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Hirokazu Yoshizawa

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  • Chiba-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Amplifier circuit
    • Patent number 7,508,258
    • Issue date Mar 24, 2009
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Chopper amplifier circuit and semiconductor device
    • Patent number 7,479,826
    • Issue date Jan 20, 2009
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Semiconductor device with transistors that convert a voltage differ...
    • Patent number 6,713,815
    • Issue date Mar 30, 2004
    • Seiko Instruments Inc.
    • Fumiyasu Utsunomiya
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Inverter circuit
    • Patent number 6,542,007
    • Issue date Apr 1, 2003
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    AD converter circuit
    • Patent number 6,437,722
    • Issue date Aug 20, 2002
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Reset circuit
    • Patent number 6,351,163
    • Issue date Feb 26, 2002
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    A/D converter circuit having ladder resistor network with alternati...
    • Patent number 6,288,662
    • Issue date Sep 11, 2001
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Switched-capacitor amplifier circuit
    • Patent number 6,037,836
    • Issue date Mar 14, 2000
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    CR oscillating circuit
    • Patent number 5,982,247
    • Issue date Nov 9, 1999
    • Seiko Instruments Inc.
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

  • Information Patent Application

    Amplifier circuit
    • Publication number 20070222509
    • Publication date Sep 27, 2007
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Chopper amplifier circuit and semiconductor device
    • Publication number 20070146065
    • Publication date Jun 28, 2007
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Switched capacitor amplifier circuit and electronic device
    • Publication number 20040130377
    • Publication date Jul 8, 2004
    • Akira Takeda
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Semiconductor device
    • Publication number 20020175373
    • Publication date Nov 28, 2002
    • Fumiyasu Utsunomiya
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Inverter circuit
    • Publication number 20020153926
    • Publication date Oct 24, 2002
    • Hirokazu Yoshizawa
    • H03 - BASIC ELECTRONIC CIRCUITRY