Process for preparing cationic rhodium complexes
CA 2540473 C · Owner: Dr. Reddy'S Laboratories (Eu) Limited · Inventors: Moran, Paul Henry; Ramsden, James Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention comprises a process for the preparation and isolation of a nonamorphous cationic rhodium complex having the formula: Rh(ligand)m(diolefin)+ X-, wherein the ligand is an enantiomerically enriched organic compound possessing one or two ligating phosphorus atoms.
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 September 30, 2004 and granted April 29, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2026.
- 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.