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Expired Canadian patentCanada

Method of humidification and apparatus

CA 2443044 C · Owner: Stryker Corporation · Inventors: Champagne, Real

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 invention relates to in a process for increasing a relative humidity in an enclosed space, from a first relative humidity to a target relative humidity by increasing the relative humidity, in a plurality of graduated steps. The process is particularly useful in a process for sterilization, with humidified ozone. The invention also relates to an apparatus for effecting a humidified, ozone sterilization.

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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 September 26, 2003 and granted October 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 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.
FiledSeptember 26, 2003
GrantedOctober 4, 2011
Term endedSeptember 26, 2023
Patent numberCA 2443044 C
Classification (IPC)A61L2/20 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedSep 26, 2003Patent grantedOct 4, 2011Term endedSep 26, 2023

Sources & verification

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