Compound having improved low temperature fluidity, and a middle distillate composition and a petroleum fuel composition containing the same
CA 2124162 A1 · Owner: Lee, Jin-Soo · Inventors: Lee, Ki-Ho; Lee, Jin-Soo; Jung, Hyun-Jong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention improves the low temperature flow property of a fuel oil having a boiling point of 120-150°C by adding a compound prepared by reacting prisec- or tert-, aliphatic amine containing alkyl group of 1-30 carbon atoms with 9,10-dihydroanthracene-9,10-endo-.alpha..beta.-succinic acid or anhydride thereof together with a polymer having ethylene structure and/or a terpolymer of dialkyl fumarate-vinyl estervinyl ether.
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 May 24, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2016.
- 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.