High boron formulations for fluids for continuously variable transmissions
CA 2372227 A1 · Owner: Ward, William C. Jr. · Inventors: Ward, William C. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Continuously variable transmission can be lubricated by supplying to them a composition of (a) an oil lubricating viscosity; (b) a dispersant; and (c) a detergent. At least one of the dispersant (b) and the detergent (c) is a borated species, and the amount of boron present in the composition is at least 250 ppm and is sufficient to impart improved friction and anti-seizure properties to the composition when employed in said transmission.
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 May 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2022.
- 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.