Glycerol esters with oil-soluble copper compounds as fuel economy additives
CA 1205451 A · Owner: Imperial Oil Limited · Inventors: Smith, Clinton R.; Brewster, Phillip W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lubricating oil compositions are disclosed exhibiting improved fuel economy which contain 0.05 to 0.2 wt. % of a glycerol partial ester of a C16-C18 fatty acid and 5 to 500 ppm of copper in the form of an oil-soluble organic copper compound the two components exhibiting a combined effect in improving fuel economy of internal combustion engines.
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 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
- 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.