Plating solution containing an inorganic redox couple and a complexing agent for cuprous ions
CA 1069367 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Heijnen, Godefridus H.C.; Molenaar, Arian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A copper-plating bath suitable for reprographic uses and for making electrically conducting metal patterns with one of the redox pairs V2+/V3+, Ti2+/Ti3+ or, Cr2+/Cr3+ as a reducing agent, ascorbic acid with an acid acceptor, or the redox pair Fe2+/Fe3+ together with an organic carboxylic acid and a complexing agent for cuprous ions.
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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.