Process for selectively oxidizing primary hydroxyl groups of organic compounds, and resin containing adsorbed catalyst for use therein
CA 2302552 A1 · Owner: Tanaka, Hideki · Inventors: Tanaka, Hideki; Fujisaki, Isao; Ori, Kazutomo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for selectively oxidizing primary hydroxyl groups of organic compounds, characterized by reacting an electrolytically oxidized halogencontaining compound with an organic compound having a primary hydroxyl group in the presence of a resin containing an oxidized amine adsorbed thereon.
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 August 31, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 31, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2020.
- 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.