Fuel compositions
CA 2024080 A1 · Owner: Ethyl Petroleum Additives, Inc. · Inventors: Malfer, Dennis J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Succinimides useful as detergents in fuels are prepared by reacting (a) at least one substituted succinic acid or acid derivative thereof containing an average of from 16 to 50 carbon atoms in the molecule and having an acyclic aliphatic substituent group containing an average of at least 12 but less than 30 carbon atoms with (b) at, least one alkanol polyamine containing an average of at least 4 carbon atoms and containing at least one primary amino group. When used as fuel additives the succini-, mides are effective in reducing deposits in carburetors and injectors.
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
- Filed August 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2012.
- 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.