Electrochemical synthesis of 2-aryl-hydroquinones
CA 1339471 C · Owner: Gatti, Norberto · Inventors: Foa, Marco; Gatti, Norberto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preparation of 2-aryl-hydroquinones of formula (I) by oxidizing by an electrochemical route a compound of formula (II):, (see fig.II) (see fig.I), wherein A represents an aryl group optionally substituted with groups compatible with the reaction conditions in an acidic aqueous reaction medium, at temperatures within the range of from 10° to 100°C, and with anodes of graphite or PbO2. The products are used in photography and in the field of liquid-crystal polymers.
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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
- Granted September 23, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 2014.
- 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.