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Expired Canadian patentCanada

5-cyanopyridine-2-diazohydroxide, basic salts and methods for production and use

CA 1255654 A · Owner: Board Of Trustees Of The University Of Alabama · Inventors: Hand, Elli S.; Baker, David C.

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

The title compounds are provided as well as a method for their production, pharmaceutical compositions comprising the compounds, and methods of treatment using the compounds in dosage form. The compounds of the invention have pharmacological properties and are useful cytostatic agents and cell growth inhibiting 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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 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 13, 1985
GrantedJune 13, 1989
Term endedJune 13, 2006
Patent numberCA 1255654 A
Classification (IPC)C07D213/84 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 13, 1985Patent grantedJune 13, 1989Term endedJune 13, 2006

Sources & verification

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