CN101412140A - Zero-voltage soft switch topological main circuit of arc welding inverter - Google Patents
Zero-voltage soft switch topological main circuit of arc welding inverter Download PDFInfo
- Publication number
- CN101412140A CN101412140A CNA2008102361494A CN200810236149A CN101412140A CN 101412140 A CN101412140 A CN 101412140A CN A2008102361494 A CNA2008102361494 A CN A2008102361494A CN 200810236149 A CN200810236149 A CN 200810236149A CN 101412140 A CN101412140 A CN 101412140A
- Authority
- CN
- China
- Prior art keywords
- frequency transformer
- coil
- high frequency
- electronic switch
- circuit
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000010363 phase shift Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Inverter Devices (AREA)
Abstract
本发明公开了一种零电压软开关弧焊逆变器拓扑主电路，包括由大功率绝缘栅双极型晶体管构成的超前臂和滞后臂、晶体管反向并联二极管、晶体管并联电容组成的全桥移相谐振式电路且通过谐振电感和漏感接入高频变压器的原边，高频变压器的副边线圈输出逆变电源，在谐振电感前端串联电流采样线圈，辅助电感串联一个电子开关后连接高频变压器的线圈；该电子开关连接控制电路且通过电流采样线圈采样高频变压器的原边电流。本发明由控制电路实现电子开关的开关，在空载、轻载下开通电子开关可提高变压器原边电流值，重载时关断电子开关可减小电路环流，增大功率因数，防止磁芯发热严重导致元器件损坏，实现所有负载范围的主功率器件零电压开关。
The invention discloses a zero-voltage soft-switching arc welding inverter topology main circuit, which includes a full bridge consisting of a leading arm and a lagging arm composed of a high-power insulated gate bipolar transistor, a transistor antiparallel diode, and a transistor parallel capacitor The phase-shifting resonant circuit is connected to the primary side of the high-frequency transformer through the resonant inductance and leakage inductance. The secondary coil of the high-frequency transformer outputs the inverter power supply. The current sampling coil is connected in series at the front end of the resonant inductance, and the auxiliary inductance is connected in series with an electronic switch. The coil of the high-frequency transformer; the electronic switch is connected to the control circuit and samples the primary current of the high-frequency transformer through the current sampling coil. In the present invention, the switch of the electronic switch is realized by the control circuit. Turning on the electronic switch under no-load or light load can increase the current value of the primary side of the transformer, and turning off the electronic switch under heavy load can reduce the circuit circulation, increase the power factor, and prevent the Severe heating causes damage to components, and realizes zero-voltage switching of main power devices in all load ranges.
Description
Technical field
The present invention relates to a kind of welding equipment that is used for weld metal, especially a kind of topological main circuit of arc welder.
Background technology
In arc welding inverter, adopt full-bridge type Zero-voltage soft switch (FB-ZVS) topological main circuit and PWM mode (PWM) to realize the ZVT of high-power switch tube at present usually.As shown in Figure 1, Q1 and Q2 be leading Q3 and phase place of Q4 respectively, and the brachium pontis that claims Q1 and Q2 to form is leading arm, and the brachium pontis that Q3 and Q4 form is a lagging leg.Two power devices of each brachium pontis become 180 ° of complementary conductings, a Dead Time is arranged between them, promptly two manage time of not conducting, the angle of flow of two brachium pontis differs a phase place, it is phase shifting angle, realize pulsewidth modulation by regulating phase shifting angle, thereby reach the purpose of regulating output voltage or electric current.Yet the ZVT condition of the high-power switch tube of lagging leg is influenced by load and input voltage, when welding machine zero load and welding machine underloading (power output), the electric current on the former limit of intermediate-frequency transformer is very little, the phase shift arm is difficult to realize ZVT, problems such as circulation energy is big, duty-cycle loss can occur, make problems such as switching loss and switching noise increasing.
As shown in Figure 2, the patent No. is 200410036435, name be called when realizing welding machine zero load, underloading " inverter type welder with soft switch device " patent disclosure increase an auxiliary induction La at the transformer secondary, produce electric current at La during work, this electric current increases the transformer primary current, thereby expanded the loading range of realizing ZVT, realized ZVT.But the defective of this patent is:
1, when big electric current, can increase circuit circulation, thereby increase the conduction loss of converter.
Though 2, pure inductance consumed energy not can increase reactive power, lower power factor.
3, Shi Ji inductance is owing to all exist line resistance, thereby also can consume active power.
4, in the circuit working process, the inductance core loss is very big, and heating is serious, often damages.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of and under unloaded, underloading and fully loaded transportation condition, can both make high-power switch tube realize the topological main circuit of arc welding inverter of soft switch, can solve the problem that auxiliary induction increases circuit circulation, lowers power factor and often damage when big electric current.
The present invention adopts technical scheme to be: comprise that by high-power insulated gate bipolar transistor be the leading arm that device for power switching constitutes, high-power insulated gate bipolar transistor is the lagging leg that device for power switching constitutes, transistorized reverse parallel connection diode, the full-bridge phase-shifting resonance formula circuit that the transistor shunt capacitance is formed, this full-bridge phase-shifting resonance formula circuit inserts the primary coil of high frequency transformer by resonant inductance and leakage inductance, the secondary coil output inverter of high frequency transformer, at described resonant inductance front end series current sampling coil, connect the coil of high frequency transformer behind electronic switch of auxiliary induction series connection; This electronic switch connects control circuit and passes through the primary current of current sample coil sampling high frequency transformer.
The present invention is realized the switch of electronic switch by control circuit.Under the state of zero load, underloading, open electronic switch, can improve transformer primary current value, make the phase shift arm realize ZVT like this, realize comprising the main power device ZVT of all unloaded loading ranges; And when heavy duty, just turn-off electronic switch, and reduce circuit circulation, increase power factor, prevent that the magnetic core heating from seriously causing components and parts to damage.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is a background technology circuit connection diagram of the present invention;
Fig. 2 is a background technology circuit connection diagram of the present invention;
Fig. 3 is the circuit connection diagram of the embodiment of the invention 1;
Fig. 4 is the circuit connection diagram of the embodiment of the invention 2;
Fig. 5 is the circuit connection diagram of the embodiment of the invention 3.
The specific embodiment
Shown in Fig. 3～5, the topological main circuit of the Zero-voltage soft switch arc welding inverter of satisfied simultaneously heavy duty provided by the invention and zero load, underloading comprises that mainly high-power insulated gate bipolar transistor Q1～Q4 is a device for power switching, Q
1And Q
2Turn-offed before Q3 and Q3 respectively, promptly Q1 and Q2 are the fixed lead arm, and Q3 and Q4 are the phase shift lagging leg; Diode D1～D4 is respectively the diode of the reverse parallel connection of transistor Q1～Q4, and capacitor C 1～C4 is respectively parasitic capacitance and the corresponding external resonant capacitance sum of transistor Q1～Q4.Above-mentioned device constitutes full-bridge phase-shifting resonance formula circuit of the present invention, this full-bridge phase-shifting resonance formula circuit leakage inductance L1k of high frequency transformer T primary current sampling coil SE, the resonant inductance Lr by series connection and high frequency transformer T successively inserts the primary coil N1 of high frequency transformer T, the secondary coil N2 output inverter of high frequency transformer T.Diode D5 and D6 are the output commutation diodes that inserts secondary coil N2, and Lf is an output inductor.
The coil of high frequency transformer T will be connected behind electronic switch S1 of an auxiliary induction La series connection; The coil of this high frequency transformer T can be that former limit also can be the ancillary coil of a parallel connection of secondary increase during concrete enforcement, does not perhaps increase ancillary coil and directly connects existing secondary coil N2.Electronic switch S1 connects control circuit and passes through the primary current of current sample coil SE sampling high frequency transformer T.
Below illustrate that by three embodiment auxiliary induction La of the present invention and electronic switch S1 connect three kinds of different circuit connecting modes of the coil of high frequency transformer T.
As shown in Figure 3, full-bridge phase-shifting resonance formula circuit of the present invention is with above-mentioned circuit.At the secondary of described high frequency transformer T ancillary coil N3 in parallel, ancillary coil N3 connects described auxiliary induction La, the auxiliary induction La described electronic switch S1 that connects, this electronic switch S1 connects control circuit and passes through the primary current of current sample coil SE sampling high frequency transformer T, realize that the present invention turn-offs when heavy duty, open-minded under zero load, the light condition.
Embodiment 2
As shown in Figure 4, full-bridge phase-shifting resonance formula circuit of the present invention is with above-mentioned circuit.At the former limit of described high frequency transformer T ancillary coil N3 in parallel, ancillary coil N3 connects described auxiliary induction La, the auxiliary induction La described electronic switch S1 that connects, this electronic switch S1 connects control circuit and passes through the primary current of current sample coil SE sampling high frequency transformer T, realize that the present invention turn-offs when heavy duty, open-minded under zero load, the light condition.
Embodiment 3
As shown in Figure 5, full-bridge phase-shifting resonance formula circuit of the present invention is with above-mentioned circuit.Directly described auxiliary induction La is connected and connect the secondary coil N2 of described high frequency transformer T behind the described electronic switch S1.This electronic switch S1 connects control circuit and passes through the primary current of current sample coil SE sampling high frequency transformer T, realizes that the present invention turn-offs when heavy duty, and is open-minded under zero load, the light condition.
Claims (4)
1, a kind of zero-voltage soft switch topological main circuit of arc welding inverter, comprise by high-power insulated gate bipolar transistor (the leading arm that Q1～Q2) constitutes for device for power switching, high-power insulated gate bipolar transistor (the lagging leg that Q3～Q4) constitutes for device for power switching, transistor (the reverse parallel connection diode of Q1～Q4) (D1～D4), transistor (the shunt capacitance of Q1～Q4) (the full-bridge phase-shifting resonance formula circuit of C1～C4) form, this full-bridge phase-shifting resonance formula circuit inserts the primary coil (N1) of high frequency transformer (T) by resonant inductance (Lr) and leakage inductance (L1k), secondary coil (N2) the output inverter of high frequency transformer (T), it is characterized in that: at described resonant inductance (Lr) front end series current sampling coil (SE), auxiliary induction (La) electronic switch of series connection (S1) back connects the coil of high frequency transformer (T); This electronic switch (S1) connects control circuit and passes through the primary current of current sample coil (SE) sampling high frequency transformer (T).
2, zero-voltage soft switch topological main circuit of arc welding inverter according to claim 1, it is characterized in that: described auxiliary induction (La) electronic switch of series connection (S1) back connects the ancillary coil (N3) of high frequency transformer (T), and this ancillary coil (N3) is connected in parallel on the secondary of high frequency transformer (T).
3, zero-voltage soft switch topological main circuit of arc welding inverter according to claim 1, it is characterized in that: described auxiliary induction (La) electronic switch of series connection (S1) back connects the ancillary coil (N3) of high frequency transformer (T), and this ancillary coil (N3) is connected in parallel on the former limit of high frequency transformer (T).
4, zero-voltage soft switch topological main circuit of arc welding inverter according to claim 1 is characterized in that: described auxiliary induction (La) electronic switch of series connection (S1) back connects the secondary coil (N2) of high frequency transformer (T).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102361494A CN101412140B (en) | 2008-11-17 | 2008-11-17 | Zero-voltage soft-switching arc welding inverter topology main circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102361494A CN101412140B (en) | 2008-11-17 | 2008-11-17 | Zero-voltage soft-switching arc welding inverter topology main circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101412140A true CN101412140A (en) | 2009-04-22 |
| CN101412140B CN101412140B (en) | 2011-06-01 |
Family
ID=40592996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102361494A Expired - Fee Related CN101412140B (en) | 2008-11-17 | 2008-11-17 | Zero-voltage soft-switching arc welding inverter topology main circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101412140B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8680431B2 (en) | 2010-11-15 | 2014-03-25 | Lincoln Global, Inc. | Device and method to control a power source |
| CN105071671A (en) * | 2015-08-05 | 2015-11-18 | 东南大学 | Phase-shifted full-bridge converter for suppressing magnetic flux unbalance of high-frequency transformer |
| CN104333229B (en) * | 2014-11-11 | 2017-02-15 | 东南大学 | Phase shift full bridge switching converter |
| CN108667300A (en) * | 2017-05-17 | 2018-10-16 | 湖南工程学院 | A LLC resonant transformer with variable magnetizing inductance |
| CN109546861A (en) * | 2018-11-26 | 2019-03-29 | 湖南工程学院 | A kind of method of LLC cavity voltage conversion ratio dynamic regulation |
| CN109831112A (en) * | 2019-03-28 | 2019-05-31 | 苏州大学 | High-frequency and high-voltage low temperature plasma generating system |
| CN110190751A (en) * | 2019-05-17 | 2019-08-30 | 中南大学 | A constant gain bidirectional DC-DC resonant converter and its control method |
| CN110829849A (en) * | 2019-11-08 | 2020-02-21 | 济宁学院 | A frequency modulation topology no-load control circuit and its control method |
| CN111098009A (en) * | 2019-12-30 | 2020-05-05 | 上海沪工焊接集团股份有限公司 | Novel arc voltage sampling method and circuit of inverter type plasma cutting machine |
| CN113451973A (en) * | 2021-08-09 | 2021-09-28 | 河南卫华重型机械股份有限公司 | Integrated trolley line alternating-current ice melting controller |
| CN114701373A (en) * | 2022-06-07 | 2022-07-05 | 合肥有感科技有限责任公司 | Wireless charging control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866491B1 (en) * | 2004-02-12 | 2006-06-02 | Air Liquide | SIMULLY SWITCHING RESONANT INVERTER, VOLTAGE CONVERTER AND WELDING STATION USING THE SAME |
| CN200945541Y (en) * | 2005-10-28 | 2007-09-12 | 江苏科技大学 | Full-bridge zero-voltage zero-current soft-switching arc welding inverter |
| CN201039010Y (en) * | 2007-03-30 | 2008-03-19 | 江苏科技大学 | Full-bridge phase shift zero-voltage soft switch reverse conversion arc welding power |
| CN100493802C (en) * | 2007-07-27 | 2009-06-03 | 北京工业大学 | A Control System of Inverter Arc Welding Power Supply |
| CN100589913C (en) * | 2008-05-09 | 2010-02-17 | 北京工业大学 | A main power system of high frequency inverter arc welding power supply |
-
2008
- 2008-11-17 CN CN2008102361494A patent/CN101412140B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8680431B2 (en) | 2010-11-15 | 2014-03-25 | Lincoln Global, Inc. | Device and method to control a power source |
| CN104333229B (en) * | 2014-11-11 | 2017-02-15 | 东南大学 | Phase shift full bridge switching converter |
| CN105071671A (en) * | 2015-08-05 | 2015-11-18 | 东南大学 | Phase-shifted full-bridge converter for suppressing magnetic flux unbalance of high-frequency transformer |
| CN108667300B (en) * | 2017-05-17 | 2020-06-30 | 湖南工程学院 | A kind of magnetizing inductance variable LLC resonant transformer |
| CN108667300A (en) * | 2017-05-17 | 2018-10-16 | 湖南工程学院 | A LLC resonant transformer with variable magnetizing inductance |
| CN109546861A (en) * | 2018-11-26 | 2019-03-29 | 湖南工程学院 | A kind of method of LLC cavity voltage conversion ratio dynamic regulation |
| CN109546861B (en) * | 2018-11-26 | 2021-08-31 | 湖南工程学院 | A method for dynamic adjustment of voltage slew rate of LLC resonant cavity |
| CN109831112A (en) * | 2019-03-28 | 2019-05-31 | 苏州大学 | High-frequency and high-voltage low temperature plasma generating system |
| CN110190751A (en) * | 2019-05-17 | 2019-08-30 | 中南大学 | A constant gain bidirectional DC-DC resonant converter and its control method |
| CN110190751B (en) * | 2019-05-17 | 2020-06-30 | 中南大学 | A constant gain bidirectional DC-DC resonant converter and its control method |
| CN110829849A (en) * | 2019-11-08 | 2020-02-21 | 济宁学院 | A frequency modulation topology no-load control circuit and its control method |
| CN111098009A (en) * | 2019-12-30 | 2020-05-05 | 上海沪工焊接集团股份有限公司 | Novel arc voltage sampling method and circuit of inverter type plasma cutting machine |
| CN113451973A (en) * | 2021-08-09 | 2021-09-28 | 河南卫华重型机械股份有限公司 | Integrated trolley line alternating-current ice melting controller |
| CN114701373A (en) * | 2022-06-07 | 2022-07-05 | 合肥有感科技有限责任公司 | Wireless charging control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101412140B (en) | 2011-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101412140A (en) | Zero-voltage soft switch topological main circuit of arc welding inverter | |
| CN111490683B (en) | Trajectory control method for double-transformer series resonance double-active bridge DC-DC converter topology | |
| Zengin et al. | A novel current modulation method to eliminate low-frequency harmonics in single-stage dual active bridge AC–DC converter | |
| CN103312171B (en) | Isolated soft switching double tube positive exciting resonance DC/DC circuit | |
| CN105896986B (en) | A kind of controlled resonant converter and its control method | |
| CN100405723C (en) | ZVS PWM combined three-level DC converter | |
| CN110719035B (en) | Topology of a single-stage DAB-LLC hybrid bidirectional DC-DC converter | |
| CN201490890U (en) | A converter that can work in phase-shifted resonant and PWM modes | |
| CN106026645A (en) | Bidirectional resonant converter and control method thereof | |
| CN102231600A (en) | Novel full-bridge soft switch circuit applied to arc welding inverter power supply | |
| CN114094836A (en) | Bidirectional half-bridge LLC resonant converter circuit structure based on transformer secondary winding grouping current sharing and pulse width modulation method | |
| CN116365888A (en) | A Wide Voltage Range Parallel Converter System | |
| CN103208927A (en) | Disconnecting soft switching high-boost direct-current converter and control method thereof | |
| CN101829834B (en) | Full-bridge inverting and single end forward inverting switching type arc welding power supply and control method thereof | |
| Jeon et al. | A primary-side-assisted zero-voltage and zero-current switching three-level DC-DC converter with phase-shift control | |
| CN110649802B (en) | Correction method of a single-stage resonant AC-DC power factor correction conversion device | |
| CN103296896B (en) | A kind of soft switch isolation type boost direct current converter and control method thereof | |
| EP3905502A1 (en) | Full-bridge circuit and full-bridge converter | |
| Lokesha et al. | LLC resonant converter design and development | |
| CN101202507A (en) | New type phase shifting full bridge soft switch converter | |
| CN102223086B (en) | Generalized active soft-switching inversion type welding and cutting power circuit | |
| CN112636605B (en) | A DC conversion circuit and its mode switching control method in a wide voltage range | |
| CN110266191A (en) | A soft-switching bidirectional series resonant converter and its constant gain control method | |
| Yazdani et al. | Accurate analysis of a single-phase dual active bridge converter for ZVS and deadband conditions | |
| CN201039010Y (en) | Full-bridge phase shift zero-voltage soft switch reverse conversion arc welding power |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chengdu Expert Welding Equipment Co., Ltd. Assignor: Jiangsu University of Science and Technology Contract record no.: 2011510000303 Denomination of invention: Zero-voltage soft switch topological main circuit of arc welding inverter Granted publication date: 20110601 License type: Exclusive License Open date: 20090422 Record date: 20110928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20161117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |