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Expired Canadian patentCanada

Fucosidase inhibitors

CA 2019798 C · Owner: Monsanto Company · Inventors: Namgoong, Sung Keon; Fleet, George William John

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

A fucosidase inhibitor selected from the group consisting of 1-.beta.-C-substituted deoxymannojirimycins in which the 1-.beta.-C substituent is an alkyl group having from one to six carbon atoms or phenyl and a method for the production of the same.

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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

  • Filed June 26, 1990 and granted March 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 26, 1990
GrantedMarch 20, 2001
Term endedJune 26, 2010
Patent numberCA 2019798 C
Classification (IPC)C07D211/46 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 26, 1990Patent grantedMarch 20, 2001Term endedJune 26, 2010

Sources & verification

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