TREA

Parallel-T filters

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Industry

  • CPC
  • H03H11/1295
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Parent Industries

HELECTRICITY H03Electronic circuits H03HIMPEDANCE NETWORKS H03H11/00Networks using active elements

Current Industry

H03H11/1295Parallel-T filters
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Distortion measurement and correction system and method
    • Patent number 9,152,747
    • Issue date Oct 6, 2015
    • Xcerra Corporation
    • Richard Liggiero
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Chopper stabilized amplifier
    • Patent number 7,724,080
    • Issue date May 25, 2010
    • Intersil Americas Inc.
    • Gwilym Francis Luff
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Twin-T dual notch filter
    • Patent number 7,127,226
    • Issue date Oct 24, 2006
    • Matsushita Electric Industrial Co., Ltd.
    • Nigel J. Tolson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Band pass filter from two filters
    • Patent number 6,492,865
    • Issue date Dec 10, 2002
    • Acoustic Technologies, Inc.
    • Samuel L. Thomasson
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Separation of plural band pass filters
    • Patent number 6,404,278
    • Issue date Jun 11, 2002
    • Acoustic Technologies, Inc.
    • Justin L. Allen
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Band pass filter with improved group delay
    • Patent number 6,404,279
    • Issue date Jun 11, 2002
    • Acoustic Technologies, Inc.
    • Samuel L. Thomasson
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Band pass filter from two notch filters
    • Patent number 6,268,766
    • Issue date Jul 31, 2001
    • Acoustic Technologies, Inc.
    • Samuel L. Thomasson
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Survival seismic detection system having improved tunable filter
    • Patent number 5,134,591
    • Issue date Jul 28, 1992
    • Westinghouse Electric Corp.
    • Jay S. Harmeling
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Second order active filters
    • Patent number 4,994,693
    • Issue date Feb 19, 1991
    • Northern Telecom Limited
    • Petre Popescu
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Bandpass amplifier and receiver using bandpass amplifier
    • Patent number 4,984,292
    • Issue date Jan 8, 1991
    • Correpro (Canada) Inc.
    • Ted I. Millen
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Integrated filter circuit having switchable selected parallel filte...
    • Patent number 4,724,407
    • Issue date Feb 9, 1988
    • Hitachi, Ltd.
    • Kuniaki Miura
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    RC-Active filters
    • Patent number 4,553,103
    • Issue date Nov 12, 1985
    • British Telecommunications
    • John M. Rollett
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3909549
    • Patent number 3,909,549
    • Issue date Sep 30, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3904978
    • Patent number 3,904,978
    • Issue date Sep 9, 1975
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3842362
    • Patent number 3,842,362
    • Issue date Oct 15, 1974
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3831103
    • Patent number 3,831,103
    • Issue date Aug 20, 1974
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3793593
    • Patent number 3,793,593
    • Issue date Feb 19, 1974
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3745376
    • Patent number 3,745,376
    • Issue date Jul 10, 1973
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3725802
    • Patent number 3,725,802
    • Issue date Apr 3, 1973
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3714603
    • Patent number 3,714,603
    • Issue date Jan 30, 1973
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3648187
    • Patent number 3,648,187
    • Issue date Mar 7, 1972
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3602833
    • Patent number 3,602,833
    • Issue date Aug 31, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3586990
    • Patent number 3,586,990
    • Issue date Jun 22, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3579135
    • Patent number 3,579,135
    • Issue date May 18, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3577179
    • Patent number 3,577,179
    • Issue date May 4, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3566284
    • Patent number 3,566,284
    • Issue date Feb 23, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3550026
    • Patent number 3,550,026
    • Issue date Dec 22, 1970
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3550027
    • Patent number 3,550,027
    • Issue date Dec 22, 1970
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3541463
    • Patent number 3,541,463
    • Issue date Nov 17, 1970
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3535456
    • Patent number 3,535,456
    • Issue date Oct 20, 1970
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    CHOPPER STABILIZED AMPLIFIER
    • Publication number 20090309653
    • Publication date Dec 17, 2009
    • Intersil Americas Inc.
    • Gwilym Francis Luff
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Twin-T dual notch filter
    • Publication number 20030125004
    • Publication date Jul 3, 2003
    • Tropian, Inc.
    • Nigel J. Tolson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Band pass filter with improved group delay
    • Publication number 20020000874
    • Publication date Jan 3, 2002
    • Samuel L. Thomasson
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Separation of plural band pass filters
    • Publication number 20020000875
    • Publication date Jan 3, 2002
    • Justin L. Allen
    • H03 - BASIC ELECTRONIC CIRCUITRY