Process for producing gold-colored coinage
CA 1296289 C · Owner: Bradford, Raymond Augustus · Inventors: Conard, Bruce Randolph; Babjak, Juraj; Hope, Douglas Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing gold-colored disc-like objects including electrodepositing a hard nickel cobalt or chromium layer, onto a disc-like metal substrate and arc plasma plating TiN onto the electroplated surface.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.