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Expired Canadian patentCanada

Patient interfacing system and method to prevent water contamination

CA 1325115 C · Owner: Coleman, Dennis L. · Inventors: Owen, Charles V.; De Nevers, Noel; Coleman, Dennis L.

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Abstract From the Canadian patent

Abstract, Described herein is a patient interfacing system for sampling the inspired and expired gases of a patient and removing moisture from the sample. In one embodiment of the present invention, a patient link receives the gases from the patient's airway circuit and a vaporization section vaporizes condensed moisture in the sample. A separator section allows the vaporized moisture component of the sample to exit the patient interfacing system before the gas sample reaches the monitoring instrument. A filter may also be utilized to prevent condensed moisture particulates and liquids from entering the monitoring instrument. Thus, the patient interfacing system of the present invention …

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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 December 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 19, 1989
GrantedDecember 14, 1993
Term endedDecember 14, 2010
Patent numberCA 1325115 C
Classification (IPC)A61B5/08 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 19, 1989Patent grantedDec 14, 1993Term endedDec 14, 2010

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