3-propenylcephem derivative
CA 1290748 C · Owner: Kitoh, Kyosuke · Inventors: Machida, Yoshimasa; Nomoto, Seiichiro; Komatu, Yuuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A 3-propenylcephem derivative of the following formula:, wherein R1 represents a fluoro-substituted lower alkyl group or a cyano-substituted lower alkyl group and A, represents a cyclic or an acylic ammonio group or a, pharmaceutically acceptable salt thereof exhibiting, excellent anti-bacterial activities against both Gram-positive bacteria and Gram-negative bacteria; Process for the preparation thereof; Anti-bacterial composition; Intermediate for the 3-propenylcephem derivative; and Process for the preparation of the intermediate.
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 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.