Automatic transmission and wet brake fluids and additive packages therefor
CA 2068624 A1 · Owner: Ethyl Petroleum Additives, Inc. · Inventors: Papay, Andrew G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Case EI-6335, AUTOMATIC TRANSMISSION AND WET BRAKE FLUIDS AND ADDITIVE PACKAGES THEREFOR, Abstract Of the Disclosure Oil-based functional fluid compositions formulated for use as automatic transmission fluid, fluid for a wet brake system or a friction-depending lubricant, are improved by including in the composition a minor amount of at least one alcohol or polyol having less than 12 carbon atoms in the molecule. This resultsin a desirable increase in the dynamic and/or static coefficients of friction ofautomatic transmission or other frictional surfaces contacted by the composition. Preferred for this use is a composition formed by heating at least one ashless dispersant containing basic …
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 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 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.