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Expired Canadian patentCanada

Substituted 1-oxo-2-phenyl-2-(2-alkylaminoethyl)-1,2, 3,4,-tetrahydronaphthalenes, their preparation and their use

CA 1249589 A · Owner: Basf Aktiengesellschaft · Inventors: Traut, Martin; Hofmann, Hans P.; Teschendorf, Hans-Juergen

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Abstract From the Canadian patent

1-Oxo-2-phenyl-2-(2-alkylaminoethyl)-1,2 3,4-tetrahydronaphthalenes of the formula I I, where R1 and R2 are identical or different and are each hydrogen, halogen, trifluoromethyl, C1-C4-alkyl or C1- C4-alkoxy, R3 is C1-C6-alkyl and R4 is hydrogen C1-, C6-alkyl or benzyl, or R3 and R4 together may furthermore be a C2-C5-alkylene chain, and their salts with physiologically tolerated acids, and their preparation are described. These novel compounds are useful active compounds for treating disorders.

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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 January 31, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 23, 1983
GrantedJanuary 31, 1989
Term endedJanuary 31, 2006
Patent numberCA 1249589 A
Classification (IPC)C07D295/10 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedNov 23, 1983Patent grantedJan 31, 1989Term endedJan 31, 2006

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