Fuel oils having improved cold flow properties
CA 2453966 C · Owner: Clariant Produkte (Deutschland) Gmbh · Inventors: Kupetz, Markus; Wildfang, Raimund; Krull, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fuel oils having improved cold flow properties The invention relates to fuel oils comprising a larger proportion of middle distillates having a sulfur content of at most 350 ppm and an aromatics content of at most 22% by weight and also a smaller proportion of at least one copolymer of ethylene and vinyl esters said copolymer containing a) bivalent structural units derived from ethylene of the formula 1 -CH2-CH2-(1) b) from 5 to 12 mol% of bivalent structural units of the formula 2 (see formula 2) where R1 is saturated branched C5-C18-alkyl, and c) from 4 to 13 mol% of bivalent structural units of the formula 3 (see formula 3) and the sum of the molar proportions of structural units of the …
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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 22, 2003 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2025.
- 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.