Engine oil composition
CA 2085074 C · Owner: Idemitsu Kosan Company Limited · Inventors: Tamoto, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed an engine oil composition which comprises as the essential components (A) a base oil comprising either or both of a mineral oil and a synthetic oil (B) a boron, compound derivative of alkenylsuccinimide (C) an alkaline, earth metal salt of salicylic acid and (D) either or both of a molybdenum dithiophosphate and a molybdenum dithiocarbamate. The above engine oil composition can effectively be used as a lubricating engine oil in automobiles and various industrial internal combustion engines by virtue of reduced friction loss of an engine by the use thereof.and its low friction properties both in the early stages of use and after being used for a certain period of time.
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 December 10, 1992 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2014.
- 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.