Expired Canadian patentCanada
Automatic transmission fluids with improved transmission performance
CA 2226296 C · Owner: Exxon Chemical Patents, Inc. · Inventors: Tandon, Manoj; Watts, Raymond Frederick
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Power transmitting fluids, especially automatic transmission fluids possess , improved properties such as antiwear durability, antioxidation, and shift-, time performance by incorporation of high viscosity polyalphaolefins.
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 November 1, 1996 and granted June 3, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.
FiledNovember 1, 1996
GrantedJune 3, 2003
Term endedNovember 1, 2016
Patent numberCA 2226296 C
Classification (IPC)C10M169/04 +1 more
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.