Method for production of d-proline derivatives
CA 2274896 A1 · Owner: Venetz, Daniel · Inventors: Werbitzky, Oleg; Sauter, Martin; Venetz, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new microorganisms which are capable of utilizing a proline derivative in the form of the racemate or its optically active isomers, of the general formula (I), in which R1 means alkyl acyl or , hydrogen, R2 means hydrogen or hydroxy and R3 -NH2 aryloxy or alkoxy, as the , only source of nitrogen the only source of carbon, or as the only carbon and nitrogen source. These microorganisms are used for new methods of production of D-proline derivatives.
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 December 12, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2019.
- 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.