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Expired Canadian patentCanada

Amplitude limiter

CA 2108252 C · Owner: Feldle, Heinz-Peter · Inventors: Schweizer, Bernhard; Feldle, Heinz-Peter

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

The invention concerns an HF-signal amplitude limiter with a wide variety of applications. HF signals with too high a gain are reflected and absorbed in the amplitude limiter. The assembly is preferably designed as a reliable and mechanically robust unit using strip line technology. The amplitude limiter proposed is preferably for use in the input of the receiver stage of an HF receiver in particular a radar, receiver and/or the transmit/receive module of an active (radar) antenna assembly. An amplitude limiter including an input power divider, first and second circuit branches each having an input end coupled to receive a split input signal and each being substantially identical …

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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 8, 1992 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2014.
  • 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 8, 1992
GrantedDecember 26, 2000
Term endedJuly 8, 2012
Patent numberCA 2108252 C
Classification (IPC)H03H7/24 +1 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJuly 8, 1992Patent grantedDec 26, 2000Term endedJuly 8, 2012

Sources & verification

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