Lubricating oil for internal combustion engines
CA 2213075 C · Owner: Hosonuma, Kunihiko · Inventors: Naitoh, Yasushi; Hosonuma, Kunihiko; Imori, Toru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a lubricating oil for internal combustion engine which comprises:, a mineral oil and/or a synthetic lubricating oil as a base oil, and oxymolybdenum dithiocarbamate sulfide expressed by the chemical formula (1): (See formula I), wherein R1 or R1 and R3 denote a branched aliphatic hydrocarbon group having not less than fourteen carbons and, R2 through R4 or R2 and R4 denote an aliphatic hydrocarbon group having not less than four carbons, in the amount of 0.005 to 0.2% by weight, when calculated as molybdenum (Mo).
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 24, 1996 and granted October 9, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 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.
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.