Lubricant composition suitable for direct fuel injected, crankcase-scavenged two-stroke engines
CA 2482754 C · Owner: Svarcas, Laimute R. · Inventors: Svarcas, Laimute R.; Petric, John L.; Cleveland, William K. S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lubricant composition suitable for lubricating a direct fuel injection twostroke engine comprises at least one condensation product of a fatty acid with an amine or ammonia and of at least one Mannich dispersant each in an amount , of 0.5 to 8 percent by weight along with an oil of lubricating viscosity.
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 17, 2003 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2025.
- 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.