WO1997033015A1 - Bain de placage d'alliage etain-argent et procede de production d'objets plaques au moyen de ce bain de placage - Google Patents
Bain de placage d'alliage etain-argent et procede de production d'objets plaques au moyen de ce bain de placage Download PDFInfo
- Publication number
- WO1997033015A1 WO1997033015A1 PCT/JP1997/000644 JP9700644W WO9733015A1 WO 1997033015 A1 WO1997033015 A1 WO 1997033015A1 JP 9700644 W JP9700644 W JP 9700644W WO 9733015 A1 WO9733015 A1 WO 9733015A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compound
- tin
- silver
- acid
- bismuth
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/60—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of tin
Definitions
- the present invention relates to a plating bath for forming a low melting point tin-silver alloy and a method for producing a plated product using the plating solution.
- Tin-silver alloys are regarded as promising alternatives to tin-lead solder alloys. Recently, the commercialization of tin-silver solder alloys has been announced by Matsushita Electric Industrial Co., Ltd. (Nikkei Industrial News February 1, 1996 Says).
- an alloy obtained by adding bismuth, mesh, etc. to a tin-silver alloy is a solder alloy having better properties such as solderability than a tin-silver alloy. It was required to provide a bath.
- the present invention provides a plating bath for producing a tin-silver alloy plating instead of a tin-lead alloy solder plating, which has no cyanide compound at all.
- the purpose is to: Disclosure of the invention
- pyrrolic acid compound a pyrrolic acid salt and a pyrrolic acid or a pyrrolic acid can be used.
- iodine compound iodide, iodate and / or iodine can be used.
- tin compound an inorganic acid or organic acid compound of tin can be used.
- an inorganic acid or organic acid compound of silver can be used as the silver compound.
- an inorganic acid or organic acid compound of bismuth can be used as the bismuth compound.
- the copper compound an inorganic acid or an organic acid compound of copper can be used.
- the addition amount of the pyrrolic acid compound and the iodine compound may be an amount necessary for tin, silver, bismuth and copper to exist as complex ions.
- electrolytic plating is performed on an object to be plated with a tin-silver alloy plating solution having the following five components (a) to (e) as a basic composition.
- a tin-silver alloy plating solution having the following five components (a) to (e) as a basic composition.
- a step of forming a resin film on the adherend a step of forming the resin film in a required pattern, and a step of forming the resin film of the pattern using the mask as a mask.
- Electrolytic plating is performed using a tin-silver alloy plating solution having (e) as a basic composition to form a tin-silver alloy plating portion.
- a photosensitive resin film is used as the resin film, and the photosensitive resin film can be formed in a required pattern by photolithography.
- Pyrrolinic acid and / or pyrrolic acid can be used as the above-mentioned pyrrolic acid compound.
- iodine compound iodide, iodate and / or iodine can be used.
- tin compound an inorganic acid or organic acid compound of tin can be used.
- an inorganic acid or organic acid compound of silver can be used as the silver compound.
- an inorganic or organic acid compound of bismuth is used. Can be used.
- the addition amount of the pyrrolic acid compound is such that in order to further stabilize the formed metal bilolinate complex ion, virolinate ion is added to the metal according to the coordination number of the metal. It is more effective to add more than twice the molar amount of pyrophosphate ion to tin and copper.
- pyrrolinic acid salts such as potassium pyrrolinate and sodium pyrrolinate, or pyrrolinic acid can be used alone or in combination.
- the addition amount of the iodine compound can be arbitrarily changed within a range in which silver and bismuth are stably present as a complex ion.
- the amount of the iodine compound (I—) Add so that the concentration is 0.5 m 01/1 or more.
- it is more effective to add 1.5 mo 1/1 or more as iodine ion (I—).
- iodine compounds include iodide such as iodide such as potassium iodide and sodium iodide, iodide such as potassium iodate and sodium iodate. Or two or more of them can be used in combination ⁇
- the tin compound to be added to the tin-silver alloy plating bath is not particularly limited-tin chloride, tin chloride dihydrate, tin sulfate, pylori
- the above-mentioned inorganic acids or organic acid tins such as acid, stannic acid and tin methanesulfonate can be used alone or in combination of two or more.
- the silver compound to be added to the tin-silver alloy plating bath is not particularly limited, and the above-mentioned inorganic acid or organic tin acid such as silver iodide, silver chloride, silver nitrate, silver sulfate, silver methanesulfonate, etc. Can be used alone or in combination of two or more.
- the bismuth compound to be added to the tin-silver alloy plating bath is particularly limited. Instead, bismuth inorganic or organic acid compounds such as bismuth chloride, bismuth iodide, and bismuth citrate can be used alone or in combination.
- the copper compound to be added to the above-mentioned tin-silver alloy plating bath is not particularly limited, and copper such as cuprous chloride, second chloride, copper sulfate, copper pyrophosphate, copper carbonate, and copper nitrate are used. Inorganic acids or organic acid compounds can be used alone or in combination.
- the mixing ratio of the silver compound and the tin compound to be mixed in the ⁇ -silver alloy plating bath can be arbitrarily changed. Also, the compounding ratio of one or more compounds selected from the group consisting of bismuth compounds and copper compounds can be arbitrarily changed. When forming a low melting point alloy, the mixing ratio of the tin compound in the plating bath should be larger than that of the other compounds.
- the pH of the plating bath can be arbitrarily adjusted by adding an acid such as pyrrolic acid / hydrochloric acid, or an alkali such as hydroxylated realm / sodium hydroxide. It is preferable to adjust the pH to a range of 5 to 10, but the pH can be adjusted arbitrarily as long as the plating bath does not decompose.
- a complexing agent In the tin-silver alloy plating bath, a complexing agent, a brightener, a surfactant and the like can be added in addition to the above components.
- Complexing agents include oxalate, tartrate, citrate, glycine, sulphite, thiosulphate and the like.
- Brighteners include peptone, / 5-naphthol, amide aldehyde, formaldehyde, acetoaldehyde, polyethylene glycol, methyl acrylate, salicylic acid, salicylic acid derivatives, N> '-Dimethylformamide, hexethyleneethylenetramin, malonic acid, etc. can be used alone or in combination.
- L-ascorbic acid, phenol, hydroquinone, resorcin and the like can be added alone or in combination as an antioxidant for tin.
- a surfactant sodium lauryl sulfate, polyoxyethylene nonyl phenyl ether, benzalcodium chloride or the like may be used alone or in combination. Can be added.
- any of the usual electroplating methods can be employed.
- a pulse plating method or a current reversal method may be used.
- plating may be performed at a constant current or a constant potential without or with stirring at a bath temperature of about 20 to 80.
- the anode for example, tin, silver, copper, a tin-silver alloy, a tin-silver alloy, a tin-silver-bismuth alloy, platinum, platinum-plated titanium, or carbon can be used.
- the material to be plated is not particularly limited, and any material that can be electroplated can be used.
- Example 1 shows the composition of the plating solution and the plating conditions. It can.
- Example 1 the composition of the plating solution and the plating conditions may be arbitrarily changed according to the above-described purpose. it can.
- a tin-silver-bismuth alloy plating bath having the above composition was prepared.
- the bath was clear and orange.
- the pH was adjusted to 4 by the addition of pyrrolic acid.
- This bath Te temperature 25 using, seedless ⁇ were plated pure copper substrate at a current density of 0.7 A / dm z.
- a tin-silver-bismuth alloy film of 83% tin, 3.5% silver, and 13.5% bismuth was obtained.
- solder wetting test for the obtained copper plate with tin-silver-bismuth alloy solder checker: Tinless force SAT 2000
- tin-silver solder 3.5wt% silver house owned
- temperature 250, 30% WW rosin or commercially available non-cleaning type flux A solder wettability test was performed under the application conditions, and as a result, good solder wettability was obtained without repelling the solder.
- a bath of tin-silver-copper alloy having the above composition was prepared. This bath was blue and transparent, and the pH was 9.0, and no change in appearance such as precipitation was observed after a 2-week standing test. Using this bath, a pure copper substrate was plated at a temperature of 25, without stirring, at a current density of 0.5 A / dm 2 and U / dm z . As a result, their respective current density 0.5A / dm z, 78% tin under the conditions of U / dm z, 18% silver, copper 4% and 94% tin, silver 5% copper 1% tin one silver cuprous An alloy film was obtained.
- solder-wet tester solder checker: (less force SAT200)
- the obtained tin-silver-copper alloy-plated copper sheet was tin-silver solder (3.5wt% silver house owned)
- Solder wettability test was performed under the conditions of 30% WW rosin or commercially available unwashed type flux with bath and temperature of 250. As a result, good solder wettability was obtained without repelling solder.
- the melting point of the tin-silver-copper alloy plating film having the composition shown in Table 1 was measured by a differential scanning calorimeter (DSC), and the melting temperature was 217 in each case.
- a photosensitive resin film (resist film) with a thickness of about 25 m is formed on a pure steel plate, and holes with a diameter of 100 // m are formed on the resist film by photolithography every 100 fm. A total of 250 pieces in length and 50 pieces in total were formed to expose the underlying copper plate. Using the plating bath described in Example 1 in this hole, the current density was 1.5 A / dm 2 , Stir, 25. Under a condition of C, a tin-silver-bismuth alloy plating was performed to a thickness of about 25 / m. After plating, the resist film was separated, and the plating (tin-silver-bismuth alloy-plated portion) was observed with an electron microscope.
- the plating was formed exactly according to the shape of the resist hole.
- the plating was made of an alloy of 83% tin, 3.5% silver, and 13.5% bismuth, and there was no variation in the thickness direction. Not possible ⁇ The resist film does not have to be photosensitive. In this case, the resist film is formed into a required pattern by laser processing such as excimer laser.
- a photosensitive resin film (resist film) with a thickness of about 25 im is formed on a pure copper plate, and holes of 100 / m in diameter are formed in the resist film by photolithography every 100 ⁇ m. A total of 250 pieces in length and 50 pieces in total were formed to expose the underlying steel plate.
- Nickel plating is first performed in this hole at a thickness of about 5 / m, and then a tin-silver-copper alloy is plated in the plating bath of Example 2 under the plating conditions shown in Example 2. Was. After plating, the resist film was peeled off, and the plated material was observed with an electron microscope.
- the plated material grew to a thickness greater than the thickness of the resist film, and the mushroom shape (the portion protruding above the resist film was the hole diameter).
- the mushroom-shaped plating was melted in a hydrogen atmosphere, and the appearance was again observed with an electron microscope.
- the result was a diameter of about 100 m and a height of 70 m.
- a product having a substantially hemispherical shape as a whole was obtained.
- a cross-sectional analysis of this hemispherical shape using an electron beam analyzer revealed that tin, silver, and copper were uniformly distributed in the hemispherical shape.
- the resist film need not be photosensitive.
- the resist film can be formed into a required pattern by laser processing such as an excimer laser.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69713844T DE69713844T2 (de) | 1996-03-04 | 1997-03-03 | Zinn-silber-beschichtungsbad und damit beschichtete objekte |
US08/945,793 US5948235A (en) | 1996-03-04 | 1997-03-03 | Tin-silver alloy plating bath and process for producing plated object using the plating bath |
EP97903650A EP0829557B1 (en) | 1996-03-04 | 1997-03-03 | Tin-silver alloy plating bath and process for producing plated object using the plating bath |
AU18133/97A AU1813397A (en) | 1996-03-04 | 1997-03-03 | Tin-silver alloy plating bath and process for producing plated object using the plating bath |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7511596 | 1996-03-04 | ||
JP8/75115 | 1996-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997033015A1 true WO1997033015A1 (fr) | 1997-09-12 |
Family
ID=13566875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/000644 WO1997033015A1 (fr) | 1996-03-04 | 1997-03-03 | Bain de placage d'alliage etain-argent et procede de production d'objets plaques au moyen de ce bain de placage |
Country Status (6)
Country | Link |
---|---|
US (1) | US5948235A (ja) |
EP (1) | EP0829557B1 (ja) |
KR (1) | KR100435608B1 (ja) |
AU (1) | AU1813397A (ja) |
DE (1) | DE69713844T2 (ja) |
WO (1) | WO1997033015A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6210556B1 (en) | 1998-02-12 | 2001-04-03 | Learonal, Inc. | Electrolyte and tin-silver electroplating process |
US6508927B2 (en) * | 1998-11-05 | 2003-01-21 | C. Uyemura & Co., Ltd. | Tin-copper alloy electroplating bath |
JP3298537B2 (ja) | 1999-02-12 | 2002-07-02 | 株式会社村田製作所 | Sn−Bi合金めっき浴、およびこれを使用するめっき方法 |
JP3492554B2 (ja) | 1999-05-07 | 2004-02-03 | ニシハラ理工株式会社 | Pbに代わる接合材料の機能合金メッキ及びその機能合金メッキを施した被実装用電子部品材料 |
JP3433291B2 (ja) * | 1999-09-27 | 2003-08-04 | 石原薬品株式会社 | スズ−銅含有合金メッキ浴、スズ−銅含有合金メッキ方法及びスズ−銅含有合金メッキ皮膜が形成された物品 |
JP2001181889A (ja) * | 1999-12-22 | 2001-07-03 | Nippon Macdermid Kk | 光沢錫−銅合金電気めっき浴 |
DE10014852A1 (de) * | 2000-03-24 | 2001-09-27 | Enthone Omi Deutschland Gmbh | Verfahren zur Abscheidung einer Silber-Zinn-Legierung |
US7628903B1 (en) * | 2000-05-02 | 2009-12-08 | Ishihara Chemical Co., Ltd. | Silver and silver alloy plating bath |
DE10025106A1 (de) * | 2000-05-20 | 2001-11-22 | Stolberger Metallwerke Gmbh | Elektrisch leitfähiges Metallband und Steckverbinder hieraus |
US6924044B2 (en) * | 2001-08-14 | 2005-08-02 | Snag, Llc | Tin-silver coatings |
US7122108B2 (en) * | 2001-10-24 | 2006-10-17 | Shipley Company, L.L.C. | Tin-silver electrolyte |
US20040007469A1 (en) * | 2002-05-07 | 2004-01-15 | Memgen Corporation | Selective electrochemical deposition methods using pyrophosphate copper plating baths containing ammonium salts, citrate salts and/or selenium oxide |
JP3961381B2 (ja) * | 2002-09-19 | 2007-08-22 | 株式会社共立 | 内燃エンジン用シリンダ及びその内周面処理方法 |
US20070037005A1 (en) * | 2003-04-11 | 2007-02-15 | Rohm And Haas Electronic Materials Llc | Tin-silver electrolyte |
US20050085062A1 (en) * | 2003-10-15 | 2005-04-21 | Semitool, Inc. | Processes and tools for forming lead-free alloy solder precursors |
KR100698662B1 (ko) * | 2003-12-02 | 2007-03-23 | 에프씨엠 가부시끼가이샤 | 주석-은-구리 3원합금으로 이루어지는 표면을 형성한단자, 그것을 갖는 부품 및 제품 |
US20080308300A1 (en) * | 2007-06-18 | 2008-12-18 | Conti Mark A | Method of manufacturing electrically conductive strips |
CN102517615A (zh) * | 2011-12-19 | 2012-06-27 | 张家港舒马克电梯安装维修服务有限公司镀锌分公司 | 一种Sn-Ag合金电镀液 |
KR101596437B1 (ko) * | 2014-04-25 | 2016-03-08 | 주식회사 에이피씨티 | 플립칩 패키지 구리 필라의 제조 방법과 이를 위한 동계 전기도금액 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS543142B2 (ja) * | 1972-06-16 | 1979-02-19 | ||
JPS543810B2 (ja) * | 1972-06-21 | 1979-02-27 | ||
JPS6219520B2 (ja) * | 1983-07-23 | 1987-04-28 | Kumamotoken |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU406950A1 (ru) * | 1971-09-06 | 1973-11-21 | Способ электролитического осаждения сплава серебро- кобальт | |
US6001289A (en) * | 1991-12-04 | 1999-12-14 | Materials Innovation, Inc. | Acid assisted cold welding and intermetallic formation |
JP3274232B2 (ja) * | 1993-06-01 | 2002-04-15 | ディップソール株式会社 | 錫−ビスマス合金めっき浴及びそれを使用するめっき方法 |
JP3481020B2 (ja) * | 1995-09-07 | 2003-12-22 | ディップソール株式会社 | Sn−Bi系合金めっき浴 |
-
1997
- 1997-03-03 AU AU18133/97A patent/AU1813397A/en not_active Abandoned
- 1997-03-03 WO PCT/JP1997/000644 patent/WO1997033015A1/ja active IP Right Grant
- 1997-03-03 EP EP97903650A patent/EP0829557B1/en not_active Expired - Lifetime
- 1997-03-03 DE DE69713844T patent/DE69713844T2/de not_active Expired - Fee Related
- 1997-03-03 US US08/945,793 patent/US5948235A/en not_active Expired - Fee Related
- 1997-03-03 KR KR1019970707785A patent/KR100435608B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS543142B2 (ja) * | 1972-06-16 | 1979-02-19 | ||
JPS543810B2 (ja) * | 1972-06-21 | 1979-02-27 | ||
JPS6219520B2 (ja) * | 1983-07-23 | 1987-04-28 | Kumamotoken |
Non-Patent Citations (2)
Title |
---|
KIYOSHI MARUYAMA et al., "Functional Plating", INDUSTRIAL DAILY NEWS CO., LTD., TOKYO, 28 February 1984, p. 185-188. * |
See also references of EP0829557A4 * |
Also Published As
Publication number | Publication date |
---|---|
US5948235A (en) | 1999-09-07 |
EP0829557B1 (en) | 2002-07-10 |
KR19990008259A (ko) | 1999-01-25 |
KR100435608B1 (ko) | 2004-09-30 |
AU1813397A (en) | 1997-09-22 |
EP0829557A1 (en) | 1998-03-18 |
DE69713844D1 (de) | 2002-08-14 |
DE69713844T2 (de) | 2003-01-16 |
EP0829557A4 (en) | 1999-06-16 |
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