Ester-containing fuel for gasoline engines and diesel engines
CA 2046004 C · Owner: Vogel, Hans-Henning · Inventors: Thomas, Juergen; Rath, Hans Peter; Oppenlaender, Knut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a fuel for gasoline engines and diesel engines, containing small amounts of an ester of a mono- and/or poly-carboxylic acid with an alkyl alkanolamine or alkyl aminopolyalkylene glycol of the general formula (I): (I), in which R1 is a C6-C30-alkyl radical R2 is a C6-C30 -alkyl, radical or a hydroxyalkyl radical of the general formula (II): (II), and R3 is a hydroxylalkyl radical of formula (II) in which, R4 is hydrogen or a C1-C6-alkyl radical and m is an integer from 0 to 100.
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 June 28, 1991 and granted July 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2013.
- 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.