Fuel products
CA 1303853 C · Owner: Dorer, Casper John, Jr. · Inventors: Dorer, Casper John, Jr.; Johnston, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fuel composition for internal combustion engines is disclosed. The composition comprises a major amount of a liquid hydrocarbon fuel, containing less than about 0.5 grams of lead per liter of fuel, and a minor amount of (A) at least one hydrocarbon-soluble alkaline metal or alkaline earth metal salt of a sulfur acid, a carboxylic acid or a phenol (B) at least, one hydrocarbon-soluble ashless dispersant present an amount, sufficient to reduce valve seat recession when the fuel is used in an internal combustion engine. Fuel compositions according to the invention act not only to control valve seat recession but also to reduce and modify deposit formation and thereby, enhance engine …
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
- Granted June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
- 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.