Process for preparing isocamphylcyclohexanols
CA 2215613 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Darsow, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To prepare isocamphylcyclohexanols by hydrogenating compounds containing the carbon skeleton of the isocamphylguaiacols or isocamphylphenols oxygen-free, and support-free molded bodies disposed in a fixed bed and made of compacted powders of the elements of the ferrous subgroup of group VIII of the periodic system or their mutual alloys or their alloys with elements of group VIB are used as catalysts; in addition, hydrogenationally inert elements may be present. The molded bodies have a compressive strength of 20 to 250 N and an internal surfacearea of 10 to 90 m2/g.
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 16, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.