Method for producing a metal film resistor by electroless plating
CA 1046357 A · Owner: Takahama, Hiroshi · Inventors: Hamaguchi, Hachiro; Takahama, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention discloses a novel process for the production of metal film resistors by electrodeless plating. It consists of treating a base material to one of the following treatments:, 1) soaking the base material in a solution of stannous chloride, a silver salt and palladium chloride; 2) heating the base material in an atmosphere which will not oxidize the material and then subjecting the material to a surface treatment in an atmosphere wherein the material will be oxidized;, 3) treating the material as in paragraph 2) above and then teating the material to the solution of paragraph 1) above. The base material is then soaked in an electrodeless plating bath containing metallic salts, a …
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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 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
- 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.