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Expired Canadian patentCanada

Esters of 2-¬(4-quinolyl)amino -benzoic acids

CA 1103672 A · Owner: Synthelabo · Inventors: Dumas, Andre P.F.; Manoury, Philippe M.J.; Najer, Henry

CIPO record

Overview

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Abstract From the Canadian patent

The compounds of the formula in which R1 is chlorine, CF3, or -SCF3 and R2 is phenyl or phenyl substituted by one or two Cl CH3, CF3, OCF3, or SCF3 radicals, the phenyl being substituted when R1 is chlorine in the 7-position, and their salts have interesting analgesic and, anti-inflammatory properties.

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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 June 23, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 2, 1974
GrantedJune 23, 1981
Term endedJune 23, 1998
Patent numberCA 1103672 A
Classification (IPC)C07D401/12 +2 more

Timeline

Timeline From CIPO dates

19751978198119841987199019931996Application filedApril 2, 1974Patent grantedJune 23, 1981Term endedJune 23, 1998

Sources & verification

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