Fuel oil compositions with improved cold flow properties
CA 2548008 C · Owner: Troetsch-Schaller, Irene · Inventors: Eisenbeis, Ansgar; Troetsch-Schaller, Irene; Ahlers, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the use of polymers containing an .alpha. olefin a , vinylester and an ester of an .alpha..beta. unsaturated carboxylic acid polymerised in the polymer, as additives for fuel oils and lubricants and in , particular, as a cold flow improver in fuel oils. The invention also relates to fuel oils and lubricants added to said polymers in addition to additive , packets containing said type of copolymers.
Read the whole patent
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 3, 2004 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 3, 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.