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Expired Canadian patentCanada

Substituted pyrimidoquinoxalines

CA 1296334 C · Owner: Jaxa-Chamiec, Albert Andrzej · Inventors: Ellames, George John; Jaxa-Chamiec, Albert Andrzej; Lawson, Kevin Robert

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Case No. 2445, ABSTRACT, This disclosure relates to a novel class of substituted quinoxaline derivatives. The disclosure further relates to pharmaceutical compositions containing such compounds and to the use of such compounds and compositions as anti-anaerobic 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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 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.
FiledAugust 14, 1987
GrantedFebruary 25, 1992
Term endedFebruary 25, 2009
Patent numberCA 1296334 C
Classification (IPC)C07D487/04 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 14, 1987Patent grantedFeb 25, 1992Term endedFeb 25, 2009

Sources & verification

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