Fuel compositions containing lubricity enhancing salt compositions
CA 2292522 A1 · Owner: Lubrizol Adibis Holdings (Uk) Limited · Inventors: Moreton, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel composition comprising a major amount of hydrocarbon fuel and a minor lubricity improving amount of a composition made by reacting component (A) with component (B) under salt-forming conditions; component (A) comprising a carboxylic acid represented by the formula R(COOH)n wherein R is a hydrocarbon group of 2 to 30 carbon atoms and n is a number in the range of 1 to 4 or an , anhydride of said acid; and component (B) comprising a heterocylic aromatic amine.
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 April 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2021.
- 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.