Lubricating compositions with improved thermal stability and limited slip performance
CA 2347753 A1 · Owner: The Lubrizol Corporation · Inventors: Cain, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a lubricating composition comprising a blend of a major amount of an oil of lubricating viscosity gear or transmission oil , package and a top treatment which comprises at least one saturated fatty phosphate ester or salt, wherein the lubricating composition is free of saturated fatty phosphites. In another embodiment the invention relates to a , lubricating composition comprising a major amount of an oil of lubricating viscosity, at least one saturated fatty phosphate ester or salt at least one , polysulfide and at least one phosphorus antiwear or extreme pressure agent wherein the lubricating composition is free of saturated fatty phosphites. The invention …
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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 October 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2021.
- 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.