Composition for control of induction system deposits
CA 2095683 C · Owner: Afton Chemical Corporation · Inventors: Cunningham, Lawrence J.; Hollrah, Don P.; Kulinowski, Alexander M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fuel additives and fuel additive compositions are described comprising: (i) at least one fuel-soluble detergent/dispersant which is (a) a fuel-soluble salt, amide, imide, oxazoline and/or ester or a mixture thereof, of a long chain aliphatic, hydrocarbon-substituted dicarboxylic acid or its anhydride (b) a long chain , aliphatic, hydrocarbon having a polyamine attached directly thereto and/or (c) a Mannich, condensation product formed by condensing a long chain aliphatic hydrocarbonsubstituted phenol with an aldehyde, and an amine; wherein the long chain hydro-, carbon group in (a), (b) and (c) is a polymer of at least one C2 to C10 monoolefin, said polymer having a number average …
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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
- Filed May 6, 1993 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2015.
- 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.