Fuel additive compositions containing a mannich condensation product, a poly(oxyalkylene) monool, a polyolefin, and a carboxylic acid
CA 2357134 C · Owner: Chevron Oronite Company Llc · Inventors: Houser, Keith R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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A fuel additive composition comprising: a) a Mannich condensation product of (1) a high molecular weight alkyl-substituted hydroxyaromatic compound wherein the alkyl group has a number average molecular weight of from about 300 to about 5,000 (2) an amine which contains an amino group having at least one active hydrogen atom and (3) an aldehyde, wherein the respective molar ratio of reactants (1) (2), and (3) is , 1:0.1-10:0.1-10;, b) a hydrocarbyl-terminated poly(oxyalkylene) monool having an average molecular weight of about 500 to about 5,000 wherein , the oxyalkylene group is a C2 to C5 oxyalkylene group and the hydrocarbyl group is a C, to C30 hydrocarbyl group; and c) a …
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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 September 11, 2001 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2023.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.