Solution and process for cold forming titanium
CA 1284451 C · Owner: Nishi, Eiichi · Inventors: Kurishima, Haruo; Nakagawa, Hiroyoshi; Nishi, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved solution and process for preparing an article of titanium or titanium alloy for cold forming reduces the peeling of the applied lubricant film. The aqueous solution contains an organic chelating compound, an aqueous organic macromolecular compound and/or a surfactant in an aqueous acidic (pH 1.5 - 4.5) solution of a fluoride and a soluble compound of magnesium calcium, manganese, iron, cobalt, nickel zinc, and/or molybdenum.
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 28, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2008.
- 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.