Electroplating palladium
CA 1089796 A · Owner: Amp Incorporated · Inventors: Davis, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1. A method of electroplating palladium on a substrate comprises passing an electric current between an anode and the substrate in a bath comprising an aqueous solution of palladium diammonium dinitrite (Pd (NH3)2 (NO2)2) and tetrapotassium pyrophosphate. In a preferred method the electric current passes at a current density of 2 to 50 ASF (0.2 to 5.4 ASD) in a bath containing 4 to 18 gpl of palladium and 5 to 300 gpl of tetrapotassium pyrophosphate, the solution being at a pH of 8.5 to 11 and being maintained by the addition of pyrophosphoric acid or potassium hydroxide. The baths for the electrodeposition of palladium also form part of the invention.
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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 November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 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.