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Expired Canadian patentCanada

Antifungal composition with enhanced bioavailability

CA 2255663 C · Owner: Sangekar, Surendra A. · Inventors: Sangekar, Surendra A.; Lee, Ping I.; Vadino, Winston A.

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 pharmaceutical composition comprising: i) an antifungal agent which is (-)- (2R-cis)-4-4-4-4--5-(2,4-difluorophenyl)-tetrahydro-5-(1H-1,2,4-triazol-1ylmethyl)furan-3-ylmethoxyphenyl-1-piperazinylphenyl-2,4-dihydro-2-(S)-1ethyl-2(S)-hydroxypropyl-3H-1,2,4-triazol-3-one; ii) at least one non-ionic surfactant; and iii) a diluent. The composition enables the antifungal compound, which has very low water solubility to have enhanced , bioavailability in mammals such as humans.

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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 May 21, 1997 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 21, 1997
GrantedAugust 20, 2002
Term endedMay 21, 2017
Patent numberCA 2255663 C
Classification (IPC)A61K31/49 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMay 21, 1997Patent grantedAug 20, 2002Term endedMay 21, 2017

Sources & verification

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