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Expired Canadian patentCanada

Inflammatory cytokine release inhibitor

CA 2431083 C · Owner: Sotome, Tomomi · Inventors: Sotome, Tomomi; Nagano, Tatsuo; Itai, Akiko

CIPO record

Overview

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

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Abstract From the Canadian patent

A medicament having inhibitory activity against NF- .kappa. B activation which , comprises a compound represented by the following general formula (I) or a pharmacologically acceptable salt as an active ingredient: (see formula I) , wherein X represents a connecting group A represents hydrogen atom or acetyl , group E represents an aryl group or a heteroaryl group and ring X represents an , arene or a heteroarene.

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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 December 18, 2001 and granted August 9, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2023.
  • 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 18, 2001
GrantedAugust 9, 2011
Term endedDecember 18, 2021
Patent numberCA 2431083 C
Classification (IPC)C07D277/32 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedDec 18, 2001Patent grantedAug 9, 2011Term endedDec 18, 2021

Sources & verification

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