Method of manufacturing a hydrogenation catalyst
CA 2250745 A1 · Owner: Heineke, Daniel · Inventors: Schneider, Heinz-Walter; Thome, Alfred; Heineke, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns the manufacture of a hydrogenation catalyst by the reduction of platinum from an oxidation state of not less than two with a reducing agent in an aqueous medium in the presence of a carbon-containing support following partial poisoning, the method using a compound of general formula (I) in which X, Y and Z, which may be the same or different are , hydrogen, C1-C18 alkyl, C5-C10 cycloalkyl halogen, hydroxyl, C1-C6 alkoxy or-, NR'R'' whereby R, R' and R'', which may by the same or different are , hydrogen, C1-C18 alkyl or C5-C10 cycloalkyl. The invention also concerns a hydrogenation catalyst manufactured by this method its use in the production , of …
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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 April 1, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2019.
- 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.