Hydrogenation of halonitroaromatic compounds
CA 1333608 C · Owner: Gibson, Charles Lloyd · Inventors: Mullins, Edward Tipton; Gibson, Charles Lloyd; Lentz, Carl Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst. The catalyst gives good hydrogenation rates while minimizing formation of dehalogenated by-products.
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 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 20, 2011.
- 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.