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Expired Canadian patentCanada

Quinoline carboxylic acid complexes with guanidinium carbonate

CA 1207773 A · Owner: Merck & Co. Inc. · Inventors: Pogany, Stefano A.; Haslam, John L.

CIPO record

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Abstract From the Canadian patent

This invention involves complexes of quinoline carboxylic acid derivatives with guanidine and guanidine carbonate. The complexes have a greater solubility and dissolution rate when compared to the parent quinoline carboxylic acid derivatives and thus are more effective anti bacterials than the parent acids.

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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 July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 4, 1983
GrantedJuly 15, 1986
Term endedJuly 15, 2003
Patent numberCA 1207773 A
Classification (IPC)C07D401/04 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 4, 1983Patent grantedJuly 15, 1986Term endedJuly 15, 2003

Sources & verification

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