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Expired Canadian patentCanada

Temperature compensated power detector

CA 2298926 C · Owner: Lemay, Normand T. Jr. · Inventors: Sadowski, Eric; Lemay, Normand T. Jr.

CIPO record

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Abstract From the Canadian patent

A temperature compensated power detector generally comprises a detector circuit portion, which includes a detector diode and a temperature , compensation, circuit portion which includes a temperature compensation diode that is , operably, connected to the detector circuit portion. The detector diode and the temperature, compensation diode are connected in DC series with each other and develop substantially identical voltage drops. The detector circuit portion operates to detect a, voltage from a power input. However the detected voltage is subject to , alteration due to temperature variations. The temperature compensation circuit portion develops a, voltage that is also subject to …

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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 February 17, 2000 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 17, 2000
GrantedDecember 31, 2002
Term endedFebruary 17, 2020
Patent numberCA 2298926 C
Classification (IPC)G01R21/14 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedFeb 17, 2000Patent grantedDec 31, 2002Term endedFeb 17, 2020

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