CN2925001Y - High-performance electronic ballast for controlling electromagnetic interference - Google Patents
High-performance electronic ballast for controlling electromagnetic interference Download PDFInfo
- Publication number
- CN2925001Y CN2925001Y CN 200620101883 CN200620101883U CN2925001Y CN 2925001 Y CN2925001 Y CN 2925001Y CN 200620101883 CN200620101883 CN 200620101883 CN 200620101883 U CN200620101883 U CN 200620101883U CN 2925001 Y CN2925001 Y CN 2925001Y
- Authority
- CN
- China
- Prior art keywords
- bridge
- circuit
- ballast
- power
- internal layer
- 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 - Lifetime
Links
Abstract
The utility model belonging to the field of electric ballast relates to high-performance electric ballast which can resist electromagnetism interference. The shell of the electric ballast is structured by double screens, including an outer screen and an inner screen which stands for screen box of each circuit unit. Flexible comb sheet is arranged on the junction of metal shell of the outer screen and a cover plate. The inner screen is inlayed into the cover plate. Signal interfaces are connected by a coaxial cable or a lead with an outer metal bushing of which is earthed. The input end of a power source and the output end of the ballast thread through bushing type condenser of which metal shell is earthed. EMI filter of the power source comprises passive lowpass of multilevel common mode and differential mode. Semi-bridge or full-bridge power inverting switch is provided with RC or RCD absorbing pulse loop, and decoupling filter network or decoupling capacitance is arranged at a semi-bridge midpoint and at the junction of DC power supply of the inverting switch and earth. The utility model with high EMC is suitable to use in high-level protection of electromagnetism interference for electric ballast in fluorescent lamp, metal halogen lamp and high voltage sodium lamp.
Description
Technical field
The utility model relates to electric source lighting electric ballast technical field, specifically is the electric ballast that a kind of high-performance suppresses electromagnetic interference.
Background technology
Produce electromagnetic noise interference EMI inevitably in the process of electric ballast HF switch work, its frequency range generally is hundreds of hertz to tens megahertz, and this frequency is the narrow band interference that disperses with repeat.Interference is carried out with free space radiation and two kinds of forms of electrical network conduction, its electric field, magnetic field can have a strong impact on normal operation near electronics, the telecommunication apparatus around, great-power electronic ballast produces high-intensity electromagnetic interference, even can make the components and parts of electronic equipment breakdown, cause permanent damage to lose efficacy.It is multiple that the analytical electron ballast produces the electromagnetic noise source, the power device of high-frequency inversion half-bridge or full-bridge switch, as double pole triode, field effect transistor, switching diode etc. when on off state uses, big spike appears in the moment of circuit debugging and shutoff, by circuit and device wire inductance thereof and distributed capacitance produce very big transient current, voltage forms electromagnetic noise interference, pulse repetition frequency height, the fast institute of the switching speed interference strength that produces are just big more.The diode rectification surge voltage produces and disturbs simultaneously, especially high-frequency rectification is because the junction capacitance Charge Storage, the recovery characteristics of charge carrier accumulating effect produces to be disturbed, inductance produces the reverse spike voltage pulse when switch disconnects and leakage field all can produce interference, and the high-frequency pulse current of passive power factor correcting circuit, Active Power Factor Correction pre-adjustment circuit is very big to the conduction influence that electrical network produces electromagnetic interference.The Conducted Electromagnetic Interference signal divides two kinds of common mode and differential modes, and wherein, it is bigger that common mode disturbances suppresses technical difficulty, and electric ballast product electromagnetic compatibility EMC index Design is careless slightly can pass through authentication requesting with regard to difficulty.
The utility model content
The purpose of this utility model provides the electric ballast that a kind of energy is comprehensive, the degree of depth suppresses high-frequency impulse switch generation electromagnetic noise interference.
The utility model technical solution comprises metal-back 2, power supply electromagnetic interface filter 3, rectification circuit and APFC or passive power factor correcting circuit 5, high-frequency pulse oscillator and its half-bridge or full bridge power inverse switch and overload protecting circuit 7, metal shell 2 is made as the dual shield structure, it is to be that outer shielding 2 and each circuit unit box are internal layer shielding 3 by ballast housing, 5,7 constitute, outer shielded metal housing 2 is provided with elastic metallic pectination sheet 21 with cover plate 22 contact portions, internal layer shielding box body 3,5,7 with the dark intercalation mode of cover plate, outer shielding is seamless with the housing of internal layer shielding, the corner is garden shape, outer shielding is installed the isolation that certain space is arranged each other with the internal layer shielding, only for some overlap joints, outer shielded metal housing and the earth join, power input IN, the output OUT that ballast connects fluorescent tube is through the feed-through capacitor 1 of metal shell 2 for ground, 8, internal layer shielding box signaling interface adopts the lead 4 of coaxial cable or overcoat metal tube ground connection, 6 connect;
Power supply electromagnetic interface filter 3, rectification circuit and APFC or passive power factor correcting circuit 5, high-frequency pulse oscillator and its half-bridge or full bridge power inverse switch and overload protecting circuit 7 are provided with the internal layer shielding box respectively, its signaling interface adopts the lead 4,6 of coaxial cable or overcoat metal tube ground connection to connect, half-bridge or full bridge power inverse switch 7 are provided with RC or RCD absorption circuit, and add decoupling filter network or decoupling capacitor at its half-bridge mid point, power inverting switch 7 direct current supply contacts between over the ground;
The power supply electromagnetic interface filter adopts multistage common mode, differential mode LC passive low ventilating filter to form, common mode inductance two-wire and on the magnetic of same closed magnetic circuit, end of the same name is unified to be input or output, differential mode inductance E type magnetic coiling, and leave certain air gap, common mode filtering electric capacity is attempted by on over the ground the large bulk capacitance by feedthrough capacitor, metallic plate is set between the filters at different levels isolates.
The technical program electric ballast metal shell is made as the dual shield structure, screening effectiveness is than the obvious raising of individual layer, greatly place restrictions on the electromagnetic interference field intensity, and at power input, ballast connects the fluorescent tube output through the feedthrough capacitor high frequency bypass of metal shell for ground, prevent that electromagnetic interference from passing through transmission line leakage rediation and conduction, the power supply electromagnetic interface filter adopts multistage common mode, differential mode LC passive low ventilating filter is formed, further suppress the radiation and the conduction of electromagnetic interference, and RC or RCD spike absorption circuit are set at half-bridge or full bridge power inverse switch, half-bridge mid point over the ground and the direct current supply contact add decoupling filter network or decoupling capacitor between over the ground, thereby more intactly suppress the generation of electromagnetic interference.
Description of drawings
Fig. 1 is the utility model dual shield structural representation
Fig. 2 is the utility model metal shell structural representation
Fig. 3 is that the utility model inverse switch is provided with RC or RCD absorbs circuit
With reference to Fig. 1, the metal-back 2 of electric ballast, EMI power filter 3, rectification circuit and You Yuan merit Rate factor correcting circuit or passive power factor correcting circuit 5, high-frequency pulse oscillator are Yu its half-bridge or full-bridge merit Rate inverse switch and overload protecting circuit 7, metal shell 2 is made as the dual shield structure, and it is You Zhen stream device shell Body consists of Wei internal layer shielding 3,5,7 Wei outer shielding 2 and each circuit unit box, outer shielded metal housing 2 Be provided with elastic metallic pectination sheet 21 Yu cover plate 22 contact portions, internal layer shielding box body 3,5, the dark embedding of 7 Yu cover plates The mode of inserting, the housing of outer shielding Yu internal layer shielding is no slit, the corner is Yuan Xing, in the outer shielding Yu Layer shielding installs each other that You Yi decide the isolation in space, overlaps only for the Yi point, and outer shielded metal housing is Yu the earth Xiang connect, the output OUT that power input IN, Zhen stream device connects fluorescent tube is wearing through metal shell 2 Wei ground Xin capacitor 1,8, the lead 4 of internal layer shielding box signaling interface employing coaxial cable or overcoat metal tube ground connection, 6 connect.
The utility model metal shell is taked the dual shield structure, and usually, one deck shielding attenuation amount Zhi Zai is tens of DB, when one deck shielding can not be satisfied shield effectiveness, particularly the great-power electronic ballast interference field was powerful, It is desirable that its outside of Zai Zai adds one deck shielding, establishes two layers of shielding Yu single-layer shield than manying Yi joint attenuation, Can reach the electromagnetic interference source electromagnetic field degree of depth ground Xian Zhi that the high-frequency impulse switch is produced greater than the decay of 100dB In the Zai housing, the degree of depth prevents electromagnetic interference (EMI) emissions and conduction. The ectonexine shield shell is installed and is left the fixed sky of Yi Between the interval, and Xian Yu one point earth is the condition of dual shield necessity, not then lose being used as of its Ying You, Outer shield shell Xiang connects Yu the earth, and Zhe Yang can strengthen Yi Zhi and disturb You that Yong electricity safety guarantee can be provided.
It is extremely important improving the lip-deep discontinuity of shield, and desirable screening model is Yun Xu Zai not Offer hole, slit on the shield, otherwise the degradation shielding properties, and Practical Project Zhong such as Zhen stream device electricity Yuan input, the output that connects fluorescent tube and the inevitable Xu of heat dissipation ventilation are Yaoed perforate, Yin its terminal interface of this Zai Through condenser bypass High-frequency Interference first-harmonic and Xie ripple thereof are set, Leakage prevention.
Fig. 2, Wei prevent the slot leakage of housing 2 Yu cover plates 22, its contact portion of Zai is provided with elastic metallic Pectination sheet 21, (a), (b) of figure Zhong are respectively shield shell structural front view and side view, (c) are shieldings Body cover plate side view, when cover plate Yu housing close after pectination sheet elastic reaction make it keep the conduction close contact, And easily dismounting. Each circuit unit shielding box body is Yu the dark intercalation mode of its cover plate, and namely box body is Yu lid Near or the Xiang of height Xiang etc., the box body outer wall is Yu lid inwall size interference fits more closely.
The corner of shield shell is Yuan Xing makes its interfere with electromagnetic field be difficult for the Guo leakage, and internal layer shields each circuit unit Zhi Between the connection of signaling interface, adopt the lead of coaxial cable or overcoat metal tube ground connection, its internal layer has been shielded Zheng Wu lacks, and the anti-tampering Guo of Yan leaks.
The internal layer shielding box is established respectively by its circuit sequential working characteristics in each basic circuit unit of electric ballast Body reduce Xiang mutually unnecessary Ou close, Yi Wei Zheng machine circuit rational deployment and is had positive Yi Yi.
(a) of Fig. 3 is that half-bridge or full bridge power inverse switch pipe VT are provided with RC absorption spike potential circuit, at the transient absorption peaking voltage of switching tube in conducting and shutoff, the RC effect of discharging and recharging obviously suppresses the generation of electromagnetic interference, and reduces the power consumption of switching tube, reduces the caloric value of device.(b) of Fig. 3 is that RCD absorbs the spike potential circuit, and the effect of diode D is that clamper is placed restrictions on the voltage that switching tube VT voltage is not more than capacitor C.Half-bridge mid point over the ground and the direct current supply contact over the ground between add decoupling filter network or decoupling capacitor, make switch conduction required big electric current of moment by the decoupling filter network electric capacity current source that affords redress, avoid causing bigger current fluctuation and producing electromagnetic noise, and suppress its pollution power supply at power supply and grounded circuit.
The power supply electromagnetic interface filter adopts multistage common mode, differential mode LC passive low ventilating filter to form, it is improved on common power supply electromagnetic interface filter basis, common mode, the passive low-pass filter network of differential mode LC just have the wideband stopband at least more than secondary, in other frequency detuning work except that power frequency sufficiently high insertion loss should be arranged.Common mode inductance two-wire and on the same magnetic that does not add air gap, the inductance turn ratio is 1, two ends of the same name are unified for inputing or outputing, to power current is opposite sign but equal magnitude, can be unsaturated, and common mode disturbances is had stronger inhibition, its rejection coefficient and inductance value direct ratio, but unsuitable excessive, not so easily heating.Differential mode inductance is with E type magnetic and leave air gap to suppress interference effect better than worker's shape magnetic, common mode filtering electric capacity by feedthrough capacitor and connect over the ground large bulk capacitance its disturb bypass effect remarkable, be suitable for using in the shielding construction that wideband disturb to suppress, metallic plate is set between the filters at different levels isolates, suppress parasitic couplings and strengthen filter action.
Specific implementation method
The utility model embodiment 1; comprise metal-back 2; power supply electromagnetic interface filter 3; rectification circuit and APFC or passive power factor correcting circuit 5; high-frequency pulse oscillator and its half-bridge or full bridge power inverse switch and overload protecting circuit 7; metal shell 2 is made as the dual shield structure; it is to be that outer shielding 2 and each circuit unit box are internal layer shielding 3 by ballast housing; 5; 7 constitute; outer shielded metal housing 2 is provided with elastic metallic pectination sheet 21 with cover plate 22 contact portions; internal layer shielding box body 3; 5; 7 with the dark intercalation mode of cover plate; outer shielding is seamless with the housing of internal layer shielding; the corner is garden shape; outer shielding is installed the isolation that certain space is arranged each other with the internal layer shielding; only for some overlap joints; outer shielded metal housing and the earth join; power input IN; the output OUT that ballast connects fluorescent tube is through the feed-through capacitor 1 of metal shell 2 for ground; 8, internal layer shielding box signaling interface adopts the lead 4 of coaxial cable or overcoat metal tube ground connection; 6 connect.
This embodiment is an electronic ballast for fluoresent lamp; high-frequency pulse oscillator fundamental frequency 78kHz; MOSFET fet power pipe constitutes the semi-bridge inversion switch; and overload protecting circuit is set; ballast output power 58w * 2; at its switching tube and connect the RC loop and absorb spike voltage; and add decoupling capacitor at its inverse switch feeder ear; the power supply electromagnetic interface filter adopts two-stage common mode combinational circuit; full-wave bridge heap rectification and passive power factor correcting circuit; metal shell is made as dual shield structure, power input; the output that ballast connects fluorescent tube is through the feedthrough capacitor of metal shell for ground.GB GB17743-99 " limit value and the method for measurement of the radio disturbance characteristic of electric lighting and similar devices " is adopted in the sold inside the country Electro Magnetic Compatibility EMC examination of product, IEC/CISPR15 " method of measurement and the limit of fluorescent lamp and lighting device radio disturbance characteristic " standard testing and German VDE authentication are adopted in the American-European international market of export trade, this embodiment frequency range at the conduction interference voltage of 9kHz～50MHz much smaller than 56dB μ v.
The utility model embodiment 2, technical scheme is identical with embodiment 1, it is a power output 400w high-intensity discharge HID metal halogen lamp electric ballast, take to be with low frequency random noise and sawtooth wave composite frequency modulation high-frequency pulse oscillator (this technology is seen number of patent application 200510061155.7) in order to suppress high-intensity discharge lamp distinctive " acoustic resonance ", its centre frequency is 120kHz, MOSFET fet power pipe constitutes the semi-bridge inversion switch drive, and meet RC and absorb the spike voltage circuit, and add decoupling capacitor at its inverse switch feeder ear, the power supply electromagnetic interface filter adopts two-stage common mode combinational circuit, full-wave bridge heap rectification and APFC APFC, metal shell is made as dual shield structure, power input, the output that ballast connects fluorescent tube is through the feedthrough capacitor of metal shell for ground.Electromagnetic compatibility EMC suppresses the examination of interference characteristic and adopts U.S. FCC part18 standard testing, and conducted interference frequency range 0.45～30MHz is all-round excellent in 48dB μ v limiting value.
The utility model embodiment 3, technical scheme is identical with embodiment 1, it is a power output 1000w high-pressure sodium lamp great-power electronic ballast, equally in order to suppress high-intensity discharge lamp distinctive " acoustic resonance " phenomenon, adopt composite frequency modulation of sine wave and noise high-frequency pulse oscillator (this technology is seen number of patent application 200510061156.1), its centre frequency is 98kHz, MOSFET fet power pipe constitutes the full-bridge inverting switch drive, at its switching tube and meet RCD and absorb the spike voltage circuit, and add decoupling capacitor at its inverse switch feeder ear, the power supply electromagnetic interface filter adopts three grades of common mode combinational circuits, full-wave bridge heap rectification and APFC APFC, metal shell is made as dual shield structure, power input, the output that ballast connects fluorescent tube is through the feedthrough capacitor of metal shell for ground.Electromagnetic compatibility EMC suppresses the examination of interference characteristic and adopts German VDE Valuation Standard test, and the frequency range of narrow band interference is at 10kHz～100kHz magnetic field＜10dB μ A/m, electric field＜66dB μ v/m; Frequency range in 0.1～1MHz magnetic field＜1dB μ A/m, electric field＜50dB μ v/m; Frequency range in 1～30MHz magnetic field＜0.1dB μ A/m, electric field＜30dB μ v/m.
The utility model suppresses electromagnetic interference to be from the ballast switching circuit and to meet RC or source that RCD absorbs spike voltage is set about, take tight dual shield structure, power supply is imported and ballast output lamp lead wears long, and electrocardio holds high frequency bypass, multistage power supply electromagnetic interface filter, multiple link aggregate measures such as shield ground connection, can not only suppress the strong electromagnetic that great-power electronic ballast produces, simultaneously can suppress outside strong electromagnetic well and enter electric ballast, thereby strengthen its job stability greatly.
The utility model high-performance Electro Magnetic Compatibility EMC is fit to various electric ballast and satisfies the specification requirement that electromagnetic interference suppresses, comprise the inhibition of high-power high-intensity discharge lamp electronic ballast electromagnetic interference, its product is used by the illumination in international authentication of EMC and the high request protection electromagnetic environment smoothly.
Claims (3)
1; a kind of high-performance suppresses the electric ballast of electromagnetic interference; comprise metal-back; the power supply electromagnetic interface filter; rectification circuit and APFC or passive power factor correcting circuit; high-frequency pulse oscillator and its half-bridge or full bridge power inverse switch and overload protecting circuit; it is characterized in that: metal shell is made as the dual shield structure; it is to be that outer shielding and each circuit unit shielding box are that the internal layer shielding constitutes by ballast housing; outer shielded metal housing and cover plate contact portion are provided with elastic metallic pectination sheet; the dark intercalation mode of internal layer shield shell and cover plate; outer shielding is seamless with the housing of internal layer shielding; the corner is garden shape; outer shielding is installed the isolation that certain space is arranged each other with the internal layer shielding; only for some overlap joints; outer shielded metal housing and the earth join; power input; the output that ballast connects fluorescent tube is through the feed-through capacitor of metal shell for ground, and internal layer shielding box signaling interface adopts the lead of coaxial cable or overcoat metal tube ground connection to connect.
2; high-performance according to claim 1 suppresses the electric ballast of electromagnetic interference; it is characterized in that: each circuit unit power supply electromagnetic interface filter; rectification circuit and APFC or passive power factor correcting circuit; high-frequency pulse oscillator and half-bridge or full bridge power inverse switch and overload protecting circuit are provided with the internal layer shielding box respectively; its signaling interface adopts the lead of coaxial cable or overcoat metal tube ground connection to connect; half-bridge or full bridge power inverse switch also meet RC; the RCD spike absorbs circuit, and half-bridge mid point over the ground and the direct current supply contact add decoupling filter network or decoupling capacitor between over the ground.
3, high-performance according to claim 1 suppresses the electric ballast of electromagnetic interference, it is characterized in that: the power supply electromagnetic interface filter adopts multistage common mode, differential mode LC passive low ventilating filter to form, the parallel connection of common mode inductance two-wire is on the magnetic of same closed magnetic circuit, end of the same name is unified to be input or output, differential mode inductance E type magnetic coiling, and leave certain air gap, common mode filtering electric capacity is by the high frequency feedthrough capacitor and connect on over the ground the big capacity shunt capacitance, metallic plate is set between the filters at different levels isolates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101883 CN2925001Y (en) | 2006-03-18 | 2006-03-18 | High-performance electronic ballast for controlling electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101883 CN2925001Y (en) | 2006-03-18 | 2006-03-18 | High-performance electronic ballast for controlling electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2925001Y true CN2925001Y (en) | 2007-07-18 |
Family
ID=38261426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620101883 Expired - Lifetime CN2925001Y (en) | 2006-03-18 | 2006-03-18 | High-performance electronic ballast for controlling electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2925001Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298304A (en) * | 2013-05-10 | 2013-09-11 | 中国航天时代电子公司 | Electronic equipment case with protection function against space charged particle irradiation |
| CN109884407A (en) * | 2019-03-28 | 2019-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnet shield effect measuring system and measurement method |
-
2006
- 2006-03-18 CN CN 200620101883 patent/CN2925001Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298304A (en) * | 2013-05-10 | 2013-09-11 | 中国航天时代电子公司 | Electronic equipment case with protection function against space charged particle irradiation |
| CN103298304B (en) * | 2013-05-10 | 2016-08-10 | 中国航天时代电子公司 | A kind of electronic equipment chassis having space charged particle radiation protection function |
| CN109884407A (en) * | 2019-03-28 | 2019-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnet shield effect measuring system and measurement method |
| CN109884407B (en) * | 2019-03-28 | 2021-02-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnetic shielding effectiveness measuring system and measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100521855C (en) | Electronic ballast of inhibiting electromagnetic interference through double shielding | |
| CN204498078U (en) | Ultra broadband shielded enclosure power-supply filter | |
| TWI629863B (en) | Package module for power electronic circuit and power module | |
| CN104200078A (en) | Method for restraining electromagnetic interference (EMI) | |
| CN2925001Y (en) | High-performance electronic ballast for controlling electromagnetic interference | |
| CN210985938U (en) | High-frequency EMC filter circuit and household appliance | |
| CN100508324C (en) | Middle frequency feedback surge protector | |
| CN203193504U (en) | Power supply adapter for proofing information leakage | |
| CN105141272B (en) | Broadband power line carrier communication tests system electric source filter circuit and filter | |
| US20100118506A1 (en) | Electromagnetic interference suppressing apparatus for high-frequency signal generation device | |
| CN209472393U (en) | A kind of spaceborne power filter device | |
| CN211557135U (en) | Charging device comprising silicon carbide charging module | |
| CN103259399A (en) | Method for achieving power adapter electromagnetic compatibility | |
| CN110212752A (en) | A kind of noise reduction filtering circuit | |
| CN206041792U (en) | EMI filter | |
| CN2504827Y (en) | Super-broadband power filter for shield room | |
| CN101778519B (en) | Active electronic ballast | |
| CN2896749Y (en) | TV-set anti-interference circuit | |
| CN101420842B (en) | Equipment for reducing overproof radiation caused by electricity power line | |
| CN213243815U (en) | Electromagnetic interference prevention circuit, television power supply and television | |
| CN205070954U (en) | Broadband power line carrier communication is power filter circuit and wave filter for test system | |
| CN101232274A (en) | Filter circuit for reducing differential signal electromagnetic interference | |
| CN210793105U (en) | High electromagnetic compatibility commercial car wiper motor | |
| CN211125877U (en) | Lithium battery capable of shielding high-frequency electromagnetic interference and surge impact | |
| CN210297657U (en) | Low leakage current power filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090729 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |