Fuel oils composed of mineral distillates and oils of vegetable or animal origin and having improved cold flow properties
CA 2490031 C · Owner: Clariant Gmbh · Inventors: Krull, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a fuel oil composition F) comprising F1) a fuel oil of mineral origin and F2) a fuel oil of vegetable and/or animal origin and, as a cold additive, the constituents A) at least one copolymer composed of ethylene and 8-21 mol% of at least one acrylic or vinyl ester having a C1-C18-alkyl radical and B) at least one comb polymer containing structural units having C8-C16-alkyl radicals the structural units being selected from C8-C16-alkyl (meth)acrylates C8-C16-alkyl vinyl esters, C8-C16-alkyl vinyl ethers C8-C16- alkyl(meth)acrylamides, C8-C16-alkyl allyl ethers and C8-C16-diketenes where the sum R (see above formula) of the molar averages of the carbon chain length …
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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 December 10, 2004 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.