Fixed-bed raney metal catalyst, its preparation and the hydrogenation of polymers using this catalyst
CA 2216802 A1 · Owner: Basf Aktiengesellschaft · Inventors: Breitscheidel, Boris; Ruhl, Thomas; Diehlmann, Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An activated fixed-bed Raney metal catalyst which is free of metal powder has macropores and is based on an alloy of aluminum and at least one metal of subgroup VIII of the Periodic Table contains more than 80% by, volume, based on the total pores of macropores and is used for the, hydrogenation of low molecular weight and polymeric organic compounds.
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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 October 17, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 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.