Distillate fuels stabilized with diaminomethane and method thereof
CA 1318505 C · Owner: Weers, Jerry J. · Inventors: Weers, Jerry J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A distillate fuel particularly one which has a high, acid number initially or which develops a high acid number as a result of fuel degradation, stabilized with a diaminomethane of the formula:, wherein R1, R2, R3 and R4 may be independently a saturated or unsaturated hydrocarbon group, e. g. alkyl aryl, aralkyl, alkaryl, cycloalkyl, alkenyl aralkenyl, alkenylaryl, cycloalkenyl and the like or heterocyclyl groups and in which R1 and R2 and/or R3 and R4 may be joined together to form a five or six member heterocyclyl ring and R5 may be hydrogen or lower alkyl is disclosed. A method of stabilizing a fuel oil wherein a stabilizing amount of the above-mentioned diaminomethane is incorporated …
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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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
- 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
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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.