WO2005080634A1 - メッキ膜形成方法、電磁波シールド材および筐体 - Google Patents
メッキ膜形成方法、電磁波シールド材および筐体 Download PDFInfo
- Publication number
- WO2005080634A1 WO2005080634A1 PCT/JP2005/003227 JP2005003227W WO2005080634A1 WO 2005080634 A1 WO2005080634 A1 WO 2005080634A1 JP 2005003227 W JP2005003227 W JP 2005003227W WO 2005080634 A1 WO2005080634 A1 WO 2005080634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- plating film
- copper
- forming
- housing
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/2006—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30
- C23C18/2046—Pretreatment of the material to be coated of organic surfaces, e.g. resins by other methods than those of C23C18/22 - C23C18/30 by chemical pretreatment
- C23C18/2073—Multistep pretreatment
- C23C18/2086—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/28—Sensitising or activating
- C23C18/30—Activating or accelerating or sensitising with palladium or other noble metal
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12882—Cu-base component alternative to Ag-, Au-, or Ni-base component
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/32—Composite [nonstructural laminate] of inorganic material having metal-compound-containing layer and having defined magnetic layer
Definitions
- the present invention relates to a method for forming a plating film, an electromagnetic wave shield material and a shadow, and more particularly to a method for forming a plating film for shielding electromagnetic waves, an electromagnetic wave shielding material, and a housing.
- Electromagnetic wave shielding techniques other than the plating method include, for example, a metal plate attaching method in which a metal plate is attached to a housing surface, and a conductive paint method in which a conductive paint is applied to the housing surface.
- the metal plate attachment method is not suitable for the housing of electronic devices with complicated and various shapes, and sufficient shielding properties (electromagnetic wave shielding effect) can be obtained with the carbon-based paint used for the conductive paint method. There is a problem of not being able to see.
- a metal film having a high shielding property such as copper can be formed on the casing surface of an arbitrary shape.
- the plating method can be broadly classified into an electric plating method, a displacement plating method, and an electroless plating method. Among them, the electroless plating method has few pinholes and can form a metal film with a uniform thickness even for various complicated shapes. Method (see, for example, Patent Document 1).
- Patent Literature 1 and Patent Literature 2 have been disclosed as techniques for forming an electromagnetic wave shielding material by forming a copper coating on the surface of a synthetic resin by an electroless plating method.
- the contents of the prior art disclosed in Patent Document 1 and the like will be outlined with reference to FIG.
- a member 10 made of a non-conductive member such as a synthetic resin is degreased and washed (step 10).
- the degreasing and washing are performed, for example, by dipping in an aqueous solution containing sodium borate, sodium phosphate, and a surfactant.
- a primer paint 20 is applied to the member 10 (step 20).
- the primer paint 20 serves as a binder for the member 10 and the electroless copper plating.
- the primer paint 20 is a paint in which metal particles such as nickel and iron are dispersed and contained in an acrylic urethane or epoxy paint.
- the members 1 0 coated with primer paint 2 for example, by immersed in an acidic solution of palladium chloride to form a catalyst layer of palladium 3 0 (Step 3 0) 0
- the member 10 covered with the palladium 30 catalyst layer is crushed by an electroless copper plating solution containing copper sulfate or the like.
- copper is deposited on the surfaces of the nickel and iron particles contained in the primer paint 20 using palladium 30 as a catalyst, and a copper plating film 40 is formed (step 40).
- copper has high conductivity and the copper plating film 40 exhibits a good shielding effect.
- copper has a tendency to oxidize. Copper oxide becomes a dielectric (non-conductive). For this reason, when the copper plating film 40 is partially oxidized, the oxidized portion becomes a dielectric and forms a slot antenna. As a result, electromagnetic waves are radiated from the oxidized portion to the outside, and the shielding effect of the copper plating film is reduced.
- This second metal layer cannot be formed directly on the copper plating film 40 (see Patent Document 1). Therefore, prior to the plating of the second metal layer, the catalyst layer made of palladium 30 is formed by immersing the member 10 coated with the copper plating film 40 in, for example, a liquid containing palladium 30. (Step 50).
- step 60 Thereafter, it is immersed in an electroless nickel plating solution containing nickel sulfate or the like to form a nickel plating film 50 (step 60).
- a copper plating film 40 for the purpose of shielding electromagnetic waves and a ninkel plating film 50 for the purpose of preventing oxidation of copper are formed on the surface of the member 10 made of synthetic resin.
- Patent Document 2 instead of the nickel plating process (steps 40 and 50) for preventing oxidation of copper, a chromate treatment is performed on the copper plating film 40. Thus, there is disclosed a technique for obtaining an antioxidant (prevention) effect on copper.
- a protective film made of a chromic acid film is formed on the copper plating film 40 by chromate treatment, and a 1.2.3 benzotriazole coating organic film is further formed to form the copper plating film 4. This is to obtain a zero protection effect.
- Patent Document 3 discloses a protective agent containing a hydroxyphenylbenzotriazole-based copolymer as an active ingredient, and a method for preventing metals using the same.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2-228098
- Patent Document 2 Japanese Patent No. 263991
- Patent Document 3 International Publication No. WO 03/093 5 3 4 A 1 Pan fret
- the present invention has been made in view of the above-described circumstances, and provides a plating film forming method, an electromagnetic wave shielding material, and a housing that can simplify a plating process.
- the method for forming a plating film according to the present invention includes, as described in claim 1, a step of degreasing and washing a surface of a member made of a synthetic resin material, in order to solve the above-mentioned problem.
- the method is characterized in that the plating film is formed in the following order: a step of applying a primer paint containing the same, a step of forming a copper plating film by an electroless plating method, and a step of forming a heat-resistant agent film by benzotriazole treatment. Is what you do.
- an electromagnetic wave shielding material comprising: a member made of a synthetic resin material; and a catalyst coated on a surface of the member.
- the housing according to the present invention includes, as described in claim 5, a housing member made of a synthetic resin material and a surface of the housing member.
- a primer coating containing the coated catalyst; and an electroless coating on the primer coating is characterized by comprising a copper plating film formed by a plating method, and a benzotriazole treatment formed on the copper plating film.
- the electromagnetic wave shielding material and the housing According to the plating film forming method, the electromagnetic wave shielding material and the housing according to the present invention, it is possible to provide a plating film forming method, an electromagnetic wave shielding material and a housing in which the plating process is simplified.
- FIG. 1 is a view schematically showing a cross section of a part of a housing according to the present invention.
- FIG. 2 is an explanatory view of a method for forming a copper plating film and an electromagnetic wave shielding material according to the present invention.
- FIG. 3 is a process chart showing a method for forming a copper plating film according to the present invention.
- FIG. 4 is an explanatory view showing a method of forming a copper plating film by a conventional method.
- FIG. 1 is a schematic cross-sectional view of a part of a casing 100 according to the present invention.
- the casing 100 is formed by molding a member 1 made of a synthetic resin, and then applying an electromagnetic wave shield. The intended surface treatment is applied.
- the inner surface 1A of the housing 100 is covered with a coating mainly composed of a copper plating film on the surface of the member 1.
- the outer surface 1B of the housing 100 is covered with a coating mainly composed of a copper plating film.
- the outer surface 1B may be coated with an external coating instead of a coating mainly composed of copper. Copper has excellent conductivity, and the copper plating film has a good electromagnetic wave shielding effect. For this reason, the housing 100 can suppress radiation of the electromagnetic waves generated by the electronic device to the outside of the housing 100 even when the electronic device is housed inside.
- the synthetic resin constituting the member 1 is not particularly limited, but for example, an ABS (Atari port-trile-butadiene-styrene) resin, a polyester resin, a polycarbonate resin, a polyurethane resin, a polypropylene resin, etc. are suitable for molding. .
- the size and shape of the housing 100 take various forms depending on the electronic devices and the like housed inside.
- step 1 the member 1 is degreased and washed to remove oils and fats, fingerprints, and the like slightly adhering to the surface of the member 1.
- Degreasing and washing can be performed by a general method.
- sodium borate is about 2 to 5 WZ V%
- sodium phosphate is about 2 to 5 W / V%
- surfactant is about 0.2 to 5 WZ V%.
- Using a washing solution containing 2 WZ V% wash at about 40 to 60 ° C for about 3 to 10 minutes, and wash with water.
- step 2 the primer paint 2 is applied to the member 1.
- the primer paint 2 plays a role as a binder between the member 1 and the electroless copper plating.By adding a catalyst to an organic allylic urethane or epoxy resin, the primer paint 2 has the property of increasing the reactivity of copper. Have.
- Primer paint 2 is applied to a thickness of about 2 to 8 ⁇ m. Thereafter, the primer paint 2 is dried to form a film of the primer paint 2.
- a copper plating film is formed on the primer paint 2 by an electroless copper plating method.
- the electroless copper plating itself can be performed by a general method.
- the member 1 coated with the primer paint 2 is degreased and washed in the same manner as in the step 1, and then washed with water. Then, it is immersed in a copper plating solution at about 20 to 60 ° C.
- the immersion time depends on the desired thickness of the copper plating film, but is, for example, 10 to 60 minutes.
- a rust preventive film 4 is formed on the copper plating film by benzotriazole treatment.
- the benzotriazole treatment is performed, for example, by immersing the member 1 on which the copper plating film is formed in a solution of a chemical containing a benzotriazole compound as a main component.
- Benzotriazole-based compounds generally exhibit a protective effect on metals, and particularly exhibit a high protective effect on copper or copper alloys.
- a copper plating film having a heat-proof effect on the member 1 is formed in a step (steps 1 to 4) that is simplified as compared with the conventional step (see FIG. 4). be able to.
- a copper plating film for shielding electromagnetic waves is formed on the member 1 made of synthetic resin, and the copper plating film is covered with the electromagnetic wave shielding material 4 Shielding material 5 can be obtained.
- the present invention has been made in view of the above-described circumstances, and provides a plating film forming method, an electromagnetic wave shielding material, and a housing that can simplify a plating process.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemically Coating (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-048371 | 2004-02-24 | ||
| JP2004048371A JP2005240073A (ja) | 2004-02-24 | 2004-02-24 | メッキ膜形成方法、電磁波シールド材および筐体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005080634A1 true WO2005080634A1 (ja) | 2005-09-01 |
Family
ID=34879508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/003227 Ceased WO2005080634A1 (ja) | 2004-02-24 | 2005-02-21 | メッキ膜形成方法、電磁波シールド材および筐体 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070048525A1 (ja) |
| JP (1) | JP2005240073A (ja) |
| CN (1) | CN1954096A (ja) |
| WO (1) | WO2005080634A1 (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5441453B2 (ja) * | 2009-03-11 | 2014-03-12 | アキレス株式会社 | めっき下地層を形成する下地塗料、それを用いる筐体の製造方法及びそれにより製造される筐体 |
| JP6631806B2 (ja) * | 2014-07-30 | 2020-01-15 | 日産化学株式会社 | ハイパーブランチポリマー、金属微粒子及び樹脂プライマーを含む無電解めっき下地剤 |
| CN116393346A (zh) * | 2023-04-10 | 2023-07-07 | 四川九洲电器集团有限责任公司 | 一种基于轻量化产品的导电涂料喷涂方法 |
| JP2025068847A (ja) | 2023-10-17 | 2025-04-30 | 株式会社ニッキ | スロットルの電子制御方法及び電子制御スロットル装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148661A (ja) * | 1991-11-28 | 1993-06-15 | C Uyemura & Co Ltd | 無電解銅めつき浴 |
| JPH11293472A (ja) * | 1998-04-09 | 1999-10-26 | Shipley Far East Kk | ポリプロピレン樹脂及びその製造方法並びにそのための触媒組成物 |
| JP2001011643A (ja) * | 1999-06-25 | 2001-01-16 | Inoac Corp | 不導体のめっき方法 |
| WO2003093534A1 (fr) * | 2002-05-01 | 2003-11-13 | Otsuka Chemical Co., Ltd. | Antirouilles et procede de protection antirouille a l'aide de ces derniers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3355432A (en) * | 1965-06-07 | 1967-11-28 | Diamond Alkali Co | Polymerization of trioxane and norbornadiene |
| US4303568A (en) * | 1979-12-10 | 1981-12-01 | Betz Laboratories, Inc. | Corrosion inhibition treatments and method |
| JPS59227448A (ja) * | 1983-06-08 | 1984-12-20 | 株式会社村田製作所 | 金属の腐食防止構造 |
| US4642221A (en) * | 1983-07-05 | 1987-02-10 | Atlantic Richfield Company | Method and composition for inhibiting corrosion in aqueous heat transfer systems |
-
2004
- 2004-02-24 JP JP2004048371A patent/JP2005240073A/ja active Pending
-
2005
- 2005-02-21 WO PCT/JP2005/003227 patent/WO2005080634A1/ja not_active Ceased
- 2005-02-21 CN CNA2005800057831A patent/CN1954096A/zh active Pending
-
2006
- 2006-08-24 US US11/509,038 patent/US20070048525A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148661A (ja) * | 1991-11-28 | 1993-06-15 | C Uyemura & Co Ltd | 無電解銅めつき浴 |
| JPH11293472A (ja) * | 1998-04-09 | 1999-10-26 | Shipley Far East Kk | ポリプロピレン樹脂及びその製造方法並びにそのための触媒組成物 |
| JP2001011643A (ja) * | 1999-06-25 | 2001-01-16 | Inoac Corp | 不導体のめっき方法 |
| WO2003093534A1 (fr) * | 2002-05-01 | 2003-11-13 | Otsuka Chemical Co., Ltd. | Antirouilles et procede de protection antirouille a l'aide de ces derniers |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070048525A1 (en) | 2007-03-01 |
| JP2005240073A (ja) | 2005-09-08 |
| CN1954096A (zh) | 2007-04-25 |
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