TREA

Tsuneo Tohyama

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  • Tsurugashima, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Polar leapfrog filter
    • Patent number 5,298,813
    • Issue date Mar 29, 1994
    • Toko, Inc.
    • Hiroshi Tanigawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Polar leapfrog filter
    • Patent number 5,296,763
    • Issue date Mar 22, 1994
    • Toko, Inc.
    • Hiroshi Tanigawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Polar leapfrog filter
    • Patent number 5,293,086
    • Issue date Mar 8, 1994
    • Toko, Inc.
    • Hiroshi Tanigawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    All-pass filter
    • Patent number 5,258,716
    • Issue date Nov 2, 1993
    • Toko, Inc.
    • Hiroshi Kondo
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Variable time-constant type differentiator
    • Patent number 5,216,375
    • Issue date Jun 1, 1993
    • Toko, Inc.
    • Hiroshi Tanigawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Polar leapfrog filter
    • Patent number 5,182,522
    • Issue date Jan 26, 1993
    • Toko, Inc.
    • Hiroshi Tanigawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Active filter circuit
    • Patent number 5,177,382
    • Issue date Jan 5, 1993
    • Toko, Inc.
    • Hiroshi Kondo
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Leapfrog filter
    • Patent number 5,138,279
    • Issue date Aug 11, 1992
    • Toko, Inc.
    • Hiroshi Kondo
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Leapfrog filter having adjustable center frequency and quality factor
    • Patent number 5,028,884
    • Issue date Jul 2, 1991
    • Toko, Inc.
    • Hiroshi Kondo
    • H03 - BASIC ELECTRONIC CIRCUITRY