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Expired Canadian patentCanada

Biological test device for steam sterilizers

CA 1291929 C · Owner: Augurt, Thomas A. · Inventors: Dyckman, John; Zwarun, Andrew; Macaro, Louise

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure, A disposable package is adapted to simulate the steam permeability and other qualities of the linen pack previously used to test the functioning of a steam sterilizer using a biological test device. The biological test device comprises spores on an appropriate carrier, either in a self-contained biological device or as a spore strip. The biological test device is placed within applicant's specially constructed package and the package is placed within the sterilizer which is then, cycled through a conventional sterilization cycle. During the sterilization cycle, applicant's package simulates the standard sterilizer linen pack previously used for such tests. After …

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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 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 29, 1986
GrantedNovember 12, 1991
Term endedNovember 12, 2008
Patent numberCA 1291929 C
Classification (IPC)C12Q1/22 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 29, 1986Patent grantedNov 12, 1991Term endedNov 12, 2008

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