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Canadian application, no grantCanada

Successive log video pad power detector and method

CA 2417539 A1 · Owner: Johnson, Kent K. · Inventors: Johnson, Kent K.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A power detector (16) which samples the output signal from a communications device and produces a control signal proportional to the transmit power level comprising a series of diode detectors where the sampled signal is divided between the diode detectors by an attenuator cascade.

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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 July 26, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 26, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 26, 2001
GrantedNo grant recorded
Term endedJuly 26, 2021
Patent numberCA 2417539 A1
Classification (IPC)H01Q11/12 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJuly 26, 2001Term endedJuly 26, 2021

Sources & verification

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