EP 0028684 A1 19810520 - Manufacture and aftertreatment of an article plated with gold, and article obtained thereby.
Title (en)
Manufacture and aftertreatment of an article plated with gold, and article obtained thereby.
Title (de)
Herstellung und Nachbehandlung eines mit Gold überzogenen Gegenstandes und so erhaltener Gegenstand.
Title (fr)
Fabrication et post-traitement d'un objet revêtu d'or et article ainsi obtenu.
Publication
Application
Priority
US 7306779 A 19790906
Abstract (en)
This invention relates to the fabrication of articles at least a portion of which has an electroplated gold coating thereon having a Knoop hardness of at least 100. The articles are produced by cold forming a material at least a portion of which has an electroplated Additive-Free Hard Gold deposit possessing said hardness but including no more than 0.1 percent of hardening metallic ingredients. Relatively high ductility of the electroplated Additive-Free Hard Gold permits article fabrication which involves cold deformation of plated members. Permitted cutting, stamping and other cold post-plating procedures allow fabrication approach not possible with alloy hardened gold.
IPC 1-7
IPC 8 full level
C25D 3/48 (2006.01); C25D 5/48 (2006.01); H01H 1/02 (2006.01)
CPC (source: EP)
C25D 3/48 (2013.01); C25D 5/48 (2013.01); H01H 1/02 (2013.01); H01H 2011/046 (2013.01)
Citation (search report)
- CH 552069 A 19740731 - ENGELHARD MIN & CHEM
- CH 485863 A 19700215 - ENGELHARD IND INC [US]
- CH 480444 A 19691031 - ENGELHARD IND INC [US]
- CH 444608 A 19670930 - ENGELHARD IND INC [US]
- DE 2523510 B1 19761014 - SIEMENS AG
- DE 1941822 B2 19721228
- DD 59022 A
- DD 46138 A
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 80105297 A 19800905; JP 12296580 A 19800906