.beta.-LACTAM ANTIBIOTICS, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS MEDICAMENTS
CA 1280408 C · Owner: Metzger, Karl G. · Inventors: Schmidt, Gunter; Metzger, Karl G.; Zeiler, Hans-Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Antibacterially active and animal growth-regulating novel .beta.-lactam compounds of the formula (I), in which, R1 represents an optionally substituted radical of the formula, or , Z represents oxygen, sulphur or -N-R13 and, A represents the group, or
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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.