even can import each circuit because of the overheated output ignition instruction signal that makes under the temperature fuse fusing situation yet.
Therefore, under overtemperature fuse blows situation, even the user carries out ignition operation, firing circuit also misfires, and to the magnetic valve energising, safety circuit does not detect combustion flame to holding circuit, magnetic valve is kept the valve state that closes, and gas burner keeps the fire extinguishing state.
That is to say, under the temperature fuse fusing situation, even user's ignition operation does not have the igniting action yet.Therefore, not only improved security, the user can judge that there is fault in the device of control burning, need repair really simultaneously.
The present invention according to claim 2, by temperature fuse ignition instruction signal is imported holding circuit, firing circuit, and safety circuit, so make under the temperature fuse fusing situation because of overheated, even the output ignition instruction signal can not imported each circuit yet.And do not work in holding circuit and the safety circuit yet and supply with electric power.
Therefore, make under the temperature fuse fusing situation because of overheated, even the user carries out ignition operation, firing circuit does not begin the igniting action yet, and the holding circuit action stops, and magnetic valve does not constitute energising, safety circuit also quits work, do not detect combustion flame, magnetic valve is kept the valve state that closes, and gas burner keeps the fire extinguishing state.
Also promptly, under temperature fuse fusing situation, even the user carries out ignition operation, the action of also can not lighting a fire.Therefore, improved security, the user can judge that there is fault in the device of control burning, need repair really simultaneously.
The present invention according to claim 3, temperature fuse and water flow switch in series are electrically connected, and battery will be worked with electric power supply work power line by water flow switch and temperature fuse.Then, switch element, ignition timing circuit keeps timing circuit, and the safety circuit work of being connected in power line.
Thereby, making under the temperature fuse fusing situation because of overheated, work can not add to the work power line with electric power.
At this moment, even current make the water flow switch closing of contact through the heat exchange water route, work can not supplied with switch element with electric power yet, ignition timing circuit, keep timing circuit, safety circuit and can not make their work, firing circuit does not carry out ignition operation (ignition signal can not imported from ignition timing circuit).
Also promptly, under temperature fuse fusing situation, move the water to flow into the heat exchange water route, also do not have the igniting action even the user carries out ignition operation.Therefore, improved security, the user judges that the device of control burning breaks down, and need repair really simultaneously.
Description of drawings.
Fig. 1 is the outside drawing of one embodiment of the invention combustion gas instantaneous heat hydrophone;
Fig. 2 is the structure chart of this combustion gas instantaneous heat hydrophone;
Fig. 3 is the electric hookup of this combustion gas instantaneous heat hydrophone;
Fig. 4 is the flow chart of this combustion gas instantaneous heat hydrophone action of expression;
Fig. 5 is the flow chart of this combustion gas instantaneous heat hydrophone action of expression;
Fig. 6 is the sequential chart of this combustion gas instantaneous heat hydrophone action of expression;
Below, according to Fig. 1-Fig. 6 one embodiment of the invention (corresponding to claim 1-3) is described.
As shown in the figure, combustion gas instantaneous heat hydrophone A has: have sucking coil 11 and hold-in winding 12 and be provided in to gas burner 2 and supply with electromagnetic valve 1 in the gas pipeline 21 of combustion gas; Transistor 13,14; Heat exchange water route 3 with heat exchanger 31; Detect the water flow switch 4 of current contact (contact) 41 closures; Detect overheated and temperature fuse 42 fusing; Igniter timing circuit 51 and igniter drive circuit 52; Send the attraction timing circuit 6 of connection (ON) signal 61 during contact 41 closures at the 1st timing (0.4 second); Send the maintenance timing circuit 7 of connection signal 71 during contact 41 closures at the 2nd timing (5.5 seconds); Begin to detect combustion flame during contact 41 closures, during detecting combustion flame, send the testing circuit 8 that catches fire of ON signal 81 to transistor 14.
91 is voltage adjuster, contact 41 1 closures, voltage V
Cc2(3V) add to " worker N " terminal 910, on " OUT " terminal 911, produce burning voltage V
REG(1.5V).
92 is dry cell, in the present embodiment, is in series by 2 of the manganese dry cells of single 1.5V, has voltage V
Cc1Electromotive force (3V).
9 is electronic unit, in be provided with each circuit.
Setting the temperature fuse 42 of fusing more than 152 ℃ on heat exchanger 31 combustion barrel nearby.This temperature fuse 42, the one end is electrically connected in water flow switch 4, and the other end is electrically connected in " IN " terminal 910.
Hydraulic pressure automatic gas valve 212 is connected in water control valve 323 through interlock rod 43, promptly drives valve in case water flows in the heat exchange water route 3.Capacity adjustment device 213 is connected in capacity adjustment knob 214, and the gas quantity corresponding to the screw-in amount of capacity adjustment knob 214 is passed through.
Heat exchange water route 3 is by being connected with feed pipe 32 in turn, heat exchanger 31, hot-water outlet pipe 33 and constituting.
Igniter timing circuit 51 is given igniter drive circuit 52 with actuating signal 511 during contact 41 closures are given 5.5 seconds that establish the beginning by cable.
Igniter drive circuit 52 produces the spark discharge high voltage during input action signal 511, and will light a fire to impose on high voltage and be provided near the ignitor 521 of gas burner 2.Igniter drive circuit 52, to expend electric current more with voltage V because of it
Cc1As work electric power.
The testing circuit 8 that catches fire is that a kind of alternating voltage (about 100V) that flame current is detected usefulness imposes on and is provided in gas burner 2 other flame rod 80 and carries out the circuit that flame current detects, when detecting flame current (detection is caught fire), give transistor 14 with ON signal 81.And with voltage V
Cc2As work electric power.
Attract timing circuit 6 to constitute, when supplying with burning voltage V by comparator, CR charging circuit etc.
REGWhen moving commencing signal, ON signal 61 is added to transistor 13 in first timing (0.4 second) as timing.
Transistor 13 is provided between sucking coil 11 and the dry cell 92, and conducting during 61 inputs of ON signal attracts electric current to flow into sucking coil 11.
Keep timing circuit 7 by comparator, formations such as CR charging circuit are when with burning voltage V
REGWhen moving the commencing signal input, give transistor 14 with ON signal 71 in second timing (5.5 seconds) as timing.
Transistor 14 is provided in 911 of hold-in winding 12 and " OUT " terminals, and conducting during ON signal 71 or 81 inputs of ON signal keeps electric current to flow into hold-in winding 12, makes electromagnetic valve 1 keep out valve.
Below, according to Fig. 4, the action of the flow chart of Fig. 5 and the sequential chart of Fig. 6 explanation combustion gas instantaneous heat hydrophone A.
[utensil is brought into use (with reference to Fig. 4)]
The user opens hot water bolt (step 1), water flow switch 4 closures (step 2), voltage V
Cc2Add to " IN " end 910 of voltage adjuster 91, " OUT " end 911 produces burning voltage V
REG
Burning voltage V
REGThe power supply beginning, step 3 is carried out following action.
Igniter timing circuit 51 adds to igniter drive circuit 52 with actuating signal 511, circuit 52 adds to ignitor 521 with high voltage, the beginning spark discharge, attract timing circuit 6 that ON signal 61 is added to transistor 13, transistor 13 conductings make and attract electric current to flow into sucking coil 11, electromagnetic valve 1 manual labour (driving valve).Keep timing circuit 7 to give transistor 14 with ON signal 71, transistor 14 conductings make to keep electric current to flow into hold-in winding 12.
In step 4, hydraulic pressure automatic gas valve 212 is driven valve, and gas burner 2 catches fire.
Begin through 0.4 second (YES the step 5) from water flow switch 4 closures, attract timing circuit 6 no longer ON signal 61 to be added to transistor 13, transistor 13 ends, and attracts electric current no longer to flow into sucking coil 11 (step 6).
Begin through 5.5 seconds (YES the step 7) from water flow switch 4 closures, keep timing circuit 7 no longer ON signal 71 to be added to transistor 14, igniter timing circuit 51 is no longer given igniter drive circuit 52 with actuating signal 511, stops spark discharge (step 8).
Shown in Fig. 6 (a), just often, the testing circuit 8 that catches fire has detected flame current, gives transistor 14 (YES in the step 9) with ON signal 81, and electromagnetic valve 1 continues to keep opening valve.
Voltage V
Cc1More than 1.8V (YES in the step 10),, provide hot water before then stopping using to utensil if flame current detects always.
When the flame detection electric current is (not missing of ignition; Fig. 6 (b) or do not detect flame current and (do not have fire; Fig. 6 (c)) time, or voltage V
Cc1(voltage is low during less than 1.8V; Fig. 6 (d)), indicator lamp 93 is bright continuously, and the testing circuit 8 that catches fire stops to send ON signal 81 (step 11) to transistor 14.Therefore, electromagnetic valve 1 closes valve (closing).
The user realizes and closes heat water valve unusually (step 12), (step 13), water flow switch 4 is closed, simultaneously the indicator lamp 93 (step 14) of turning off the light because of no current are closed hydraulic pressure automatic gas valve 212.
[utensil is stopped using (with reference to Fig. 5)]
In order to stop using, the user closes hot-water switch (hot water bolt, hot water supply bolt) (step S1), current stop, and hydraulic pressure automatic gas valve 212 cuts out (step S2), gas burner 2 fire extinguishings (step S3), water flow switch 4 is closed (step S4), and electromagnetic valve 1 closes valve (step S5).
[during temperature fuse 42 fusing]
Shown in (e) among Fig. 6, the user opens hot-water switch, and water flows, water flow switch 4 closures.Because temperature fuse 42 fusing, so there is not voltage V on " IN " of voltage adjuster 91 end 910
Cc2, " OUT " end 911 is not exported burning voltage V yet
REG
Therefore, there is not burning voltage V
REGAdd to transistor 14, attract timing circuit 6, keep timing circuit 7, igniter timing circuit 51 does not have voltage V yet
Cc2The supply testing circuit 8 that catches fire.
Like this, attract timing circuit 6 not send ON signal 61 to transistor 13, igniter timing circuit 51 does not send ignition signal 511, keep timing circuit 7 not send ON signal 71 to transistor 14, the testing circuit 8 that catches fire does not begin to detect combustion flame, electromagnetic valve 1 is kept the valve state that closes, and gas burner 2 keeps the fire extinguishing state.
Combustion gas instantaneous heat hydrophone A is because of having following structure, action, so (1)-(4) advantage is arranged.
When temperature fuse 42 is in fusing,, make contact 41 closures of water flow switch 4, also do not have burning voltage V even the user carries out ignition operation (open hot-water switch and make current through heat exchange water route 3)
REGSupply with transistor 14, attract timing circuit 6, keep timing circuit 7, and igniter timing circuit 51, and do not have voltage V yet
Cc2Add to the testing circuit 8 that catches fire.
When (1) temperature fuse 42 fuses,, can not discharge coal gas, so be safe even user's operation igniting does not have the attraction electric current yet.
(2) user's operation igniting when temperature fuse 42 fusing can not produce spark discharge (creak and utter), and indicator lamp 93 does not work, and expression work is undesired, and the user distinguishes that easily water heater has fault.
(3) in case temperature fuse 42 fusing, the user promptly distinguishes fault is arranged and to end to use, so can prevent battery consumption and request repairing rapidly.
(4) since the work of igniter drive circuit 52 or transistor 13 with power supply (flowing through big electric current) without temperature fuse 42 or water flow switch 4, melt or the contact loose contacts so can prevent contact 41, and prevent because of current fusing temperature fuse 42 greatly.
In the above-described embodiments, magnetic valve uses sucking coil and hold-in winding respectively, but an also available coil double as attracts and keeps.Have again, in the above-described embodiments, though the device of control burning is example with the water heater, the also device of other control burning such as available fans heater.
Claims (3)
1. device of controlling burning has:
Be arranged on the magnetic valve of in the fuel gas supply path of gas burner supply combustion gas, opening valve body by energising;
Be arranged on the heating of above-mentioned gas burner the place, reach the temperature fuse of the above fusing of predetermined temperature;
The holding circuit of forcing above-mentioned magnetic valve energising during at the fixed time according to ignition instruction signal;
The firing circuit that the input ignition instruction signal begins to light a fire action;
The input ignition instruction signal begins to detect combustion flame, makes the safety circuit of above-mentioned magnetic valve energising during detecting combustion flame,
It is characterized in that,
Above-mentioned ignition instruction signal is imported through the said temperature fuse.
2. the device of control burning as claimed in claim 1 is characterized in that, above-mentioned holding circuit of above-mentioned ignition instruction signal double as and above-mentioned safety circuit action electric power.
3. a device of controlling burning is characterized in that, has:
Be configured in the magnetic valve of in the fuel gas supply path of gas burner supply combustion gas, opening valve body through energising;
Has heat exchange water route through the heat exchange department of above-mentioned gas burner heating;
Detect the water flow switch that makes junction closure when flowing through this heat exchange water route current;
Be configured near the above-mentioned heat exchange department, temperature reaches the temperature fuse that predetermined value fuses when above;
The switch element of the work that is connected between power line and the above-mentioned magnetic valve, this work provides work electric power by battery through above-mentioned water flow switch and said temperature fuse with power line;
Be connected in above-mentioned work and send the ignition timing circuit of ignition signal during with electric power at the fixed time when supply work with power line, and the firing circuit of the action of lighting a fire during the above-mentioned ignition signal of input;
Be connected in above-mentioned work power line, when supply work forces connection signal is sent to the maintenance timing circuit of above-mentioned switch element during with electric power at above-mentioned predetermined time period;
Be connected in above-mentioned work power line,, during detecting combustion flame, send the safety circuit of connection signal to above-mentioned switch element when supply work begins to detect combustion flame during with electric power.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP195274/95 | 1995-07-31 | ||
| JP195274/1995 | 1995-07-31 | ||
| JP07195274A JP3088271B2 (en) | 1995-07-31 | 1995-07-31 | Combustion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1160162A CN1160162A (en) | 1997-09-24 |
| CN1103429C true CN1103429C (en) | 2003-03-19 |
Family
ID=16338440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96108202A Expired - Fee Related CN1103429C (en) | 1995-07-31 | 1996-06-19 | Combustion device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3088271B2 (en) |
| KR (1) | KR0181630B1 (en) |
| CN (1) | CN1103429C (en) |
| BR (1) | BR9601981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413676B (en) * | 2007-10-18 | 2010-11-03 | 比亚迪股份有限公司 | Test device of igniting tube |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458614C (en) * | 2006-04-06 | 2009-02-04 | 台湾樱花股份有限公司 | Electromagnetic valve control circuit and electromagnetic valve control method for water heater |
| CN111023142B (en) * | 2020-01-10 | 2020-11-24 | 新沂市锡沂高新材料产业技术研究院有限公司 | Fuel supply device capable of changing supply quantity according to temperature |
-
1995
- 1995-07-31 JP JP07195274A patent/JP3088271B2/en not_active Expired - Fee Related
-
1996
- 1996-04-23 KR KR1019960012445A patent/KR0181630B1/en not_active IP Right Cessation
- 1996-06-19 CN CN96108202A patent/CN1103429C/en not_active Expired - Fee Related
- 1996-07-19 BR BR9601981A patent/BR9601981A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413676B (en) * | 2007-10-18 | 2010-11-03 | 比亚迪股份有限公司 | Test device of igniting tube |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9601981A (en) | 1998-10-06 |
| CN1160162A (en) | 1997-09-24 |
| JP3088271B2 (en) | 2000-09-18 |
| KR0181630B1 (en) | 1999-03-20 |
| JPH0942655A (en) | 1997-02-14 |
| KR970007178A (en) | 1997-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030319 Termination date: 20130619 |