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Expired Canadian patentCanada

Psychotropic polycyclic imides

CA 1306251 C · Owner: Stack, Gary P. · Inventors: Stack, Gary P.; Golobish, Thomas D.; Abou-Gharbia, Magid A.

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Abstract From the Canadian patent

Abstact of the Disclosure Substituted imides of the following formula are antipsychotic anxiolytic agents with very little extrapyramidal side effects: in which, X is -O-, -S-, -SO-, -SO2-, -CR3R4- where R3 and R4 independently, are, hydrogen, alkyl of 1 to 4 carbon atoms or taken together with the, carbon atom to which they are attached R3 and R4 form a, cycloalkyl group of 3 to 5 carbon atoms; n is one of the integers 2, 3, 4 or 5; R is phenyl, halophenyl, trifluoromethylphenyl alkoxyphenyl in which the, alkoxy substituent contains 1 to 3 carbon atoms 2-pyrimidinyl, halopyrimidin-2-yl, 2-pyrazinyl halopyrazin-2-yl, 2-pyridinyl, cyanopyridin-2-yl halopyridin-2-yl, quinolyl, or …

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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1988
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306251 C
Classification (IPC)C07D403/06 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 18, 1988Patent grantedAug 11, 1992Term endedAug 11, 2009

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