Lubricant emulsion
CA 1293244 C · Owner: Alcan International Limited · Inventors: Marwick, William F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metal-working lubricant comprises an aqueous emulsion of a) a long-chain aliphatic ester amide, alcohol or acid, and b) as a fugitive emulsifier an ammonium or volatile amine salt of a long-chain aliphatic acid. On application to sheet e.g. of, aluminium metal with a chromate or anodic oxide protective surface layer, the water and ammonia or volatile amine evaporate to leave a storage-stable hydrophobic lubricant. The sheet can be formed or made into adhesively bonded structures of shaped components.
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 December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 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.