Engine lubricant with a high sulfur content base stock comprising a molybdenum dithiocarbamate as an additional antioxidant
CA 2440523 A1 · Owner: Kelley, Jack C. · Inventors: Kelley, Jack C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefinsubstituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol alkylated aromatic , amine, or sulfurized olefin oxidation inhibitor is capable of passing a , Sequence III test.
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 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2024.
- 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.