Catalyst for hydration of nitriles
CA 1113960 A · Owner: American Cyanamid Company · Inventors: Marzluff, William F.; Barber, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the use of reduced copper chromium oxide as catalyst for the hydration of nitriles the tendency towards, formation of by-products during an initial period of use of the catalyst, is reduced by pretreating the reduced catalyst with dilute mineral acid solution before the catalytic use.
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
- Granted December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 1998.
- 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.