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Expired Canadian patentCanada

Halogen pyrazoles derivatives, a method for producing these halogen pyrazole derivatives and medicaments containing them

CA 1048499 A · Owner: Byk Gulden Lomberg Chemische Fabrik Gesellschaft Mit Beschrankter Haftun G · Inventors: Rainer, Georg

CIPO record

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Abstract From the Canadian patent

The invention relates to pharmaceutically valuable halogen pyrazole derivatives, a method for producing them and medicaments which contain these active substances. The derivatives are of the general formula I I, in which Ph1 and Ph2 are the same or different phenyl radicals and halogen, denotes a fluorine, chlorine or bromine atom and their salts.

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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 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 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—
GrantedFebruary 13, 1979
Term endedFebruary 13, 1996
Patent numberCA 1048499 A
Classification (IPC)C07D231/16 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 13, 1979Term endedFeb 13, 1996

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