Canadian application, no grantCanada
Novel method for preparing chiral amino acids_
CA 2358116 A1 · Owner: Pelta, Isabelle · Inventors: Pelta, Isabelle
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a novel method for preparing chiral amino acids of formula (I) characterised in that it consists in contacting a racemic hydantoin of formula (II) with an enantiomeric splitting agent.
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 January 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 7, 2000
GrantedNo grant recorded
Term endedJanuary 7, 2020
Patent numberCA 2358116 A1
Classification (IPC)C07C227/32 +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.