CN100536764C - Silver/silver chloride powder solid electrode and preparation method - Google Patents
Silver/silver chloride powder solid electrode and preparation method Download PDFInfo
- Publication number
- CN100536764C CN100536764C CNB200710052564XA CN200710052564A CN100536764C CN 100536764 C CN100536764 C CN 100536764C CN B200710052564X A CNB200710052564X A CN B200710052564XA CN 200710052564 A CN200710052564 A CN 200710052564A CN 100536764 C CN100536764 C CN 100536764C
- Authority
- CN
- China
- Prior art keywords
- silver
- electrode
- chloride
- electrode material
- aqueous solution
- 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.)
- Active
Links
Images
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a method for preparing a novel silver/silver chloride powder solid electrode, which comprises mixing fine silver powder with particle diameter less than 100 mu m with silver nitrate solution and chloride solution to give dispersive micro powder, molding in dies, sintering, and chemical and electrochemical treating to give solid electrode. The electrode has highly dispersed electrochemical interface, high anti-interference ability, high electrode potential stability, and convenient mechanical treatment. The electrode can accurately reliably detect bioelectric signal, be used as medical electrical stimulation electrode and bioelectric recording electrode, and can also be used as electrochemical reference electrode.
Description
Technical field
The present invention relates to silver/silver/silver chloride powder solid electrode and manufacture method thereof, belong to biomedical and electrochemical sensor field, be applicable to bio electricity record and electric stimulation electrode, and the electrochemistry reference electrode.
Background technology
Silver/silver chloride (Ag/AgCl) electrode is a kind of common reference electrode, and it is big to have an exchange current density, is difficult for polarization, and impedance is low, the constant advantages such as (the DC drift are smaller) of electrode potential.Because its detection of biological signal of telecommunication accurately, the sophisticated as a comparison electroencephalogram of Ag/AgCl electrode in actual applications, electromyogram and Electrocardiographic recording electrode have been widely used in the brain electro-detection, and EMG detection and electrocardio detect.Common Ag/AgCl electrode adopts the method for electrochemistry chlorination or direct chlorination to make, this type of electrode in use, its surperficial AgCl film weares and teares easily, and then has influenced the stability and the service life of electrode.
Silver/silver chloride (Ag/AgCl) powder solid electrode has silver and silver chloride granules high degree of dispersion structure, and its Ag-AgCl interface increases greatly.Silver/silver chloride (Ag/AgCl) coating electrode, its major advantage is: 1) anti-polarization jamming performance is strong, and electrode potential stability is high; 2) make things convenient for machining to form the electrode of different shape; 3) do not have the surface abrasion problem, polishing can generate new electrode surface.These characteristics make silver/silver/silver chloride powder solid electrode can accurately measure the bio electricity weak signal.
Along with the fast development of new medical skill, the demand of the reliable silver/silver chloride electrode of precision is increased day by day.Carry out the measurement of vision or auditory evoked potential with it, can reduce noise, improve signal to noise ratio.Because the mutual conversion of the convenient Ag-AgCl of silver/silver/silver chloride powder solid electrode is suitable not only as electric stimulation electrode but also as the bio electricity recording electrode, so it is the first-selected electrode of bioelectrical impedance tomography (EIT) system.Silver/silver/silver chloride powder solid electrode still is the vitals of biofeedback rehabilitation instrument, and these instruments are used for apoplexy, the rehabilitation of diseases such as hyperkinetic syndrome.
Because silver/silver chloride solid electrode has high strength and is easy to processing characteristics, be used for special environment than glass silver/silver chloride reference electrode is more suitable, be applicable in the solution system of chloride ion, as the reference electrode in sea water and special chemical environment.
Because the application of silver/silver/silver chloride powder solid electrode constantly enlarges the demand of disclosed silver/silver/silver chloride powder solid electrode manufacture method incompatibility different application.With the present invention two near-earth patent documents are mutually arranged.United States Patent (USP) (United Stated Patent, 4324680) a kind of silver/silver/silver chloride powder solid electrode material method is disclosed, be with little silver-colored granule and hydrochloric acid reaction, or in little silver-colored granule the logical gas that contains chlorine, by chemical reaction little silver-colored particle surface is formed one deck silver chloride coating, the powder solid electrode is produced in moulded section again.The shortcoming of this method is that technology contains corrosive medium, and the silver chloride difficult quality of its generation is controlled accurately and easily.And the drift of the electrode potential of report reaches 20-250 μ V/ minutes.The method of another disclosed Chinese invention patent (CN 1227524C) is silver, silver chloride and trim micropowder to be mixed be pressed into electrode slice.Silver chloride mixes to mill through silver nitrate and solid potassium chloride to be made, and with solution system reacting phase ratio, its reaction is slow.This invention is used at the electrochemical measurement in briny environment, and its trim composition makes it be not suitable for being applied to Biomedical Instruments and uses.
Summary of the invention
At the problems referred to above, the present invention proposes the manufacture method of a silver/silver/silver chloride powder solid electrode material, and described method can generate chlorination argentum powder quickly, and Dispersion of Particles is good, and quality is controlled easily.The present invention also proposes the silver/silver/silver chloride powder solid electrode of the adaptation different application that makes with above-mentioned electrode material.
Technical scheme provided by the invention is: a kind of preparation method of electrode material of silver/silver/silver chloride powder solid electrode, argentum powder is dispersed in the silver nitrate aqueous solution, under agitation add chloride aqueous solution then, obtain argentum powder and silver chloride admixed finepowder, the admixed finepowder drying, moulded section, sintering makes silver/silver/silver chloride powder solid electrode material.
Described argentum powder is the argentum powder of particle diameter＜100 micron.
The mass ratio of silver chloride is 1:0.05-1:3.5 in above-mentioned argentum powder and the silver chloride aqueous solution.
Above-mentioned villaumite is potassium chloride, sodium chloride or ammonium chloride.
The concentration of above-mentioned silver nitrate aqueous solution at 0.05 mole to saturated concentration; The concentration of chloride aqueous solution be 0.05 mole to saturated concentration, the molar concentration rate of silver nitrate aqueous solution and chloride aqueous solution is 1:7-7:1.
The present invention behind the sintering, carries out chemistry or electrochemical treatments to the admixed finepowder Moulding and shaping again, makes silver/silver/silver chloride powder solid electrode material.
Described chemical treatment is to handle to dilute hydrochloric acid solution or the hypochlorous acid solution soaking of 1.0M with 0.01M; Described electrochemical treatments is in the solution of chloride ion-containing, handles (polarization potential be-0.55 to 0.6V) with potentiostatic method, or handles (processing electric current 0.01-1.0mA/cm with galvanostatic method
2), or handle with triangular wave electric potential scanning or square wave potential pulse, its handle current potential-0.5 and 0.8V between.Above-mentioned current potential is relative standard calomel electrode (SCE) current potential.
The present invention also provides a kind of silver/silver/silver chloride powder solid electrode, comprise the electrode material (electrode cores) with measurement face, the insulating barrier that is coated on electrode material surface and the lead that electrically connects with electrode material, wherein electrode material measurement face exposes outside insulating barrier, form and measure passage, its key is: the electrode material that described electrode material makes for said method of the present invention.
Above-mentioned electrode material electrically connects by filamentary silver and lead, and filamentary silver and connecting wire contact are enclosed in the insulating barrier.
The present invention can generate chlorination argentum powder quickly with said method, and Dispersion of Particles is good, and quality is controlled easily.Electrode material with said method is made can be used for being made into less electric stimulation electrode, as 0.09cm
2To 0.50cm
2Size, they can be by big relatively electric current density (as 10mA/cm
2) and can not produce polarization.Can be applicable to needs to use the smaller electrode area and the occasion of higher current density.And the myoelectricity stimulating electrode of the common usefulness of prior art is the electric silica gel thin slice, and area is bigger, is unfavorable for optionally stimulated muscle and nerve.The superior place of another of electrode of the present invention is that measurement noise is low, is beneficial to low frequency signal especially and measures.Because the special microstructure of electrode material, their equilibrium electrod potential is very stable, and Fig. 3 has compared a pair of silver/silver/silver chloride powder solid electrode current potential and silver/silver chloride coating electrode current potential concerns over time.Obviously see easily that a pair of silver/silver/silver chloride powder solid electrode current potential quite stable only has the variation (Fig. 4) of 27 μ V in 12 hours.
The electrode that the present invention makes has the electrochemical interface of high degree of dispersion, makes its strong anti-interference performance, and electrode potential stability is high, conveniently is machined into the electrode of different shape.This electrode can be accurately the detection of biological signal of telecommunication reliably, can be used as electro-medical stimulating electrode and bio electricity recording electrode; Also can be used as the electrochemistry reference electrode.
Description of drawings
Fig. 1 is the sketch map of silver/silver/silver chloride powder solid electrode of the present invention.
Fig. 2 is the sketch map of silver of the present invention/silver/silver chloride powder solid electrode material (electrode cores).
Fig. 3 is for scheming monitoring Ag/AgCl coating electrode (●) and Ag/AgCl powder solid electrode of the present invention (▲) current potential-time response in the 0.01M pH buffer saline at room temperature.
Fig. 4 is an Ag/AgCl powder solid difference in Electrode Potential of the present invention-time response curve, as can be seen its electrode potential in 12 hours changing value less than 27 μ V.Among the figure " _ _ _ " be excursion.
The specific embodiment
Referring to Fig. 1, a kind of silver/silver/silver chloride powder solid electrode, comprise the electrode material 1 (electrode cores) with measurement face 5, the insulating barrier 4 that is coated on electrode material 1 surface and the lead 3 that electrically connects with electrode material 1, wherein the measurement face 5 of electrode material 1 exposes outside insulating barrier 4, form and measure passage, described electrode material can be according to making for method provided by the invention such as embodiment 1-3.
Above-mentioned electrode material 1 electrically connects by filamentary silver 2 and lead 3, and filamentary silver 2 is enclosed in the insulating barrier 4 with lead 3 interfaces.
The invention will be further described below in conjunction with embodiment.
Embodiment one. get the AgNO of 1.2g
3(analytical pure) is dissolved in the distilled water, is made into the silver nitrate aqueous solution of concentration 0.02M, and the Ag powder (mean diameter 80 μ m) of getting 10g joins in the silver nitrate aqueous solution, and stirring is uniformly dispersed it and obtains Ag/AgNO
3Dispersion.The aqueous solution that the NaCl (analytical pure) of 0.4g is made into 0.1M joins in the Ag/AgNO3 dispersion under the state that stirs.Stop to stir after the reaction end, the clear liquid of getting the upper strata detects with silver nitrate and potassium chloride whether excessive chloride ion and silver ion are arranged respectively, anhydrates layer with the distilled water cleaning, up to there not being excessive reactive ion to occur if there is excessive ion then to incline.The hypsokinesis layer that anhydrates, with reacted product in baking oven with about 80 ℃ temperature oven dry.The ratio of Zhi Bei Ag/AgCl approximately is that mass ratio is 1:0.1 like this, and amounting to mol ratio is that 1:0.07. uses 2500kg/cm with the powder and the thin filamentary silver that make in mould
2Pressure be pressed into as shown in Figure 2 the electrode material that is embedded with filamentary silver 21, with its sintering in high-temperature electric resistance furnace, heating up causes to 300 ℃ of sintering 10 minutes.Filamentary silver 2 is encapsulated with lead 3 welding with epoxy resin 4.(1Hz) oxidation is 5 minutes for 0.1V to 0.5V, SCE with triangular wave in the HCl of 0.5M with this electrode.
Embodiment two: the AgNO that gets 3.5g
3(analytical pure) is dissolved in the distilled water, is made into the silver nitrate solution of the about 0.5M of concentration, gets 1g Ag powder (mean diameter is 1 μ m, 99.95%) and is dispersed in the silver nitrate solution system with blender.Make dispersed uniform.NH with 1.1g
4The solution that Cl (analytical pure) is made into 0.2M is added drop-wise to Ag/AgNO at the state that stirs with Dropping funnel
3In the dispersion.The following step is with embodiment one.The ratio of Zhi Bei Ag/AgCl approximately is that mass ratio is 1:3 like this.The powder and the thin filamentary silver that make are used 7500kg/cm in mould
2Pressure be pressed into as shown in Figure 2 the electrode material that is embedded with filamentary silver 21, sintering is 5 minutes in 430 ℃ electric furnace.Again filamentary silver 2 is encapsulated with lead 3 welding with epoxy resin 4.With this electrode in the NaCl of 0.10M with constant potential reduction (-0.1V, SCE) 5 minutes.
Embodiment three. get the AgNO of 2.4g
3(analytical pure) is dissolved in the silver nitrate aqueous solution that is made into concentration 0.05M in the distilled water, gets 1g Ag powder (mean diameter is 1 μ m, 99.95%) and is dispersed in the silver nitrate solution system with blender.Make dispersed uniform.The KCl (analytical pure) of 1.05g is made into the KCl aqueous solution of concentration 0.3M, joins in the Ag/AgNO3 dispersion with Dropping funnel at the state that stirs.The following step is with embodiment one.The ratio of Zhi Bei Ag/AgCl approximately is that mass ratio is 1:2 like this, and amounting to mol ratio is 1:1.5.The powder and the thin filamentary silver that make are used 4500kg/cm in mould
2Pressure be pressed into as shown in Figure 2 the electrode material that is embedded with filamentary silver 21, sintering is 15 minutes in 250 ℃ electric furnace.Again filamentary silver 2 is encapsulated with lead 3 welding with epoxy resin 4.
Embodiment four. get the AgNO of 2.0g
3(analytical pure) is dissolved in the silver nitrate aqueous solution that is made into concentration 0.1M in the distilled water, gets 5g Ag powder (mean diameter is 25 μ m, 99.95%) and is dispersed in the silver nitrate solution system with blender.Make dispersed uniform.The KCl (analytical pure) of 1.4g is made into the KCl aqueous solution of concentration 0.3M, slowly joins in the Ag/AgNO3 dispersion at the state that stirs.The following step is with embodiment one.The ratio of Zhi Bei Ag/AgCl approximately is that mass ratio is 1:0.5 like this.The powder and the thin filamentary silver that make are used 5500kg/cm in mould
2Pressure be pressed into as shown in Figure 2 the electrode material that is embedded with filamentary silver 21, sintering is 10 minutes in 400 ℃ electric furnace.This electrode (core) is immersed in the chemical treatment solution, it is the HClO that contains 0.1 mole of HCl and 0.014 mole again
3Aqueous solution.At last filamentary silver 2 is encapsulated with lead 3 welding with epoxy resin 4.
The electrode potential of the electrode of making of said method is very stable, compares with silver/silver chloride coating electrode commonly used, and the current potential drift is very little, as shown in Figure 3.Their drift only had 27 μ V in 12 hours, per hour drift is seen Fig. 4 less than 15 μ V.
Claims (10)
1. the preparation method of the electrode material of a silver/silver/silver chloride powder solid electrode, argentum powder is dispersed in the silver nitrate aqueous solution, under agitation add chloride aqueous solution then, obtain argentum powder and silver chloride admixed finepowder, the admixed finepowder drying, moulded section, sintering makes silver/silver/silver chloride powder solid electrode material.
2. method according to claim 1 is characterized in that: described argentum powder is the argentum powder of particle diameter＜100 micron.
3. method according to claim 1 and 2 is characterized in that: the mass ratio of argentum powder and silver chloride is 1: 0.05-1: 3.5.
4. method according to claim 1 and 2 is characterized in that: villaumite is potassium chloride, sodium chloride or ammonium chloride.
5. method according to claim 1 and 2 is characterized in that: the concentration of silver nitrate aqueous solution at 0.05M to saturated concentration; The concentration of chloride aqueous solution be 0.05M to saturated concentration, the molar concentration rate of silver nitrate aqueous solution and chloride aqueous solution is 1: 7-7: 1.
6. method according to claim 1 and 2 is characterized in that: to the admixed finepowder Moulding and shaping, behind the sintering, carry out chemistry or electrochemical treatments again, make silver/silver/silver chloride powder solid electrode material.
7. method according to claim 6 is characterized in that: described chemical treatment is handled for dilute hydrochloric acid solution or hypochlorous acid solution soaking with 0.01-1.0M; Described electrochemical treatments is in the solution of chloride ion-containing, handles with potentiostatic method, or handles with galvanostatic method, or handle with triangular wave electric potential scanning or square wave potential pulse.
8. method according to claim 7 is characterized in that: the polarization potential that potentiostatic method is handled is-0.55 to 0.6V; The electric current that galvanostatic method is handled is 0.01-1.0mA/cm
2The current potential that triangular wave electric potential scanning or square wave potential pulse are handled-0.5 and 0.8V between; Above-mentioned current potential is a relative standard calomel electrode current potential.
9. silver/silver/silver chloride powder solid electrode, comprise the electrode material with measurement face, the insulating barrier that is coated on electrode material surface and the lead that electrically connects with electrode material, wherein electrode material measurement face exposes outside insulating barrier, form and measure passage, it is characterized in that: electrode material is the electrode material that the described method of claim 1 makes.
10. electrode according to claim 9 is characterized in that: electrode material electrically connects by filamentary silver and lead, and filamentary silver and connecting wire contact are enclosed in the insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710052564XA CN100536764C (en) | 2007-06-27 | 2007-06-27 | Silver/silver chloride powder solid electrode and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710052564XA CN100536764C (en) | 2007-06-27 | 2007-06-27 | Silver/silver chloride powder solid electrode and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101084829A CN101084829A (en) | 2007-12-12 |
| CN100536764C true CN100536764C (en) | 2009-09-09 |
Family
ID=38936123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710052564XA Active CN100536764C (en) | 2007-06-27 | 2007-06-27 | Silver/silver chloride powder solid electrode and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100536764C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308111B (en) * | 2008-04-07 | 2011-12-21 | 中国船舶重工集团公司第七二五研究所 | Hot dip silver coating /silver halides reference electrode and method for making same |
| CN102169103B (en) * | 2010-12-07 | 2013-05-29 | 北京科技大学 | Solid Ag/AgCl electrode core and preparation method and applications thereof |
| CN102368059A (en) * | 2011-10-26 | 2012-03-07 | 天津大学 | Method for preparing reference electrode with Ag/AgCl solid powder |
| CN103192070B (en) * | 2013-04-17 | 2015-07-08 | 苏州格林泰克科技有限公司 | Silver/silver chloride electrode material, method for manufacturing same and electrode |
| CN104287714A (en) * | 2014-11-10 | 2015-01-21 | 青岛柏恩鸿泰电子科技有限公司 | Silver/ silver chloride powder electrode |
| CN105067673B (en) * | 2015-07-23 | 2017-12-22 | 河海大学 | Quickly generate the method for fine and close chlorination silvering and its silver chloride electrode of preparation |
| JP2018533160A (en) * | 2015-08-20 | 2018-11-08 | パーカー・ハニフィン・コーポレーション | Silver-silver chloride composition and electrical device containing the same |
| CN105311740A (en) * | 2015-11-17 | 2016-02-10 | 深圳市一体太糖科技有限公司 | Electrical stimulation coupling liquid and electrical stimulation electrode with coupling liquid |
| CN105311739A (en) * | 2015-11-17 | 2016-02-10 | 深圳市一体太糖科技有限公司 | Electrical stimulation conduction liquid and electrical stimulation electrode with conduction liquid |
| EP3809128A4 (en) * | 2018-06-14 | 2021-07-14 | NOK Corporation | Method for producing silver-silver chloride electrode |
| CN111707723A (en) * | 2020-06-09 | 2020-09-25 | 上海三屹电子科技有限公司 | Silver/silver chloride slurry with high signal-to-noise ratio for biological detection electrode and preparation method thereof |
| CN112387973A (en) * | 2020-10-29 | 2021-02-23 | 江苏集萃脑机融合智能技术研究所有限公司 | Preparation process of powder electrode |
| CN112924506B (en) * | 2021-03-08 | 2023-01-10 | 湖南科技大学 | Preparation method of simple electrochemical micro sensor, product and application thereof |
-
2007
- 2007-06-27 CN CNB200710052564XA patent/CN100536764C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| Ag/Agcl高温参比电极的制备. 张清，李萍，白真权.应用科技，第32卷第6期. 2005 |
| Ag/Agcl高温参比电极的制备. 张清，李萍，白真权.应用科技，第32卷第6期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101084829A (en) | 2007-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100536764C (en) | Silver/silver chloride powder solid electrode and preparation method | |
| Cui et al. | Poly (3, 4-ethylenedioxythiophene) for chronic neural stimulation | |
| US9308299B2 (en) | Adherent metal oxide coating forming a high surface area electrode | |
| CN106383158B (en) | A kind of hydrogen peroxide based on silver-graphene nano-complex is without enzyme sensor and preparation method thereof | |
| WO2019055784A1 (en) | Implantable devices using 2d metal carbides and nitrides (mxenes) | |
| CN103336043A (en) | Preparation method of hydrogen peroxide biosensor | |
| CN109502574A (en) | A kind of preparation and application of molybdenum disulfide nano flower-redox graphene material | |
| CN111839532A (en) | Flexible epidermis electrochemistry biosensor based on conductive hydrogel | |
| JP6776438B2 (en) | Electrodes for measuring biological information | |
| JP6654164B2 (en) | Silver chloride coated particles | |
| Bao et al. | Development and characterisation of electroplating silver/silver chloride modified microelectrode arrays | |
| CN106108890A (en) | A kind of medical dry electrode with high conduction performance and manufacture method thereof | |
| CN1924102B (en) | Preparation method of lead dioxide porous electrode | |
| Shahrestani et al. | Iridium oxide pH sensor based on stainless steel wire for pH mapping on metal surface | |
| CN103926296A (en) | Biosensor for detecting biogenic amine and preparation method thereof | |
| CN109142475B (en) | Preparation and application of enzyme-free nickel oxide reduced graphene oxide composite material electrode | |
| CN115400344A (en) | Silver-based composite bioelectricity electrode and preparation method thereof | |
| Li et al. | Electrochemical sensor based on antibody modified of MnO2@ CNTs/GCE for cardiac myoglobin detection in human blood serum as a sensitive marker of muscle damage | |
| Li et al. | Fabrication of an electrochemical sensor based on a nanocomposite of CoO@ f-CNTs for determination of tramadol narcotic drug in urine of athlete volunteers | |
| CN206700163U (en) | A kind of dry electrode and its manufacture craft | |
| Santhosh et al. | Fabrication of potentiometric glucose biosensor based on two variant dimensions of green synthesized silver nanostructures as a single nanohybrid compartment—a green approach | |
| KR20210059089A (en) | Graphene electrode and method for manufacturing the Graphene electrode using cationic polyelectrolyte | |
| CN104287714A (en) | Silver/ silver chloride powder electrode | |
| Abdelkader et al. | 3-D electrodes for electrochemical sensors: Review in different approaches | |
| CN111225607A (en) | Method for manufacturing bioelectrode |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: DUAN YANWEN Free format text: FORMER OWNER: WUHAN GREEN TEK TECHNOLOGY CO., LTD. Effective date: 20110415 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430072 ROOM 2406, BUILDING E, SILVER SEA PARK, HONGSHAN DISTRICT, WUHAN CITY, HUBEI PROVINCE TO: 430070 ROOM 2406, BUILDING E, SILVER SEA VILLAS, GUANGBA ROAD, HONGSHAN DISTRICT, WUHAN CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110415 Address after: Eight Yinhai road 430070 Hubei Nga Court E city of Wuhan province Hongshan District building 2406 room Patentee after: Duan Yanwen Address before: 430072 Hubei Province, Wuhan city Hongshan District Yinhai Yayuan E building 2406 room Patentee before: Wuhan Green Tek Technology Co., Ltd. |