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Expired Canadian patentCanada

Low pressure hydrogen peroxide vapor sterilization system

CA 1310169 C · Owner: Jacobs, Paul T. · Inventors: Addy, Tralance O.; Jacobs, Paul T.; Lin, Szu-Min

CIPO record

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Abstract From the Canadian patent

A low-pressure vapor sterilization process which employs hydrogen peroxide vapor as the active agent. In the process, the article to be sterilized is placed in a chamber and the chamber evacuated to a pressure of less than about 20 torr. Aqueous hydrogen peroxide is added to the chamber and allowed to vaporize. The chamber is maintained at a pressure below the vapor pressure of the hydrogen peroxide and at a temperature of less than about 40°C. for a period of time sufficient to achieve sterilization of the article.

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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

  • Granted November 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 2009.
  • 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 28, 1988
GrantedNovember 17, 1992
Term endedNovember 17, 2009
Patent numberCA 1310169 C
Classification (IPC)A61L2/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 28, 1988Patent grantedNov 17, 1992Term endedNov 17, 2009

Sources & verification

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