Aqueous paraffin-naphthene metal cleaning composition
CA 1047357 A · Owner: Amchem Products · Inventors: Cavanaugh, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal cleaning composition comprising a paraffinnaphthene distillate, an aliphatic alkanolamide a nonionic, modified polyethoxylated straight-chain alcohol surfactant and water is provided for the purpose of cleaning a metallic surfact of organic and inorganic residues and contaminants after the metal has been formed and before the treatment steps of an aqueous conversion coating operation. S P E C I F I C A T I O N
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 January 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 1996.
- 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.