Quinolinecarboxylic acid derivatives
CA 1316925 C · Owner: Matsuda, Masahito · Inventors: Ozaki, Masakuni; Kazuno, Kenji; Kise, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Quinolinecarboxylic acid derivatives of the formula (I) and pharmaceutically acceptable salts thereof wherein R1 is, hydrogen, straight or branch chain lower alkyl or phenyl unsubstituted or substituted by one or more halo moieties; R2 is hydrogen or straight or branch chain lower alkyl; and R3 is hydrogen, halo or straight or branch chain lower alkoxy are, useful for treating bacterial infections in humans and animals.
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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
- 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.