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Tomohiro Oka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Zero cross detection circuit and sensor device
    • Patent number 10,908,193
    • Issue date Feb 2, 2021
    • ABLIC INC.
    • Minoru Ariyama
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Switch circuit
    • Patent number 9,571,094
    • Issue date Feb 14, 2017
    • SII SEMICONDUCTOR CORPORATION
    • Naohiro Hiraoka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Semiconductor device
    • Patent number 9,274,170
    • Issue date Mar 1, 2016
    • Seiko Instruments Inc.
    • Tomohiro Oka
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Boosting circuit
    • Patent number 9,054,683
    • Issue date Jun 9, 2015
    • Seiko Instruments Inc.
    • Masaya Murata
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Power-on reset circuit
    • Patent number 8,797,070
    • Issue date Aug 5, 2014
    • Seiko Instruments Inc.
    • Tomohiro Oka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Boosting circuit
    • Patent number 8,203,378
    • Issue date Jun 19, 2012
    • Seiko Instruments Inc.
    • Ayaka Otani
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Memory circuit and voltage detection circuit including the same
    • Patent number 8,179,729
    • Issue date May 15, 2012
    • Seiko Instruments Inc.
    • Kotaro Watanabe
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Voltage switching circuit
    • Patent number 7,911,259
    • Issue date Mar 22, 2011
    • Seiko Instruments Inc.
    • Tomohiro Oka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Semiconductor memory device
    • Patent number 7,835,188
    • Issue date Nov 16, 2010
    • Seiko Instruments Inc.
    • Yutaka Satou
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Boosting and step-down switching regulator controlling circuit and...
    • Patent number 6,580,253
    • Issue date Jun 17, 2003
    • Seiko Instruments Inc.
    • Yoshihide Kanakubo
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    ZERO CROSS DETECTION CIRCUIT AND SENSOR DEVICE
    • Publication number 20190324066
    • Publication date Oct 24, 2019
    • ABLIC Inc.
    • Minoru ARIYAMA
    • G01 - MEASURING TESTING
  • Information Patent Application

    SWITCH CIRCUIT
    • Publication number 20160218710
    • Publication date Jul 28, 2016
    • SEIKO INSTRUMENTS INC.
    • Naohiro Hiraoka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    SEMICONDUCTOR DEVICE
    • Publication number 20140325300
    • Publication date Oct 30, 2014
    • SEIKO INSTRUMENTS INC.
    • Tomohiro OKA
    • G01 - MEASURING TESTING
  • Information Patent Application

    BOOSTING CIRCUIT
    • Publication number 20130234768
    • Publication date Sep 12, 2013
    • SEIKO INSTRUMENTS INC.
    • Masaya MURATA
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    POWER-ON RESET CIRCUIT
    • Publication number 20130194011
    • Publication date Aug 1, 2013
    • SEIKO INSTRUMENTS INC.
    • Tomohiro Oka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    MEMORY CIRCUIT AND VOLTAGE DETECTION CIRCUIT INCLUDING THE SAME
    • Publication number 20110032776
    • Publication date Feb 10, 2011
    • Kotaro Watanabe
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    BOOSTING CIRCUIT
    • Publication number 20100214011
    • Publication date Aug 26, 2010
    • Ayaka Otani
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Booster circuit
    • Publication number 20100123512
    • Publication date May 20, 2010
    • Yasushi Imai
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    VOLTAGE SWITCHING CIRCUIT
    • Publication number 20100013547
    • Publication date Jan 21, 2010
    • Tomohiro Oka
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    SEMICONDUCTOR MEMORY DEVICE
    • Publication number 20090190407
    • Publication date Jul 30, 2009
    • Yutaka Satou
    • G11 - INFORMATION STORAGE
  • Information Patent Application

    Switching power source apparatus
    • Publication number 20070210776
    • Publication date Sep 13, 2007
    • SEIKO INSTRUMENTS INC.
    • Tomohiro Oka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Boosting and step-down switching regulator controlling circuit and...
    • Publication number 20030052654
    • Publication date Mar 20, 2003
    • Yoshihide Kanakubo
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER