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Expired Canadian patentCanada

Ciclesonide-containing sterile aqueous suspension

CA 2491724 C · Owner: Takanashi, Kazuya · Inventors: Takanashi, Kazuya; Uejima, Yasuhide; Nishibe, Yoshihisa

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

The present invention provides a ciclesonide-containing sterile aqueous suspension sterilized by autoclaving, wherein the concentration of ciclesonide after autoclaving is 95 % or more comparing to that before autoclaving. Also the present invention provides a method of manufacturing a ciclesonidecontaining sterile aqueous suspension comprising the step of sterilization by autoclaving a ciclesonide-containing aqueous suspension.

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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 July 2, 2003 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 2, 2003
GrantedApril 2, 2013
Term endedJuly 2, 2023
Patent numberCA 2491724 C
Classification (IPC)A61K31/58 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedJuly 2, 2003Patent grantedApril 2, 2013Term endedJuly 2, 2023

Sources & verification

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