Lubricating oil dispersant containing a polyisobutyl phenoxy substituted acetic amide
CA 1062696 A · Owner: Ethyl Cooper Limited · Inventors: Elliott, John S.; Howlett, Richard M.; Davis, Bryan T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A, "LUBRICANT ADDITIVES", ABSTRACT OF THE DISCLOSURE Novel compounds, useful as lubricant, additives are amides of alkylphenoxy substituted aliphatic carboxylic acids wherein the alkyl group substituted on the phenoxy moiety contains at least 30 carbon atoms. Lubricant compositions containing the novel compounds are also disclosed.
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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 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.