Expired Canadian patentCanada
Two-cycle lubricating oil
CA 2202092 C · Owner: L'Heureux, George Conrad · Inventors: Tiffany, George Mortimer Iii; Smythe, John Henry; L'Heureux, George Conrad
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-cycle oil is disclosed consisting of a polybutene polymer solvent and , mineral oil which passes the JASO engine test for gasoline fueled two-cycle 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
- Filed March 27, 1996 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 27, 1996
GrantedDecember 2, 2003
Term endedMarch 27, 2016
Patent numberCA 2202092 C
Classification (IPC)C10M111/04 +2 more
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.