Expired Canadian patentCanada
Synthetic cooking oils containing dicarboxylic acid esters
CA 1284337 C · Owner: Fulcher, John G. · Inventors: Fulcher, John G.
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Diesters of the formula wherein R1 and R2 are hydrogen or alkyl of from 1 to about 20 carbon atoms, and X and Y are alkyl alkenyl or, dienyl of from about 12 to about 18 carbon atoms useful, as low calorie synthetic oils suitable for consumption by mammals.
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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
- Granted May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 6, 1986
GrantedMay 21, 1991
Term endedMay 21, 2008
Patent numberCA 1284337 C
Classification (IPC)C07C69/38
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.