Chiral diphosphines and their metal complexes
CA 2429252 A1 · Owner: Genet, Jean-Pierre · Inventors: Bulliard, Michel; Marinetti, Angela; Michaud, Guillaume
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns novel chiral diphosphines (R) or (S) and their use as optically active ligand for preparing diphosphino-metallic complexes. The invention also concerns the diphosphino-metallic complexes containing said chiral diphosphines (R) or (S) and the use of said diphosphino-metallic complexes as catalyst in asymmetric catalysis of unsaturated compounds bearing functional groups.
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 November 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2023.
- 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.