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Part-I - Controller General of Patents Designs and Trademarks

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(12) PATENT APPLICATION PUBLICATION (21) Application No.1123/CHE/2012 A<br />

(19) INDIA<br />

(22) Date <strong>of</strong> filing <strong>of</strong> Application :26/03/2012 (43) Publication Date : 21/06/2013<br />

(54) Title <strong>of</strong> the invention : METHOD OF OBTAINING A 18 CARACTS 3N GOLD ALLOY<br />

(51) International classification :C25D<br />

(31) Priority Document No :11160669.5<br />

(32) Priority Date :31/03/2011<br />

(33) Name <strong>of</strong> priority country :EPO<br />

(86) International Application No<br />

:NA<br />

Filing Date<br />

:NA<br />

(87) International Publication No : NA<br />

(61) Patent <strong>of</strong> Addition to Application Number :NA<br />

Filing Date<br />

:NA<br />

(62) Divisional to Application Number<br />

:NA<br />

Filing Date<br />

:NA<br />

(71)Name <strong>of</strong> Applicant :<br />

1)THE SWATCH GROUP RESEARCH AND<br />

DEVELOPMENT LTD.<br />

Address <strong>of</strong> Applicant :RUE DES SORS 3, 2074 MARIN<br />

Switzerl<strong>and</strong><br />

(72)Name <strong>of</strong> Inventor :<br />

1)FROELICHER, THOMAS<br />

2)HENZIROHS, CHRISTOPHE<br />

3)PLANKERT, GUIDO<br />

(57) Abstract :<br />

The invention relates to a method for the galvanoplastic deposition <strong>of</strong> a gold alloy on an electrode dipped into a bath including<br />

gold metal, organometallic compounds, a wetting agent, a sequestering agent <strong>and</strong> free cyanide, the alloy metals being copper<br />

metal <strong>and</strong> silver metal allowing a mirror-bright yellow gold alloy to be deposited on the electrode characterized in that the bath<br />

respects a proportion <strong>of</strong> 21.53% gold, 78.31% copper <strong>and</strong> 0.16% silver. The invention concerns the field <strong>of</strong> galvanic depositions.<br />

No. <strong>of</strong> Pages : 9 No. <strong>of</strong> Claims : 14<br />

The Patent Office Journal 21/06/2013 13650

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