Composition and process for chemically stripping metallic deposits
CA 1137396 A · Owner: Oxy Metal Industries Corporation · Inventors: Tomaszewski, Lillie C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process and composition for chemically stripping metallic deposits from a substrate and particularly, from the contact tips of electroplating racks and like apparatus to maintain proper operating efficiency thereof. The improved composition and method employs an aqueous acidic solution containing nitric acid, chloride ions and manganous ions present in an amount sufficient to accelerate the initiation of and the rate of stripping of the metallic deposits. The method and composition are applicable for chemically stripping a variety of metallic deposits at stripping rates substantially higher than those heretofore attainable with prior art compositions and techniques. -16-
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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 December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
- 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
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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.