EP2312021A1 - Verfahren zum Erhalten einer gelben Goldlegierungsablagerung durch Galvanoplastik ohne Verwendung von giftigen Metallen - Google Patents
Verfahren zum Erhalten einer gelben Goldlegierungsablagerung durch Galvanoplastik ohne Verwendung von giftigen Metallen Download PDFInfo
- Publication number
- EP2312021A1 EP2312021A1 EP09173198A EP09173198A EP2312021A1 EP 2312021 A1 EP2312021 A1 EP 2312021A1 EP 09173198 A EP09173198 A EP 09173198A EP 09173198 A EP09173198 A EP 09173198A EP 2312021 A1 EP2312021 A1 EP 2312021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- copper
- process according
- gold
- bath
- silver
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 7
- 239000000956 alloy Substances 0.000 title claims abstract description 7
- 150000002739 metals Chemical class 0.000 title claims description 5
- 229910001097 yellow gold Inorganic materials 0.000 title abstract description 3
- 239000010930 yellow gold Substances 0.000 title abstract description 3
- 231100000331 toxic Toxicity 0.000 title description 3
- 230000002588 toxic effect Effects 0.000 title description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 27
- 229910052802 copper Inorganic materials 0.000 claims abstract description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000010931 gold Substances 0.000 claims abstract description 18
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 15
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052737 gold Inorganic materials 0.000 claims abstract description 15
- 229910052709 silver Inorganic materials 0.000 claims abstract description 15
- 239000004332 silver Substances 0.000 claims abstract description 15
- 229910001020 Au alloy Inorganic materials 0.000 claims abstract description 13
- 238000000151 deposition Methods 0.000 claims abstract description 12
- 239000003353 gold alloy Substances 0.000 claims abstract description 12
- 239000000080 wetting agent Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 150000002902 organometallic compounds Chemical class 0.000 claims abstract description 3
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical class [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 3
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 3
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 claims description 3
- 229940043264 dodecyl sulfate Drugs 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- 150000003892 tartrate salts Chemical class 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- NYUQKKWCYPVQGE-UHFFFAOYSA-N dodecyl(dimethyl)azanium;propane-1-sulfonate Chemical compound CCCS([O-])(=O)=O.CCCCCCCCCCCC[NH+](C)C NYUQKKWCYPVQGE-UHFFFAOYSA-N 0.000 claims description 2
- 238000009713 electroplating Methods 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000008139 complexing agent Substances 0.000 claims 1
- 230000008021 deposition Effects 0.000 abstract description 9
- 229910052793 cadmium Inorganic materials 0.000 abstract description 7
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000011701 zinc Substances 0.000 abstract description 3
- 229910001316 Ag alloy Chemical class 0.000 abstract 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 1
- 229910002065 alloy metal Inorganic materials 0.000 abstract 1
- 150000002343 gold Chemical class 0.000 abstract 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical group [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 abstract 1
- 239000003352 sequestering agent Substances 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005494 tarnishing Methods 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 150000001204 N-oxides Chemical class 0.000 description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- IPZMTZLUAIKVKD-UHFFFAOYSA-N 1-pyridin-1-ium-1-ylpropane-1-sulfonate Chemical compound CCC(S([O-])(=O)=O)[N+]1=CC=CC=C1 IPZMTZLUAIKVKD-UHFFFAOYSA-N 0.000 description 1
- RVBUGGBMJDPOST-UHFFFAOYSA-N 2-thiobarbituric acid Chemical compound O=C1CC(=O)NC(=S)N1 RVBUGGBMJDPOST-UHFFFAOYSA-N 0.000 description 1
- 241000499489 Castor canadensis Species 0.000 description 1
- 229910017770 Cu—Ag Inorganic materials 0.000 description 1
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 description 1
- 235000011779 Menyanthes trifoliata Nutrition 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- WREDNSAXDZCLCP-UHFFFAOYSA-N methanedithioic acid Chemical compound SC=S WREDNSAXDZCLCP-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
-
- 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
- C25D3/58—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/005—Jewels; Clockworks; Coins
Definitions
- the invention relates to electrolytic deposition in the form of a gold alloy in a thick layer, as well as to its method of manufacture.
- the deposits obtained by these known methods have cadmium contents of between 1 and 10%.
- Cadmium facilitates the deposition of thick layers, that is to say between 1 and 800 microns and makes it possible to obtain a yellow-colored alloy by decreasing the quantity of copper contained in the alloy; however, cadmium is extremely toxic and banned in some countries.
- the object of the present invention is to overcome all or part of the disadvantages mentioned above a manufacturing process for the deposition in thick layer of a yellow gold alloy having neither zinc nor cadmium as main constituents.
- the invention relates to a method for the electroplating of a gold alloy on an electrode immersed in a bath comprising gold metal in the form of alkaline aurocyanide, organometallic compounds, a wetting agent, a complexant, free cyanide characterized in that the alloying metals are copper in the form of double cyanide of copper and potassium, and silver in cyanide form for depositing on the electrode a gold alloy of the yellow type brilliant mirror.
- the invention also relates to an electrolytic deposit in the form of a gold alloy obtained from a process according to one of the preceding claims whose thickness is between 1 and 800 microns and which comprises copper characterized in that it comprises silver as the third main compound to obtain a brilliant shade 3N, preferably in a proportion of 75% gold, 21% copper and 4% silver.
- the invention relates to an electrolytic deposition of a 3N gold alloy which, surprisingly, comprises principal Au-Cu-Ag compounds whose proportions are not known to obtain the 3N hue, that is to say say bright yellow.
- a gold alloy free of toxic metals or metalloids, in particular free of cadmium, 3N yellow color, a thickness of 200 microns, excellent gloss and having a very high high resistance to wear and tarnishing.
- the electrolysis is preferably followed by a heat treatment at a temperature between 200 and 450 degrees Celsius for 1 to 30 minutes to obtain an optimal quality deposit.
- the bath according to the invention makes it possible to obtain a deposit substantially in a proportion of 75% of gold, 21% of copper and 4% of silver corresponding to a deposit of shade 3N to 18 carats which is a very different proportion of the usual electrolytic deposits for this shade which are rather deposits according to substantially 75% of gold, 12.5% of copper and 12.5% of silver.
- the bath may further contain a brightener.
- a brightener This is preferably a butynediol derivative, a pyridinio-propanesulfonate or a mixture of both, a tin salt, sulfonated beaver oil, methylimidozole, dithiocarboxylic acid such as thiourea, thiobarbituric acid, imidazolidinthione or thiomalic acid.
- the electrolytic bath contained in a polypropylene or PVC tank with heat-insulating coating. Bath heating is achieved by thermo-plungers in quartz, PTFE, porcelain or stabilized stainless steel. Good cathodic agitation as well as a circulation of the electrolyte must be maintained.
- the anodes are platinized titanium, stainless steel, ruthenium, iridium or alloys of the latter two.
- the bath may contain the following metals Zr, Se, Te, Sb, Sn, Ga, As, Sr, Be, Bi in negligible quantity.
- the wetting agent may be of any type capable of wetting in an alkaline cyanide medium.
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)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09173198.4A EP2312021B1 (de) | 2009-10-15 | 2009-10-15 | Verfahren zum erhalten einer gelben goldlegierungsablagerung durch galvanoplastik ohne verwendung von giftigen metallen |
| US12/905,788 US20110089040A1 (en) | 2009-10-15 | 2010-10-15 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic materials |
| KR1020100100585A KR101297476B1 (ko) | 2009-10-15 | 2010-10-15 | 독성 금속을 사용하지 않고 전기주조에 의하여 황색 금 합금 전착물을 수득하는 방법 |
| JP2010232903A JP5563421B2 (ja) | 2009-10-15 | 2010-10-15 | 毒性金属を使用することなく電気めっき法により黄色の金合金析出物を得る方法 |
| CN201010552012.7A CN102041527B (zh) | 2009-10-15 | 2010-10-15 | 通过电铸在不使用有毒金属的情况下获得黄色金合金沉积物的方法 |
| HK11111618.6A HK1157415A1 (en) | 2009-10-15 | 2011-10-27 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic metals |
| US14/452,364 US9567684B2 (en) | 2009-10-15 | 2014-08-05 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic materials |
| US15/898,330 US20180171499A1 (en) | 2009-10-15 | 2018-02-16 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic materials |
| US16/847,699 US20200240030A1 (en) | 2009-10-15 | 2020-04-14 | Method of obtaining a yellow gold alloy deposition by galvanoplasty without using toxic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09173198.4A EP2312021B1 (de) | 2009-10-15 | 2009-10-15 | Verfahren zum erhalten einer gelben goldlegierungsablagerung durch galvanoplastik ohne verwendung von giftigen metallen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2312021A1 true EP2312021A1 (de) | 2011-04-20 |
| EP2312021B1 EP2312021B1 (de) | 2020-03-18 |
Family
ID=41820241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09173198.4A Active EP2312021B1 (de) | 2009-10-15 | 2009-10-15 | Verfahren zum erhalten einer gelben goldlegierungsablagerung durch galvanoplastik ohne verwendung von giftigen metallen |
Country Status (6)
| Country | Link |
|---|---|
| US (4) | US20110089040A1 (de) |
| EP (1) | EP2312021B1 (de) |
| JP (1) | JP5563421B2 (de) |
| KR (1) | KR101297476B1 (de) |
| CN (1) | CN102041527B (de) |
| HK (1) | HK1157415A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2505691A1 (de) * | 2011-03-31 | 2012-10-03 | The Swatch Group Research and Development Ltd. | Verfahren zur Erhaltung einer Beschichtung aus einer Goldlegierung 18 Karat 3N |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018066007A1 (en) * | 2016-10-06 | 2018-04-12 | Valmet Plating S.R.L. | A galvanic and thermal process to obtain the coloration of metals, in particular precious metals |
| CN107299364A (zh) * | 2017-06-07 | 2017-10-27 | 常州富思通管道有限公司 | 一种镀锌光亮剂及其制备方法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400492A (en) | 1971-07-09 | 1975-07-16 | Oxy Metal Finishing Corp | Gold alloy plating solutions |
| EP0193848A1 (de) * | 1985-03-01 | 1986-09-10 | Heinz Emmenegger | Galvanisches Bad für das Elektroplattieren von Goldlegierungen |
| JPS62164890A (ja) * | 1986-01-16 | 1987-07-21 | Seiko Instr & Electronics Ltd | 金銀銅合金めつき液 |
| EP0416342A1 (de) * | 1989-09-06 | 1991-03-13 | Degussa Aktiengesellschaft | Galvanisches Goldlegierungsbad |
| EP0566054A1 (de) * | 1992-04-15 | 1993-10-20 | LeaRonal, Inc. | Elektroplattierte Gold-Kupfer-Silber Legierungen |
| US5340529A (en) * | 1993-07-01 | 1994-08-23 | Dewitt Troy C | Gold jewelry alloy |
| US6576114B1 (en) * | 1995-11-03 | 2003-06-10 | Enthone Inc. | Electroplating composition bath |
| EP1728898A2 (de) * | 2005-06-02 | 2006-12-06 | Rohm and Haas Electronic Materials LLC | Elektrolyte zur Abscheidung von Goldlegierungen |
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| US2127676A (en) * | 1938-04-21 | 1938-08-23 | Claude H Coleman | Process of tempering gold and silver alloys |
| US2141157A (en) * | 1938-08-23 | 1938-12-20 | Metals & Controls Corp | Alloy |
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| CH286123A (fr) * | 1952-05-08 | 1952-10-15 | Spreter Victor | Bain pour le dépôt par voie galvanique d'alliages d'or. |
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| DE1460993A1 (de) | 1965-07-23 | 1970-07-23 | Kieninger & Obergfell | Elektrisches Programmsteuergeraet,vorzugsweise fuer elektrische Haushaltsgeraete,insbesondere Waschmaschinen und Geschirrspuelmaschinen |
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| CH622829A5 (de) * | 1977-08-29 | 1981-04-30 | Systemes Traitements Surfaces | |
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| CH710184B1 (fr) * | 2007-09-21 | 2016-03-31 | Aliprandini Laboratoires G | Procédé d'obtention d'un dépôt d'alliage d'or jaune par galvanoplastie sans utilisation de métaux ou métalloïdes toxiques. |
| CN105308198B (zh) * | 2013-09-10 | 2018-04-13 | 苹果公司 | 具有改善的硬度的晶体金合金 |
-
2009
- 2009-10-15 EP EP09173198.4A patent/EP2312021B1/de active Active
-
2010
- 2010-10-15 US US12/905,788 patent/US20110089040A1/en not_active Abandoned
- 2010-10-15 KR KR1020100100585A patent/KR101297476B1/ko active IP Right Grant
- 2010-10-15 JP JP2010232903A patent/JP5563421B2/ja active Active
- 2010-10-15 CN CN201010552012.7A patent/CN102041527B/zh active Active
-
2011
- 2011-10-27 HK HK11111618.6A patent/HK1157415A1/xx unknown
-
2014
- 2014-08-05 US US14/452,364 patent/US9567684B2/en active Active
-
2018
- 2018-02-16 US US15/898,330 patent/US20180171499A1/en not_active Abandoned
-
2020
- 2020-04-14 US US16/847,699 patent/US20200240030A1/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2505691A1 (de) * | 2011-03-31 | 2012-10-03 | The Swatch Group Research and Development Ltd. | Verfahren zur Erhaltung einer Beschichtung aus einer Goldlegierung 18 Karat 3N |
| US10053789B2 (en) | 2011-03-31 | 2018-08-21 | The Swatch Group Research And Development Ltd | Method of obtaining a 18 caracts 3N gold alloy |
| US10793961B2 (en) | 2011-03-31 | 2020-10-06 | The Swatch Group Research And Development Ltd | Method of obtaining a 18 carats 3N gold alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150027898A1 (en) | 2015-01-29 |
| HK1157415A1 (en) | 2012-06-29 |
| KR20110041424A (ko) | 2011-04-21 |
| US20200240030A1 (en) | 2020-07-30 |
| KR101297476B1 (ko) | 2013-08-16 |
| US20180171499A1 (en) | 2018-06-21 |
| JP2011084815A (ja) | 2011-04-28 |
| US9567684B2 (en) | 2017-02-14 |
| US20110089040A1 (en) | 2011-04-21 |
| CN102041527B (zh) | 2014-09-17 |
| JP5563421B2 (ja) | 2014-07-30 |
| CN102041527A (zh) | 2011-05-04 |
| EP2312021B1 (de) | 2020-03-18 |
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