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Expired Canadian patentCanada

Phenoxyalkane carboxylic acid derivative, method of producing it, and medicaments

CA 1066280 A · Owner: Ludwig Merckle K.G. Chem. Pharm. Fabrik · Inventors: Specker, Manfred; Metz, Gunter

CIPO record

Overview

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Abstract From the Canadian patent

This invention relates to compound of the formula (I), in which, R1 is a hydrogen atom, a lower alkyl group or a further p-chlorophenoxy group, and R2 is a hydrogen atom or a lower alkyl group. Those compounds are prepared by reacting cinnarizine of a derivative thereof with the appropriate chlorophenoxy acid. The products of formula (I) are useful as lipid serum-cholesterol and serum-triglyceride reducing agents.

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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 November 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedNovember 13, 1979
Term endedNovember 13, 1996
Patent numberCA 1066280 A
Classification (IPC)C07D295/14 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedNov 13, 1979Term endedNov 13, 1996

Sources & verification

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