Production of cyanopyridines from piperidines
CA 1063609 A · Owner: Lummus Company (The) · Inventors: Richtzenhain, Hermann; Janssen, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Nicotinonitrile is produced from a piperidine having an alkyl substituent in the three position by contact with ammonia in the, absence of molecular oxygen, and in the presence of oxidized vanadia supported on a porous support, containing from 25% to 75% by weight, of the vanadia, the vanadia having been placed in molten form substantia entirely within the pores of the support with the support having a surfac, area greater than 50 m2/gm and a porosity greater than 0.4 cc/gm with the support being either gamma-alumina or silica-alumina.
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 October 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 2, 1996.
- 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.