Cephalosporin derivatives, process for their preparation and antibacterial agents
CA 1306994 C · Owner: Banyu Pharmaceutical Co. Ltd. · Inventors: Fukatsu, Hiroshi; Murase, Satoshi; Katoh, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cephalosporin derivative having the formula: (I), wherein R1 is a substituted amino group R2 is an aryl or, heterocyclic group which may be substituted R3 is a, hydrogen atom, a negative charge or a residue of an ester which can form a pharmaceutically acceptable hydrolyzable in a living body and X is an alkylene group; or a pharmaceutically acceptable salt thereof a process, for its preparation and an antibacterial agent comprising thereof. The cephalosporin of this invention is useful in the pharmaceutical fields and, particularly as antibacterial, agents.
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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 September 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 2009.
- 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.