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Expired Canadian patentCanada

Real-time monitor and control system and method for hydrogen peroxide vapor decontamination

CA 2227757 C · Owner: Sparber, George · Inventors: Sparber, George; Zell, Peter; Stewart, Bonnie

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

The invention includes a system and a method for maintaining a selected concentration of a sterilant vapor during vapor phase sterilization. The system includes a sterilization chamber with a source of multicomponent vapor containing a sterilant vapor, an electromagnetic radiation source capable of generating radiation at a plurality of wavelengths a radiation detector for , detecting and quantitating the electromagnetic radiation absorbed at the wavelengths, the detector generating absorbance signals proportional to the concentration of the sterilant vapor in the multicomponent vapor a , microprocessor programmed to compare the absorbance signals with reference absorbance signals, …

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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 June 7, 1996 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 7, 1996
GrantedJuly 24, 2001
Term endedJune 7, 2016
Patent numberCA 2227757 C
Classification (IPC)A61L2/24 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJune 7, 1996Patent grantedJuly 24, 2001Term endedJune 7, 2016

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