Corrosion resistant coating
CA 1300989 C · Owner: Lea Manufacturing Company · Inventors: Tuttle, James N.; Jaboin, Olyn P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for improving the corrosion resistance of an iron or steel part having a phosphate conversion coating said method, comprising contact of said part with a solution containing ions selected from the group of cobalt ions and nickel ions. Preferably the solution also contains stannous ions. Contact may be by immersion or spraying.
Read the whole patent
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.