Metal base coating composition comprising chromium, silica and phosphate and process for coating metal therewith
CA 1256003 A · Owner: Parker Chemical Company · Inventors: Prescott, Thomas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition and process for coating metal surfaces provides an improved base. The aqueous composition contains hexavalent chromium, a silica, a silicate or mixtures, thereof, and a phosphate in specified ratios. The process involves applying the composition to the metal surface followed by curing the coating.
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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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
- 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.