Expired Canadian patentCanada
Process for the optical resolution of dropropizine
CA 2007385 C · Owner: Dompe' Farmaceutici S.P.A. · Inventors: Giani, Roberto
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the optical resolution of racemic dropropizine, carried out using L(+)tartaric acid as the optical resolution agent in aqueous medium is described.
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 9, 1990 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 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.
FiledJanuary 9, 1990
GrantedDecember 30, 1997
Term endedJanuary 9, 2010
Patent numberCA 2007385 C
Classification (IPC)C07D295/08
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.