CN103695857A - Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating - Google Patents
Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating Download PDFInfo
- Publication number
- CN103695857A CN103695857A CN201310725830.6A CN201310725830A CN103695857A CN 103695857 A CN103695857 A CN 103695857A CN 201310725830 A CN201310725830 A CN 201310725830A CN 103695857 A CN103695857 A CN 103695857A
- Authority
- CN
- China
- Prior art keywords
- dlc
- coating
- cleaning
- diamond
- film
- 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.)
- Pending
Links
Images
Landscapes
- Physical Vapour Deposition (AREA)
- Surgical Instruments (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
The invention discloses a preparation process for medical operating forceps with an antibacterial and anticorrosive DLC (diamond-like carbon) film coating. The preparation process comprises the following steps of washing, drying, pretreatment and sputtering coating of a double-layer DLC film. According to the preparation process, the product is prepared by utilizing the acid resistance, alkali resistance, high temperature resistance and bacterium growth suppression characteristics of DLC and a DLC coating technology; the medical operating forceps with the DLC film coating are permanently anticorrosive, acid-resistant, alkali-resistant and high temperature-resistant, and can suppress the growth of bacteria.
Description
Technical field
The present invention relates to medical apparatus field, relate in particular to a kind of preparation technology of aseptic corrosion resistant quasi-diamond film coating medical surgical forceps, the present invention also can be applied to other medical apparatus.
Background technology
Medical surgical forceps is medicine equipment indispensable in various operations, his major function be various in, in surgical operation, play the effect of hemostasis, so that operation carry out smoothly, reduce the shock of patient because bleeding and too much causing, the risk of operation is dropped to minimum, medical surgical forceps is the title of a summary, its classification has more than hundreds of kind, as: pig haemostatic clamp for breaking tail, cesarean incision hemostatic forceps, T shape mosquito forceps, Anti-tilting hemostat for surgery, Quick hemostat, scalp hemostatic forceps, artery clamp for stripping main saphenous vein, Multifunctional hemostatic forceps, hemostatic forceps for lip part etc.Clear and definite regulation in the related specifications of hospital disinfection and hospital infection management or standard, the medicine equipment of use carries out sterilizing again after must thoroughly cleaning up.Any organism remaining on medicine equipment all can hinder penetrating of the sterilization factor, thereby affects sterilization quality.
Therefore, cleaning the effect of having played removing obstacles for sterilization of medical instrument, is the necessary process of sterilization of medical instrument pre-treatment, guarantees especially the important step of sterilization of medical instrument quality.But in actual instrument cleaning work, some serious problems that the medicine equipment of existence self produces, to apparatus sterilizing, work brings hidden danger.
The dirts such as the blood of the apparatus surface adhesion after use, fester, body fluid, scrub with clear water immediately after instrumentation, then soak 5min in 40 ℃ of multienzyme scavenging solutions, take out and rinse well with flowing water.
The fundamental principle that the clean-out system of disinfection technology standard regulation is selected is the one-tenth component selections according to pollutent, and the apparatus of inorganic pollution is selected acidic cleaner, and the apparatus of Organic pollutants is selected alkaline cleaner; To Organic pollutants, article structure cleaning complicated, rough apparatus, need use multienzyme cleaning agent.
These clean, the solution of sterilization also causes corrosion to apparatus itself when removing apparatus surface contaminants, and its corrosion is that the metal body that the thin spot of joint, teeth groove, rill, crack and chromium coating from apparatus starts corrosion-crack-top layer is peeled off-corroded just produces rust staining.And the reason that these burn into corrosions produce is exactly because chromium coating or other coatings of apparatus can not be acidproof, alkaline-resisting, high temperature resistant.
Carbon is a kind of element of uniqueness, and it provides the basic framework of all plant and animal tissues.Carbon biology has been used decades.RESEARCH OF PYROCARBON remains conventional valve prosthesis biomaterial, but medical artificial limb and instruments the allotropic substance coating of widely used carbon be but diamond-film-like (DLC)---the meta form of-kind of amorphous carbon because it has excellent mechanical property and good biocompatibility.
DLC has shared graphite and adamantine performance, such as: high rigidity and Young's modulus, unreactiveness, good resistivity, infrared transparent, height are analysed the rate of penetrating and remarkable smoothness.These performances obtain in the unordered film of the anisotropy that there is no crystal boundary, therefore make DLC and diamond compare production cost more cheap.In recent years, the biocompatibility of DLC, because of the application of its potential a plurality of biomedical sectors, has become the focus of broad research.DLC coating also can be by reducing platelet adhesion reaction and activation for reducing the generation of thrombus.
Summary of the invention
In order to solve above technical problem, the object of this invention is to provide a kind of preparation technology of aseptic corrosion resistant quasi-diamond film coating medical surgical forceps.The present invention also can be widely used in other medical apparatus, adopt never breed bacteria of diamond-film-like coating medical apparatus tool that technique of the present invention makes, because diamond-film-like self has the function of bacteria growing inhibiting, the characteristic of the bacterium that do not grow under any envrionment conditions.
It is the medicine equipment tool that not blood coagulation and human body have affinity that the present invention uses quasi-diamond film coating medical surgical forceps.Because being optimal biological engineering material, diamond-film-like there is the characteristic with human body affinity and not blood coagulation.And process through chromium plating, the traditional technology method such as zinc-plated on the utensil using at present surface, these coating not only do not possess with the characteristic of human body affinity and not blood coagulation and also can have a negative impact.
Above-mentioned purpose is achieved through the following technical solutions:
The present invention uses magnetron sputtering method.The principle of magnetron sputtering is: under vacuum, ionize rare gas element and form plasma body, under the attraction of gaseous ion additional bias on target, bombard target, sputter carbon atom and deposit on matrix.It utilizes the effect of contraction of crossed electric and magnetic field to secondary electron, and the ionization by collision probability of secondary electron and working gas is increased greatly, has improved the density of plasma body.Under identical sputtering bias-voltage, the density of plasma body increases, and sputtering raste improves, and has increased the sedimentation rate of film.And because the impact ionization rate of secondary electron and operating air pressure is high, thereby can under lower operating air pressure (10-1～1Pa) and lower sputtering voltage, (500V) produce self-maintained discharge.The rare gas element that sputter is used is generally selected argon gas (Ar), because its sputtering raste is the highest.
A preparation technology for aseptic corrosion resistant quasi-diamond film coating medical surgical forceps, comprises the steps:
The first step: dismounting is decomposed: the apparatus joint of the operating forceps with joint, teeth groove, rill is opened, turn on screw, dismounting is decomposed, and in order to make the comprehensive covering of DLC film of deposition, prevents from leaving gap and dead angle and again corrodes and corrosion;
Second step: cleaning-drying, with raw spirit, clean and remove matrix surface slushing oil, then the matrix of cleaning is put into thermostatic drying chamber, at 1-2min inner drying, temperature is controlled at 50-60 ℃;
Described cleaning and dry be continuous action, after cleaning, in 10-30s, be dried, prevent that outside surface oxidation from can have a strong impact on the sticking power of DLC film;
The 3rd step: pre-treatment: carry out " pre-treatment " 50-60min with preprocessing solution etching matrix surface in Ultrasonic Cleaners, dry, in order to increase the nucleation density of diamond film deposition;
Described preprocessing solution is: use Na
2feO
4, potassium hydroxide, water is formulated by weight the ratio of 1:2:20; Na
2feO
4be oxidation products and reduzate, 2molFeSO
4while reacting, total 10mol transfer transport, is therefore used Na
2feO
4, potassium hydroxide, aqueous solution pre-treatment both can thoroughly clear up greasy dirt, the rusty stain of workpiece surface, can also etching workpiece surface, make the coating adhesion of deposition better.
The 4th step: ise cleans: first pass into Ar, C or H and matrix is carried out to the pre-sputtering of 6-8min, sputtering parameter is microwave source (ECR) power 800W, volts DS 1600V;
The 5th step: coating transition layer: ion bombardment etching continues to vacuumize after cleaning, and vacuum tightness will reach 7.0 * 10
-4pa, passes into N and O
2the injection effect that utilizes the high bias voltage of pulse to produce, it is that well antiacid, alkalescence can because nitrogen peroxide titanium ceramic membrane has for transition rete (prime coat) that negative electrode adopts the metal titanium Ti target deposition NO2Ti that purity is 99.9%;
The 6th step: coating DLC work tunic: after the first layer, close the power supply of heating, intermittent time 5min, this is to make workpiece further cooling, makes next step DLC coating have very high sticking power.And then unlatching cathode power, pass into H and CH
4, cathode targets is the graphite of purity 99.9%, adopts direct current (DC) bias, controls 150 ℃ of temperature <,, on transition rete NO2Ti, deposit DLC work rete, diamond like carbon film deposition is complete.
Positively effect of the present invention is: the present invention mixes Ti and O2 introduces the content that TiO2 nanoparticle increases the hydrogen in DLC film, has reduced thin film stress and water contact angle.TiO2 nano particle content has increased the fungicidal activity of DLC film, therefore intestinal bacteria and various mould is had to very strong antibacterial.Salient features shows: 1, without mould-growth; 2, coatingsurface pattern and composition quality are good, and film surface is smooth, zero defect; 3, coating frictional coefficient can reach 0.13, and traditional film coating apparatus and equipment do not reach; 4, coating adhesion reaches 37N; 5, coat-thickness reaches 8-10 μ m.
Accompanying drawing explanation
Fig. 1 is quasi-diamond film coating medical surgical forceps production technological process.
Fig. 2 is for adopting the surface topography map of the quasi-diamond film coating of the present invention's making.
Fig. 3 is for adopting the sticking power of the quasi-diamond film coating of the present invention's making to detect figure.
Embodiment
For further describing the present invention, below with specific embodiment, technical scheme of the present invention is described, but protection scope of the present invention is not limited only to this.
Embodiment 1: the Anti-tilting hemostat for surgery coating DLC film (hereinafter to be referred as " matrix ") of take is example:
1, will open with mosquito forceps joint, joint, and turn on screw, dismounting is decomposed, and in order to make the comprehensive covering of DLC film of deposition, prevents from leaving gap and dead angle and again corrodes and corrosion;
2, then with raw spirit, clean and remove matrix surface slushing oil, the matrix of cleaning is put into thermostatic drying chamber, at 1min inner drying, temperature is controlled at 50 ℃; Described cleaning and dry be continuous action, after cleaning, in 10s, carry out drying step, prevent that outside surface oxidation from can have a strong impact on adhering to of DLC film
3, then with preprocessing solution etching matrix surface in Ultrasonic Cleaners, carry out " pre-treatment " 50-60min, dry, in order to increase the nucleation density of diamond film deposition; Described preprocessing solution is: use Na
2feO
4, potassium hydroxide, water is formulated by weight the ratio of 1:2:20;
4, matrix is installed on to DLC coating apparatus planetary rotation hanger, starting outfit, passes into Ar and matrix is carried out to the pre-sputtering of 6min.Sputtering parameter is microwave source (ECR) power 800W, volts DS 1600V.
5, coating transition layer (prime coat) NCi film, after pre-sputtering, continues to vacuumize, and vacuum tightness will reach 7.0 * 10
-4pa, passes into N and O
2, negative electrode adopts the titanium target that purity is 99.9%, and the injection effect that utilizes the high bias voltage of pulse to produce is prepared NTi rete as prime coat;
6, in order to control temperature, make the second layer DLC working film of coating there is better sticking power, after the first layer, close heating power supply, intermittent time 5min, and then open, pass into H and CH
4, cathode targets is the graphite of purity 99.9%, adopts direct current (DC) bias, controls 150 ℃ of temperature <, deposits DLC theca externa on counterdie, deposition of diamond thin films is complete.
Embodiment 2: the tweezers of take with teeth groove, rill are example:
Tweezers joint with teeth groove, rill is opened, and dismounting is decomposed, and in order to make the comprehensive covering of DLC film of deposition, prevents from leaving gap and dead angle and again corrodes and corrosion; Then with raw spirit, clean and remove matrix surface slushing oil, then the matrix of cleaning is put into loft drier inner drying, temperature is controlled at 60 ℃; Described cleaning and dry be continuous action, after cleaning, in 20s, carry out drying step, prevent that outside surface oxidation from can have a strong impact on the sticking power of DLC film; Then with preprocessing solution etching matrix surface in Ultrasonic Cleaners, carry out " pre-treatment " 60min, dry, in order to increase the nucleation density of diamond film deposition; Described preprocessing solution is: formulated by weight the ratio of 1:2:20 with Na2FeO4, potassium hydroxide, water; Open DLC coating apparatus, first pass into Ar and matrix is carried out to the pre-sputtering of 8min.Sputtering parameter is microwave source (ECR) power 800W, volts DS 1600V.After pre-sputtering, continue to vacuumize, vacuum tightness will reach 7.0 * 10
-4pa.Negative electrode adopts the metal titanium target that purity is 99.9%, passes into O
2the injection effect that utilizes the high bias voltage of pulse to produce with N, the first step is prepared NTi rete as prime coat, in order to control temperature, after the first layer, close heating power supply, intermittently 5min, and then starting outfit, pass into CH4 and H, control 150 ℃ of temperature <, adopt direct current (DC) bias on counterdie, to deposit DLC theca externa, deposition of diamond thin films is complete.
The quasi-diamond film coating medical surgical forceps that adopts technique of the present invention is without mould-growth: through Guangzhou electricity Measuring and testing company by GJB150.10-2009 military equipment envrionment test below seven kinds of bacterial classifications through 30 days cultivation results, be 0 grade (without mould-growth), it is mould that seven kinds of bacterial classifications are respectively terreus, paecilomyces varioti, aspergillus niger, penicillium funiculosum, viride, conspicuous green mould, short handle broom.
Fig. 2 amplifies the shape appearance figure of 5000 times for detecting sample surfaces under field emission electron scanning electron microscope.From detected result, can find out, sample surfaces has deposited the film of one deck densification.
As shown in Figure 3, as can be seen from the figure adopt the sticking power of the quasi-diamond film coating that the present invention makes to reach 37N, traditional film coating apparatus and equipment cannot be realized.
Claims (1)
1. a preparation technology for aseptic corrosion resistant quasi-diamond film coating medical surgical forceps, is characterized in that comprising the steps:
The first step: dismounting is decomposed: the apparatus joint of the operating forceps with joint, teeth groove, rill is opened, turn on screw, dismounting is decomposed, and in order to make the comprehensive covering of DLC film of deposition, prevents from leaving gap and dead angle and again corrodes and corrosion;
Second step: cleaning-drying, with raw spirit, clean and remove matrix surface slushing oil, then the matrix of cleaning is put into thermostatic drying chamber, at 1-2min inner drying, temperature is controlled at 50-60 ℃;
Described cleaning and dry be continuous action, after cleaning, in 10-30s, be dried, prevent that outside surface oxidation from can have a strong impact on the sticking power of DLC film;
The 3rd step: pre-treatment: carry out " pre-treatment " 50-60min with preprocessing solution etching matrix surface in Ultrasonic Cleaners, dry, in order to increase the nucleation density of diamond film deposition;
Described preprocessing solution is: use Na
2feO
4, potassium hydroxide, water is formulated by weight the ratio of 1:2:20;
The 4th step: ise cleans: first pass into Ar, C or H and matrix is carried out to the pre-sputtering of 6-8min;
Sputtering parameter is microwave source (ECR) power 800W, volts DS 1600V;
The 5th step: coating transition layer: ion bombardment etching continues to vacuumize after cleaning, and vacuum tightness will reach 7.0 * 10
-4pa, passes into N and O
2, negative electrode adopts the metal titanium target that purity is 99.9%, the injection effect that utilizes the high bias voltage of pulse to produce, deposition NO
2ti is transition rete (prime coat);
The 6th step: coating DLC work tunic: after the first layer, close the power supply of heating, intermittent time 5min, this is to make workpiece further cooling, makes next step DLC coating have very high sticking power;
And then unlatching cathode power, pass into H and CH
4, cathode targets is the graphite of purity 99.9%, adopts direct current (DC) bias, controls 150 ℃ of temperature <, at transition rete NO
2the upper deposition of the Ti DLC rete of working, diamond like carbon film deposition is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725830.6A CN103695857A (en) | 2013-12-25 | 2013-12-25 | Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725830.6A CN103695857A (en) | 2013-12-25 | 2013-12-25 | Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103695857A true CN103695857A (en) | 2014-04-02 |
Family
ID=50357515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310725830.6A Pending CN103695857A (en) | 2013-12-25 | 2013-12-25 | Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103695857A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104473675A (en) * | 2014-12-18 | 2015-04-01 | 常熟市亨利医疗器械有限公司 | Medical bending separating forceps |
| US20180202050A1 (en) * | 2015-07-10 | 2018-07-19 | Posco | Color-treated substrate and color treatment method therefor |
| CN111733383A (en) * | 2019-03-25 | 2020-10-02 | 陈远达 | Manufacturing process of sterile abrasion-resistant diamond-like composite coating medical scalpel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047556A (en) * | 2000-05-26 | 2002-02-15 | Japan Science & Technology Corp | Dlc film deposition method, and dlc coated aluminum alloy and dlc coated magnesium alloy using the method |
| US20090135521A1 (en) * | 2007-11-28 | 2009-05-28 | Sae Magnetics (H.K.) Ltd | Protective film forming method |
| CN101602273A (en) * | 2009-07-22 | 2009-12-16 | 天津南玻节能玻璃有限公司 | A kind of diamond-like carbon film-coating glass and preparation method thereof |
| CN101768720A (en) * | 2010-03-31 | 2010-07-07 | 西安交通大学 | Method for preparing amorphous carbon coating on surface of medical stainless steel knife saw |
| CN103160794A (en) * | 2011-12-16 | 2013-06-19 | 中国科学院兰州化学物理研究所 | Method for preparing diamond-like carbon film on carbon steel surface or nodular cast iron surface |
-
2013
- 2013-12-25 CN CN201310725830.6A patent/CN103695857A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047556A (en) * | 2000-05-26 | 2002-02-15 | Japan Science & Technology Corp | Dlc film deposition method, and dlc coated aluminum alloy and dlc coated magnesium alloy using the method |
| US20090135521A1 (en) * | 2007-11-28 | 2009-05-28 | Sae Magnetics (H.K.) Ltd | Protective film forming method |
| CN101602273A (en) * | 2009-07-22 | 2009-12-16 | 天津南玻节能玻璃有限公司 | A kind of diamond-like carbon film-coating glass and preparation method thereof |
| CN101768720A (en) * | 2010-03-31 | 2010-07-07 | 西安交通大学 | Method for preparing amorphous carbon coating on surface of medical stainless steel knife saw |
| CN103160794A (en) * | 2011-12-16 | 2013-06-19 | 中国科学院兰州化学物理研究所 | Method for preparing diamond-like carbon film on carbon steel surface or nodular cast iron surface |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104473675A (en) * | 2014-12-18 | 2015-04-01 | 常熟市亨利医疗器械有限公司 | Medical bending separating forceps |
| US20180202050A1 (en) * | 2015-07-10 | 2018-07-19 | Posco | Color-treated substrate and color treatment method therefor |
| CN111733383A (en) * | 2019-03-25 | 2020-10-02 | 陈远达 | Manufacturing process of sterile abrasion-resistant diamond-like composite coating medical scalpel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Antimicrobial property, cytocompatibility and corrosion resistance of Zn-doped ZrO2/TiO2 coatings on Ti6Al4V implants | |
| Yildiz et al. | Wear and corrosion behaviour of various surface treated medical grade titanium alloy in bio-simulated environment | |
| Liu et al. | A combined coating strategy based on atomic layer deposition for enhancement of corrosion resistance of AZ31 magnesium alloy | |
| CN104494229B (en) | A kind of antibacterial nanometer antiwear composite coating and preparation method thereof | |
| CN103695857A (en) | Preparation process for medical operating forceps with antibacterial and anticorrosive DLC (diamond-like carbon) film coating | |
| CN104195508A (en) | Method for preparing Cr/CrN/Cu-TiN film on surface of stainless steel operation instrument | |
| CN101555597A (en) | Preparation method for preparing titanium oxide bioactive coating on the surface of nitinol alloy | |
| Azem et al. | The corrosion and bioactivity behavior of SiC doped hydroxyapatite for dental applications | |
| US9353453B2 (en) | Metal substrate modified with silicon based biomimetic treatment having antibacterial property for the osteointegration thereof | |
| Kumar et al. | Biocorrosion and biological properties of sputtered ceramic carbide coatings for biomedical applications | |
| Kaliaraj et al. | Studies of calcium-precipitating oral bacterial adhesion on TiN, TiO 2 single layer, and TiN/TiO 2 multilayer-coated 316L SS | |
| CN107326336A (en) | Resistant amorphous carbon coating of antibacterial and preparation method thereof, antibacterial wear resistant appliance | |
| Karabudak et al. | An Investigation of Corrosion Resistance and Antibacterial Sensitivity Properties of Nano-Ag-Doped TiO 2 Coating and TiO 2 Coating Grown on NiTi Alloy with the Micro-Arc Oxidation Process | |
| Si et al. | A heterogeneous TiO2/SrTiO3 coating on titanium alloy with excellent photocatalytic antibacterial, osteogenesis and tribocorrosion properties | |
| Lan et al. | Promoting bone mesenchymal stem cells and inhibiting bacterial adhesion of acid-etched nanostructured titanium by ultraviolet functionalization | |
| CN101033535A (en) | Medical titanium alloy hip joint bulb surface carburization process | |
| Xing et al. | Polycaprolactone/ZnO coating on WE43 magnesium alloy combined with a MgO/MgCO3 transition layer for promoting anticorrosion and interfacial adhesion | |
| CN103526262A (en) | Method for performing surface modification on tantalum and tantalum alloy and electrolyte used in method | |
| CN102418131A (en) | Method for preparing titanite-containing ceramic coating on surface of pure titanium or titanium alloy | |
| Li et al. | Laser directed energy deposited, ultrafine-grained functional titanium-copper alloys tailored for marine environments: Antibacterial and anti-microbial corrosion studies | |
| WO2015154613A1 (en) | Surface modification method for polyether-ether-ketone material | |
| Li et al. | rBMSC and bacterial responses to isoelastic carbon fiber-reinforced poly (ether-ether-ketone) modified by zirconium implantation | |
| CN104371134B (en) | A kind of polyetheretherketonematerials materials of surface fluorination and preparation method thereof | |
| CN1736493A (en) | Method for preparing TiO2-HA biological medical nanometer structured film | |
| Liu et al. | Effect of N2 partial pressure on comprehensive properties of antibacterial TiN/Cu nanocomposite coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Yuanda Inventor after: Yang Zhongkai Inventor after: Wang Shengyun Inventor after: He Jing Inventor after: Yang Yi Inventor after: Shen Jun Inventor before: Chen Yuanda Inventor before: Wang Shengyun Inventor before: He Jing |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180515 Address after: 430040 Hubei Wuhan New Technology Development Zone, East Lake 999 Applicant after: WUHAN CENTURY ZHONGHANG SUPERPOWER DIAMOND FILM HIGH-TECH CO., LTD. Address before: 415200 Linli County Anfu Industrial Park, Changde, Hunan Applicant before: HUNAN ZHONGHANG SUPER DIAMOND FILM HIGH-TECH CO., LTD. |
|
| TA01 | Transfer of patent application right | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20190326 |
|
| AD01 | Patent right deemed abandoned |