Organic cerium (iv) compounds and their preparation and use
CA 2098666 A1 · Owner: Rhone-Poulenc Chemicals Limited · Inventors: Hawkins, Ian Michael; Mauermann, Heiko Heinrich Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides novel organic solvent soluble cerium (IV) derivatives useful as catalysts and a process for their preparation by reaction in aqueous solution of a cerium (IV) salt with a salt of an organic acid preferably, a carboxylate.
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 June 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2015.
- 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.