WO2006068046A1 - 電気スズおよびスズ合金めっき液 - Google Patents
電気スズおよびスズ合金めっき液 Download PDFInfo
- Publication number
- WO2006068046A1 WO2006068046A1 PCT/JP2005/023139 JP2005023139W WO2006068046A1 WO 2006068046 A1 WO2006068046 A1 WO 2006068046A1 JP 2005023139 W JP2005023139 W JP 2005023139W WO 2006068046 A1 WO2006068046 A1 WO 2006068046A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tin
- plating
- group
- imidazole
- integer
- 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
- 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
- C25D3/30—Electroplating: Baths therefor from solutions of tin
- C25D3/32—Electroplating: Baths therefor from solutions of tin characterised by the organic bath constituents used
-
- 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 an electrolytic tin plating solution and an electrolytic tin alloy plating solution.
- the first object of the present invention is to improve the solderability of the electro tin plating and the electro tin alloy plating and to increase the reliability after soldering. Also, a means for solving the problem which is conventionally considered to improve the plating speed and the appearance after plating
- R 2 and R 3 each represent hydrogen, a biel group, or an alkyl group having 1 to 20 carbon atoms, and R and R 3 may form an aromatic ring;
- R 4 represents hydrogen, a vinyl group, An alkyl group having 1 to 20 carbon atoms, a phenyl group, or one (CH 2 CH (R 5 ) 0) H
- R 5 is hydrogen
- An alkyl group having 1 to 20 carbon atoms X represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or a substituent which may contain N, O, m is an integer of 0 to 20, n, 1 is : An integer of 3 and k represents an integer of 1 to 20. )
- R 2 and R each represent hydrogen, a biel group, or an alkyl group having 1 to 20 carbon atoms, and R 2 and R 3 may form an aromatic ring, and R 4 may be hydrogen, a vinyl group or carbon 1 to 20 alkyl group, phenyl group, or one (CH 2 CH 2 (R 5 ) 0) H
- R 5 is hydrogen, an alkyl group having 1 to 20 carbon atoms
- X is hydrogen, an alkyl group having 1 to 6 carbon atoms
- N N
- O represents a substituent which may be contained
- m is an integer of 0 to 20
- n 1 is an integer of:! To 3
- k represents an integer of:! To 20.
- the use of the electrolytic tin plating solution and the electrolytic tin alloy plating solution of the present invention makes it possible to improve the solderability and the appearance of the soldered object.
- the plating rate can also be improved by using the plating solution of the present invention.
- the electro-tin plating solution and the electro-tin alloy plating solution of the present invention can basically use the electro-tin plating solution or the electro-tin alloy plating solution which has been conventionally studied, and A specific imidazole alcohol compound is added.
- a tin salt as a plating film metal component or a tin salt and a metal salt that forms an alloy with tin and a metal salt stabilizer
- tin is a divalent metal And stabilizers (prevents becoming tetravalent), brighteners (smoothing agents, prevention of abnormal precipitation), conductive salts, pH adjusters, etc.
- a tin salt to be a plating film metal component and a metal salt forming an alloy with tin for example, as a tin salt, tin sulfate, tin chloride, tin sulfamate, tin methanesulfonate and the like can be used. It can be illustrated. Further, as a metal forming an alloy with tin, for example, zinc, indium, bismuth, gold, silver, copper, nickel and the like can be exemplified, and as a salt, a salt similar to tin can be used.
- the concentration of tin salt in the electrolytic tin plating solution is preferably 1 to 60 g / L as metal.
- the tin salt with the above concentration and gold forming an alloy with tin It is preferable to contain 0.01 to 50 g / L of a genus salt as a metal.
- the metal salt stabilizer basically has a function of preventing oxidation of tin, and ascorbic acid, erythorbic acid, polyhydric phenol, hypophosphite and the like can be used.
- the metal salt stabilizer is preferably contained in an amount of 1 to 50 g / L when hypophosphite is used, and in another case of 0 ⁇ 05 to 10 g / L.
- the brightener polyacrylamide and derivatives thereof, polyethylene glycol, triethanolamine and derivatives thereof and the like can be used.
- the brightening agent is preferably contained in an amount of 0.01 to 10 g / L in the plating solution.
- Examples of conductive salts include methanesulfonic acid and its salts, sulfamic acid and its salts, hydrochloric acid and its salts, sulfuric acid and its salts, and the like.
- the conductive salt is preferably contained in an amount of 5 to 300 g / L in the plating solution.
- pH adjusters examples include sodium hydroxide, potassium hydroxide, ammonia, hydrochloric acid, sulfuric acid and the like.
- the complexing agent may include malic acid, citric acid, dalconic acid, lactic acid, succinic acid, ethanethiol, thiourea, ethylenediamine tetraacetic acid and the like.
- the complexing agent is preferably contained in an amount of 0.05 to 100 g / L.
- one or two or more compounds each having an imidazole group and a hydroxyl group in one molecule are added to the above-mentioned base solution of electro-tin plating or base solution of electro-tin alloy.
- the complexing agent and the compound having an imidazole group and a hydroxyl group in one molecule may be mixed in advance and added.
- one or two or more compounds having an imidazole group and a hydroxyl group in one molecule are added to the above-described conventional electric tin plating solution and electric tin alloy plating solution. It is important to use This makes it possible to improve the solder wettability and appearance of the electro-tin plated product and the electro-tin alloy plated product, and also improve the plating speed.
- the compound having an imidazole group and a hydroxyl group in one molecule for use in the present invention is preferably synthesized by the reaction represented by the following reaction formula (4).
- R 1 R 2 , R 3 and R 4 in the above general formulas (1) to (3) are hydrogen, Biel group, or an alkyl group having 1 to 20 carbon atoms, the effects of the present invention can be sufficiently achieved. Demonstrate. As an alkyl group, although it is C1-C20, 1-9 are preferable. When R 2 and R 3 form an aromatic ring, the aromatic ring to be formed is preferably a benzene ring.
- X is a substituent which may contain hydrogen, an alkyl group having 1 to 6 carbon atoms, or N, ⁇ , and as the alkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 4 carbon atoms is preferable. Preferred examples of the substituent containing N and O include a hydroxyl group, a carboxyl group and an amino group.
- R 4 is a phenyl group, (CH C
- Preferred imidazole compounds represented by the above general formula (2) are imidazole, 2 alkyl imidazole, 2,4 dialkyl imidazole, 4 vinyl imidazole and the like. Bound to the imidazole group! When ⁇ ⁇ is an alkyl group, if the carbon number is 10 or more, the hydrophobicity is enhanced and the wettability of the covering material may be reduced to lower the properties. In these cases, the preferred carbon number is 1 to 9 Among these, particularly preferred are imidazole and 2-methylimidazole.
- the epoxy compound represented by the general formula (3) includes epoxypropanol, epoxybutanol, epoxypentanol, epoxyhexanol, methoxyglycidol, n butoxyglycidol, tert-butoxyglycidol, phenoxiglycidol,
- Epoxy compounds having alkylene oxides such as ethylene oxide adducts of sidol can be listed.
- the reaction may be carried out by dropping an epoxy compound at a molar ratio of 0.:! To 10 moles to an imidazole compound heated to a temperature of 80 to 200 ° C, and a reaction time of about 5 minutes to 3 hours. It is enough.
- This reaction does not particularly require a solvent, but it is preferable to use an organic solvent such as chloroform, dioxane, methanol or ethanol as the reaction solvent. Since this reaction is averse to moisture, it is preferable to carry out the reaction in an atmosphere of a moisture-free gas such as dried nitrogen and argon so that moisture is not mixed.
- the amount of addition of one or two or more compounds having an imidazole group and a hydroxyl group in one molecule to a plating solution is preferably from 0. Olg / L to: OgZL, more preferably Is between 0. lg / L and 5 gZL.
- the addition amount When the addition amount is too small, the plating does not become semi-glossy, resulting in rough plating. In addition, since the improvement of the cathode current efficiency is not observed, the plating speed is slow, and the improvement effect of the solderability can not be obtained. In addition, when the addition amount is excessive, the plating rate is lowered, and the physical properties (oxidation resistance, solderability, soldering strength, etc.) are deteriorated due to the bite of the additive into the film, and in the case of a large excess, no plating occurs Occur.
- the plating temperature is 10 ° C. to 50 ° C., preferably, 20 ° C. force and 45 ° C.
- the pH value of the plating solution may be in the strongly acidic to neutral range.
- the force used in the range of pH 2 to ⁇ 6 ⁇ 5 is not particularly limited to this.
- the current density of the electroplate can be electroplated under the conditions of 0.1. 1 AZdm 2 to 30 A / dm 2 , particularly 1 AZd m 2 to 15 A / dm 2 .
- any of barrel plating, rack plating, hoop plating and the like can be applied.
- the imidazole alcohols 2 and 3 shown below were also synthesized in the same manner as in the above synthesis method such that the molar ratio of the imidazole compound to the epoxy compound was 1: 1.
- Imidazo alcohol 3 A plating test was carried out by adding the imidazole alcohol compound of the above structure to a tin plating base solution or a tin alloy plating base solution.
- the liquid of the following composition was used as the base liquid of the electric tin alloy plating liquid.
- Zinc 15 g / L (added as sulfonate, but added as zinc metal)
- Plating was performed using a 3 dm 3 beaker with a tin plate with anode back (150 x 150 x thickness 10 mm) as an anode and stirring with a stirrer (rotor 50 mm, 300 rpm).
- the cathode used a 10 ⁇ 25 mm copper plate and oscillated the force sword with a stroke length of 60 mm and 24 ⁇ ⁇ ⁇ ⁇ .
- the plating temperature is 35 ° C.
- the plating rate was measured by using a cathode current density of 2, 3, 5, and lOAZdm 2 by plating, by a weight method and a fluorescent X-ray film thickness measurement method.
- the evaluation of the solderability was carried out with a cathode current density of 5 AZ dm 2 and plating, and a film thickness of 5 ⁇ m.
- pretreatment for the soldering test As a pretreatment for the soldering test, it is treated with a temperature of 105 ° C with 100% humidity condition (hereinafter referred to as PCT) for 4 or 16 hours as a pretreatment for soldering test, or a reflow treatment with a total treatment time of 3 minutes, a preheating 160 ° C, Heating 230 ° C. reflow was performed.
- PCT 100% humidity condition
- a reflow treatment with a total treatment time of 3 minutes a preheating 160 ° C, Heating 230 ° C. reflow was performed.
- the soldering test was conducted by the meniscograph method.
- the flux is NA-200 (Tamura Kaken Co., Ltd.), and it is free from tin, silver, silver, copper and lead free, at a temperature of 240 ° C, with a dip depth of 2 mm, and with a dip speed of 2 mm / sec. I measured the time. The results are shown in Table 5 for solder speed and Table 7 for solderability.
- Plating was conducted in the same manner as in Example 1 using a plating solution by adding 3 g / L of the imidazole alcohol compound 2 to the composition shown in Table 2 above, plating speed, solderability, I confirmed the flow. In addition, the density of the crystals of the plated film was measured by an electron microscope.
- the evaluation of the reflowability was carried out by placing a tin-zinc plated test piece on an aluminum plate (0.3 mm thickness, 1020 material) and performing reflow on a hot plate.
- the reflow temperature was 230 ° C. ⁇ 5 ° C., and the reflow time was 30 seconds.
- Tin 15 g / L (added as Snolephonate, but added as tin metal)
- Zinc 15 g / L (Modified as sulfonate, but added as zinc metal)
- Plating was carried out using a plating solution prepared by adding 1 gZL of the imidazole alcohol compound 1 to the composition (pH 4.0) shown in Table 3 above, and the plating rate and the solderability were confirmed.
- the plating was carried out at a cathode current density of 2, 3, 5, 10 A / dm 2 as in Example 1 on a connector part (made of brass) having a base nickel plating thickness of 1 ⁇ m.
- the plating rate was measured.
- the solderability was measured and evaluated in the same manner as in Example 1 except that the cathode current density was 10 A / dm 2 and the plating film thickness was 2 / m.
- the plating conditions were the same as in Example 1 except that the liquid amount was 3 L, the plating temperature was 35 ° C., the plating time was 50 minutes, and the rotation speed was 10 rpm. Further, the plating rate and the solderability were measured and evaluated in the same manner as in Example 1.
- the plating was performed in the same manner as in Example 3 using a plating solution prepared by adding 1 ⁇ g / L of imidazole alcohol compound 1 to the composition ( ⁇ 4 ⁇ 4) shown in Table 41 above, plating speed, solder We confirmed the risk of damage. Also, the compactness of the crystals in the electron microscope was measured.
- the plating was performed in the same manner as in Example 3 using a plating solution obtained by adding 0.5 g / L of imidazole alcohol compound 2 to the composition (pH 4.0) shown in Table 4-1 above, plating rate, solder I confirmed the stickiness.
- the plating was performed in the same manner as in Example 3 using a plating solution in which 0.5 g / L of imidazole alcohol compound 3 was added to the composition (pH 4.0) shown in Table 4.1 above, plating rate, and soldering. I confirmed the sex.
- composition shown in Table 4-1 was added with 3 g of imidazole alcohol compound 1 by ZL, and plating was performed in the same manner as in Example 1 using a plating solution, and the plating rate and solderability were confirmed.
- the plating was performed in the same manner as in Example 1 and Example 3 except that a plating solution in which 0.5 g / L of imidazole alcohol compound 1 was added to the composition shown in the above Table 42 was used. , Confirmed solderability.
- Mark X Unplatable area (abnormal deposition, burns).
- Example 1 1 is tin plating
- FIG. 1 Electron micrographs of the plated film obtained in Example 2 and Comparative Example 2.
- FIG. 2 Electron micrographs of the plated film obtained in Example 5 and Comparative Example 5.
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- 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)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK07112479.8A HK1107125B (en) | 2004-12-24 | 2005-12-16 | Tin and tin alloy electroplating solutions |
| JP2006548928A JP4404909B2 (ja) | 2004-12-24 | 2005-12-16 | 電気スズおよびスズ合金めっき液 |
| CN2005800337527A CN101035929B (zh) | 2004-12-24 | 2005-12-16 | 锡和锡合金的电镀液 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-373379 | 2004-12-24 | ||
| JP2004373379 | 2004-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006068046A1 true WO2006068046A1 (ja) | 2006-06-29 |
Family
ID=36601646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/023139 Ceased WO2006068046A1 (ja) | 2004-12-24 | 2005-12-16 | 電気スズおよびスズ合金めっき液 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP4404909B2 (ja) |
| KR (1) | KR20070055612A (ja) |
| CN (1) | CN101035929B (ja) |
| MY (1) | MY146391A (ja) |
| TW (1) | TWI307729B (ja) |
| WO (1) | WO2006068046A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009035768A (ja) * | 2007-08-01 | 2009-02-19 | Taiyo Kagaku Kogyo Kk | 電子部品用錫電解めっき液、電子部品の錫電解めっき方法及び錫電解めっき電子部品 |
| JP2013023693A (ja) * | 2011-07-14 | 2013-02-04 | Ishihara Chem Co Ltd | イミダゾール環結合型オキシアルキレン化合物及び当該化合物を含有するメッキ浴 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570825B (zh) * | 2018-11-22 | 2021-07-13 | 东莞市绿志岛金属有限公司 | 一种低温无卤无铅焊锡膏及其制备方法 |
| CN112410831B (zh) * | 2020-11-17 | 2021-11-26 | 广州三孚新材料科技股份有限公司 | 一种用于异质结太阳能电池的电镀锡液及其制备方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07197289A (ja) * | 1985-09-20 | 1995-08-01 | Learonal Inc | スズ電気メッキ溶液及びそれを用いた高速電気メッキ方法 |
| JP2003293186A (ja) * | 2002-04-09 | 2003-10-15 | Ishihara Chem Co Ltd | 中性スズメッキ浴、当該浴を用いたバレルメッキ方法 |
| JP2004323971A (ja) * | 2003-04-25 | 2004-11-18 | Rohm & Haas Electronic Materials Llc | 改良された浴分析 |
-
2005
- 2005-12-16 JP JP2006548928A patent/JP4404909B2/ja not_active Expired - Lifetime
- 2005-12-16 KR KR1020077009035A patent/KR20070055612A/ko not_active Ceased
- 2005-12-16 CN CN2005800337527A patent/CN101035929B/zh not_active Expired - Lifetime
- 2005-12-16 WO PCT/JP2005/023139 patent/WO2006068046A1/ja not_active Ceased
- 2005-12-20 TW TW94145207A patent/TWI307729B/zh active
- 2005-12-23 MY MYPI20056198A patent/MY146391A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07197289A (ja) * | 1985-09-20 | 1995-08-01 | Learonal Inc | スズ電気メッキ溶液及びそれを用いた高速電気メッキ方法 |
| JP2003293186A (ja) * | 2002-04-09 | 2003-10-15 | Ishihara Chem Co Ltd | 中性スズメッキ浴、当該浴を用いたバレルメッキ方法 |
| JP2004323971A (ja) * | 2003-04-25 | 2004-11-18 | Rohm & Haas Electronic Materials Llc | 改良された浴分析 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009035768A (ja) * | 2007-08-01 | 2009-02-19 | Taiyo Kagaku Kogyo Kk | 電子部品用錫電解めっき液、電子部品の錫電解めっき方法及び錫電解めっき電子部品 |
| JP2013023693A (ja) * | 2011-07-14 | 2013-02-04 | Ishihara Chem Co Ltd | イミダゾール環結合型オキシアルキレン化合物及び当該化合物を含有するメッキ浴 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070055612A (ko) | 2007-05-30 |
| CN101035929B (zh) | 2010-08-25 |
| HK1107125A1 (zh) | 2008-03-28 |
| JPWO2006068046A1 (ja) | 2008-08-07 |
| JP4404909B2 (ja) | 2010-01-27 |
| CN101035929A (zh) | 2007-09-12 |
| MY146391A (en) | 2012-08-15 |
| TWI307729B (en) | 2009-03-21 |
| TW200628639A (en) | 2006-08-16 |
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