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Expired Canadian patentCanada

Aqueous pharmaceutical composition containing s-(-)-9-fluoro-3-methyl-10-(4-methyl-1-piperazinyl -7-oxo-2,3,-dihydro-7h-pyridol1,2,3,-de1,4benzoxazine -6-carboxylic acid

CA 1309024 C · Owner: Daiichi Seiyaku Co. Ltd. · Inventors: Seki, Hiromitsu; Murata, Yukihiro

CIPO record

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Abstract From the Canadian patent

An aqueous pharmaceutical composition containing S-(-)-9-fluoro-3-methyl-10-(4-methyl-1 piperazinyl) 7-oxo-2,3-dihydro-7H-pyrido1,2,3-de1,4bezoxazine-6carboxylic acid as an active ingredient. The composition is provided in various dosage forms such as injections syrups, eye-drops, nasal drops, liquid preparation for animal, etc. for the treatment and prevention of various infections and suppurative diseases.

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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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.
FiledDecember 16, 1987
GrantedOctober 20, 1992
Term endedOctober 20, 2009
Patent numberCA 1309024 C
Classification (IPC)A61K31/53

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 16, 1987Patent grantedOct 20, 1992Term endedOct 20, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.