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Expired Canadian patentCanada

Method of inhibiting virus

CA 1316459 C · Owner: Fleet, George William John · Inventors: Fleet, George William John; Dwek, Raymond Allen; Rademacher, Thomas William

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

Abstract of the Disclosure, A method of inhibiting human immunodeficiency virus is disclosed which comprises administering to a patient infected with said virus a virally inhibitory effective amount of the N-butyl derivative of deoxynojirimycin or a pharmaceutically acceptable salt derivative thereof.

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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 April 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 20, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 20, 1988
GrantedApril 20, 1993
Term endedApril 20, 2010
Patent numberCA 1316459 C
Classification (IPC)A61K31/44

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 20, 1988Patent grantedApril 20, 1993Term endedApril 20, 2010

Sources & verification

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