Method of preparing composite aluminum material
CA 1237346 A · Owner: Kabushiki Kaisha Toyota Chuo Kenkyusho · Inventors: Iwahori, Hiroaki; Takahashi, Yoshiyasu; Suzuki, Kenichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing a composite aluminum material to be formed integrally by bonding aluminum or aluminum alloy to an aluminum or aluminum alloy member which is formed in advance in a specified shape by the method of internal chill etc. The method, comprises the steps of forming a chemical conversion coating of pentafluoroaluminate (K2AlF5) by bringing a solution containing potassium and fluorine in contact with the surface of the aluminum member.
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 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.