Antibacterial agent precursor and use of same
CA 1340292 C · Owner: Mich, Thomas F. · Inventors: Sanchez, Joseph P.; Mich, Thomas F.; Domagala, John M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel naphthyridine-, quinoline-carboxylic acid compounds are disclosed. These, compounds which are useful intermediates in the, preparation of antibacterial agents have the, following general structure. (see fig.I) wherein L is fluorine or chlorine;, X is CH CF, or N;, R1 is hydrogen, an alkyl having from one to six carbon atoms, or a cation;, R2 is a cycloalkyl of from three to six carbon atoms or a pharmaceutically acceptable acid addition salt thereof.
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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 December 29, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2015.
- 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.