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Koichi YAHATA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Semiconductor element drive device and power conversion apparatus
    • Patent number 11,757,444
    • Issue date Sep 12, 2023
    • Hitachi Astemo, Ltd.
    • Hiroshi Suzuki
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Load driver
    • Patent number 11,671,089
    • Issue date Jun 6, 2023
    • Hitachi Astemo, Ltd.
    • Takeshi Ikuyama
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Power conversion device
    • Patent number 10,840,800
    • Issue date Nov 17, 2020
    • HITACHI AUTOMOTIVE SYSTEMS, LTD.
    • Satoshi Hiranuma
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Voltage detection apparatus
    • Patent number 9,964,579
    • Issue date May 8, 2018
    • Hitachi Automotive Systems, Ltd.
    • Hiroaki Igarashi
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Inverter drive device
    • Patent number 9,065,443
    • Issue date Jun 23, 2015
    • Hitachi Automotive Systems, Ltd.
    • Hiroki Shimano
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power inverter
    • Patent number 8,970,155
    • Issue date Mar 3, 2015
    • Hitachi Automotive Systems, Ltd.
    • Seiji Funaba
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Inverter device
    • Patent number 8,971,079
    • Issue date Mar 3, 2015
    • Hitachi Automotive Systems, Ltd.
    • Tetsuro Tateyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power conversion system
    • Patent number 8,791,681
    • Issue date Jul 29, 2014
    • Hitachi Automotive Systems, Ltd.
    • Yoshio Akaishi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Electric power conversion system and electric power conversion device
    • Patent number 8,471,507
    • Issue date Jun 25, 2013
    • Hitachi Automotive Systems, Ltd.
    • Yoshio Akaishi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power conversion device
    • Patent number 8,228,700
    • Issue date Jul 24, 2012
    • Hitachi Automotive Systems, Ltd.
    • Koichi Yahata
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power inverter
    • Patent number 8,040,088
    • Issue date Oct 18, 2011
    • Hitachi, Ltd.
    • Hiroshi Katayama
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power converter, power system provided with same, and mobile body
    • Patent number 7,859,105
    • Issue date Dec 28, 2010
    • Hitachi, Ltd.
    • Kinya Nakatsu
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power inverter
    • Patent number 7,719,838
    • Issue date May 18, 2010
    • Hitachi, Ltd.
    • Kenichiro Nakajima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power inverter
    • Patent number 7,561,448
    • Issue date Jul 14, 2009
    • Hitachi, Ltd.
    • Hiroshi Katayama
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power converter unit
    • Patent number 7,561,429
    • Issue date Jul 14, 2009
    • Hitachi, Ltd.
    • Koichi Yahata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    POWER CONVERSION APPARATUS
    • Publication number 20240424916
    • Publication date Dec 26, 2024
    • Hitachi Astemo, Ltd.
    • Takeshi IKUYAMA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    GATE DRIVE CIRCUIT AND POWER CONVERSION DEVICE
    • Publication number 20240072635
    • Publication date Feb 29, 2024
    • Hitachi Astemo, Ltd.
    • Trong Tao BUI
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    SEMICONDUCTOR ELEMENT DRIVE DEVICE AND POWER CONVERSION APPARATUS
    • Publication number 20230059002
    • Publication date Feb 23, 2023
    • HITACHI ASTEMO, LTD.
    • Hiroshi SUZUKI
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    LOAD DRIVER
    • Publication number 20220190817
    • Publication date Jun 16, 2022
    • HITACHI ASTEMO, LTD.
    • Takeshi IKUYAMA
    • G01 - MEASURING TESTING
  • Information Patent Application

    POWER CONVERSION DEVICE
    • Publication number 20190020263
    • Publication date Jan 17, 2019
    • Hitachi Automotive Systems, Ltd.
    • Satoshi HIRANUMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DIRECT-CURRENT SENSOR, ALTERNATING-CURRENT SENSOR, AND INVERTER HAV...
    • Publication number 20190013760
    • Publication date Jan 10, 2019
    • Hitachi Automotive Systems, Ltd.
    • Toshisada MITSUI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Voltage Detection Apparatus
    • Publication number 20170089969
    • Publication date Mar 30, 2017
    • Hitachi Automotive Systems, Ltd.
    • Hiroaki IGARASHI
    • G01 - MEASURING TESTING
  • Information Patent Application

    Inverter Drive Device
    • Publication number 20140085762
    • Publication date Mar 27, 2014
    • Hitachi Automotive Systems, Ltd.
    • Hiroki Shimano
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Inverter
    • Publication number 20130328514
    • Publication date Dec 12, 2013
    • Hitachi Automotive Systems, Ltd.
    • Seiji Funaba
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Power Converter
    • Publication number 20130088279
    • Publication date Apr 11, 2013
    • Hitachi Automotive Systems Ltd
    • Hiroki Shimano
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Inverter Device
    • Publication number 20130051099
    • Publication date Feb 28, 2013
    • Hitachi Automotive Systems, Ltd.
    • Tetsuro Tateyama
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Conversion Device
    • Publication number 20130033914
    • Publication date Feb 7, 2013
    • Hitachi Automotive Systems, Ltd.
    • Koichi Yahata
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Electric Power Conversion System
    • Publication number 20120020136
    • Publication date Jan 26, 2012
    • Hitachi Automotive Systems Ltd.
    • Yoshio Akaishi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Electric Power Conversion System and Electric Power Conversion Device
    • Publication number 20120001574
    • Publication date Jan 5, 2012
    • Hitachi Automotive Systems, Ltd.
    • Yoshio Akaishi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Power Conversion Device
    • Publication number 20110199800
    • Publication date Aug 18, 2011
    • Hitachi Automotive Systems, Ltd.
    • Koichi Yahata
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Power Inverter
    • Publication number 20090243524
    • Publication date Oct 1, 2009
    • HITACHI, LTD.
    • Hiroshi Katayama
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Power Converter Unit
    • Publication number 20090002974
    • Publication date Jan 1, 2009
    • Hitachi, Ltd
    • Koichi YAHATA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Power Inverter
    • Publication number 20080225487
    • Publication date Sep 18, 2008
    • Hitachi, Ltd
    • Kenichiro NAKAJIMA
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Power Converter Unit
    • Publication number 20080112201
    • Publication date May 15, 2008
    • Hitachi, Ltd
    • Koichi YAHATA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Power inverter
    • Publication number 20070246636
    • Publication date Oct 25, 2007
    • HITACHI, LTD.
    • Hiroshi Katayama
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Power converter, power system provided with same, and mobile body
    • Publication number 20050161809
    • Publication date Jul 28, 2005
    • Kinya Nakatsu
    • G01 - MEASURING TESTING