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Expired Canadian patentCanada

Substituted 4-(((2-thienyl)methyl)amino) benzoic acids and a method for treating hypolipidemia

CA 1108159 A · Owner: The Dow Chemical Company · Inventors: Matthews, Donald P.; Wagner, Eugene R.

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Abstract From the Canadian patent

The invention relates to novel substituted 4-(2- -thienylmethylamino)-benzoic acid compounds a hypolipidemic, composition containing same and a process for preparing the, compounds. The compounds correspond to the formula wherein R is hydrogen or C1-3 alkyl, and X Y, and Z, independently represent hydrogen chloro, or bromo, with the, proviso that at least one of X Y, and Z is chloro or bromo, and pharmaceutically acceptable salts thereof. The compounds are useful for lowering serum lipid levels in mammals. 18,307-F

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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 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 6, 1978
GrantedSeptember 1, 1981
Term endedSeptember 1, 1998
Patent numberCA 1108159 A
Classification (IPC)C07D333/28

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 6, 1978Patent grantedSep 1, 1981Term endedSep 1, 1998

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