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Expired Canadian patentCanada

System, detector and method for sensing a parameter of a medium by means of radiation attenuation

CA 1265875 C · Owner: Harshaw Chemical Company (The) · Inventors: Sicking, David H.; Tawil, Riad A.

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Abstract From the Canadian patent

A system and related method for sensing a parameter of a medium by means of radiation attenuation the system including a radiation, source for emitting radiation that will be attenuated as a function of the parameter upon passage through the medium and a radiation detector operatively positioned to detect the radiation that will be attenuated as aforesaid, and the system being further characterized by the detector comprising a sintillator probe for producing an electrical current output proportionally representative of detected radiation a current integrator for, continuously integrating the electrical current output of the sintillator probe, the current integrator having an input for …

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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 February 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 7, 1987
GrantedFebruary 13, 1990
Term endedFebruary 13, 2007
Patent numberCA 1265875 C
Classification (IPC)G01B21/08 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedJan 7, 1987Patent grantedFeb 13, 1990Term endedFeb 13, 2007

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