Preparation of chiral catalysts based on ruthenium and phosphorus complexes
CA 2064870 A1 · Owner: Genet, Jean-Pierre · Inventors: Mallart, Sergio; Genet, Jean-Pierre; Juge, Sylvain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for the preparation of a chiral catalyst comprised of an , organic complex of ruthenium and phosphorus consisting in, heating a complex of ruthenium with a phosphine within an organic, liquid, inert in relation to substances in presence the heated, complex being based on a diene and an allylic compound; the product obtained following the heating is subjected to the action of an acid in an organic solvant.
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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 August 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2012.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.