Process for the manufacture of heterocyclic compounds containing an alkylsulphonylamino group
CA 1090331 A · Owner: Ciba-Geigy Ag · Inventors: Bickel, Hans; Wiederkehr, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The invention relates to the manufacture of 7.beta.-D-2amino-2-(lower alkylsulphonylamino-phenyl)-acetylamino-3-Rcephem-4-carboxylic acid, in which R denotes lower alkoxy or halogen with an atomic number of up to 35 and their saIts, which compounds possess antibiotic properties.
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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.