Expired Canadian patentCanada
Process for the enzymatic cleavage of vinyl 2-aryl-propionates
CA 2018562 C · Owner: Keller, Reinhold · Inventors: Fulling, Gerd; Schlingmann, Merten; Keller, Reinhold
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the enzymatic stereoselective ester cleavages of 2arylpropionate, the reaction rate of the hydrolyzing enzymes can be drastically increased if the vinyl ester of the 2-arylpropionate is employed as the substrate.
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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 June 8, 1990 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 8, 1990
GrantedNovember 27, 2001
Term endedJune 8, 2010
Patent numberCA 2018562 C
Classification (IPC)C12P17/00 +2 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.