Additive useful in oleaginous compositions
CA 1063611 A · Owner: Exxon Research And Engineering Company · Inventors: Brois, Stanley J.; Zielinski, James; Ryer, Jack
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Amine or polyol or alkylene oxide derivatives of Oxazoline reaction products of hydrocarbon substituted dicarboxylic acid ester or, anhydride, for example octadecenylsuccinic anhydride and polyisobutenylsuccinic anhydride with 2,2-disubstituted-2-amino-1-alkanols such as, tris-hydroxymethylaminomethane (THAM) are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil or anti-rust, agents for gasoline.
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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 October 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 2, 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.