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Seiji ISHIDA

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  • Hitachinaka-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Construction machine
    • Patent number 11,220,803
    • Issue date Jan 11, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Makoto Ishijima
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Electricity storage device controller, electric system and construc...
    • Patent number 11,198,352
    • Issue date Dec 14, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Itaru Naya
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 11,149,409
    • Issue date Oct 19, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Itaru Naya
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Work machine
    • Patent number 11,053,661
    • Issue date Jul 6, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Jun Kikuchi
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hybrid construction machinery
    • Patent number 10,450,723
    • Issue date Oct 22, 2019
    • Hitachi Construction Machinery Co., Ltd.
    • Tadashi Osaka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hybrid construction machine
    • Patent number 10,150,465
    • Issue date Dec 11, 2018
    • Hitachi Construction Machinery Co., Ltd.
    • Masafumi Hita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hybrid work machine
    • Patent number 10,060,095
    • Issue date Aug 28, 2018
    • Hitachi Construction Machinery Co., Ltd.
    • Shinya Imura
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Control device of construction machine
    • Patent number 10,047,501
    • Issue date Aug 14, 2018
    • Hitachi Construction Machinery Co., Ltd.
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 9,617,715
    • Issue date Apr 11, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Generator motor and electric vehicle using same
    • Patent number 9,431,879
    • Issue date Aug 30, 2016
    • Hitachi Construction Machinery Co., Ltd.
    • Satoshi Kikuchi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine
    • Patent number 9,421,873
    • Issue date Aug 23, 2016
    • Hitachi Construction Machinery Co., Ltd.
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic working machine
    • Patent number 9,399,856
    • Issue date Jul 26, 2016
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuo Fujishima
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Driving system for railroad vehicle
    • Patent number 9,108,645
    • Issue date Aug 18, 2015
    • Hitachi, Ltd.
    • Motomi Shimada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hybrid construction machine
    • Patent number 9,065,361
    • Issue date Jun 23, 2015
    • Hitachi Construction Machinery Co., Ltd.
    • Shinji Ishihara
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Construction machine having swing body
    • Patent number 9,020,707
    • Issue date Apr 28, 2015
    • Hitachi Construction Machinery Co., Ltd.
    • Shinya Imura
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hybrid construction machine
    • Patent number 8,950,180
    • Issue date Feb 10, 2015
    • Hitachi Construction Machinery Co., Ltd.
    • Takatoshi Ooki
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Hybrid construction machine
    • Patent number 8,924,100
    • Issue date Dec 30, 2014
    • Hitachi Construction Machinery Co., Ltd.
    • Shinya Imura
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Pulse width modulation method for a power converter
    • Patent number 7,920,395
    • Issue date Apr 5, 2011
    • Hitachi, Ltd.
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Gate driver circuit for switching device
    • Patent number 7,570,085
    • Issue date Aug 4, 2009
    • Hitachi, Ltd.
    • Katsumi Ishikawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Pulse width modulation method for a power converter
    • Patent number 7,433,403
    • Issue date Oct 7, 2008
    • Hitachi, Ltd.
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    PWM inverter with long carrier wave insertion
    • Patent number 6,704,212
    • Issue date Mar 9, 2004
    • Hitachi, Ltd.
    • Teiichi Furukawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Pulse width modulation method, pulse width modulator and power conv...
    • Patent number 6,657,412
    • Issue date Dec 2, 2003
    • Hitachi, Ltd.
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Control apparatus for power converter
    • Patent number 6,642,689
    • Issue date Nov 4, 2003
    • Hitachi, Ltd.
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Control apparatus of induction motor
    • Patent number 6,611,124
    • Issue date Aug 26, 2003
    • Hitachi, Ltd.
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Method for controlling a vehicle provided with an electric power co...
    • Patent number 6,556,460
    • Issue date Apr 29, 2003
    • Hitachi, Ltd.
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    PWM converter system
    • Patent number 6,556,464
    • Issue date Apr 29, 2003
    • Hitachi, Ltd.
    • Keijirou Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Inverter device
    • Patent number 6,496,397
    • Issue date Dec 17, 2002
    • Hitachi, Ltd.
    • Keijiro Sakai
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Heat exchanger tube for falling film evaporator
    • Patent number 6,173,762
    • Issue date Jan 16, 2001
    • Kabushiki Kaisha Kobe Seiko Sho
    • Seiji Ishida
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Device for controlling induction motor and method of controlling th...
    • Patent number 6,147,470
    • Issue date Nov 14, 2000
    • Hitachi, Ltd.
    • Hironori Ohashi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Inverter apparatus having operation specifications determined by ty...
    • Patent number 6,058,036
    • Issue date May 2, 2000
    • Hitachi, Ltd.
    • Tsunehiro Endo
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

  • Information Patent Application

    Drive System for Dump Truck
    • Publication number 20230373320
    • Publication date Nov 23, 2023
    • Hitachi Construction Machinery Co., Ltd.
    • Satoru KANEKO
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Drive System
    • Publication number 20230370008
    • Publication date Nov 16, 2023
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuo NISHIHAMA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Drive System
    • Publication number 20230253858
    • Publication date Aug 10, 2023
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuo NISHIHAMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Construction Machine
    • Publication number 20220274487
    • Publication date Sep 1, 2022
    • Hitachi Construction Machinery Co., Ltd.
    • Toshihiko WATANABE
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Construction Machine
    • Publication number 20210404146
    • Publication date Dec 30, 2021
    • Seiji ISHIDA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Construction Machine
    • Publication number 20210214920
    • Publication date Jul 15, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Itaru NAYA
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Construction Machine
    • Publication number 20210180293
    • Publication date Jun 17, 2021
    • Hitachi Construction Machinery Co., Ltd.
    • Makoto ISHIJIMA
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Electricity Storage Device Controller, Electric System and Construc...
    • Publication number 20200039339
    • Publication date Feb 6, 2020
    • Hitachi Construction Machinery Co., Ltd.
    • Itaru NAYA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    WORK MACHINE
    • Publication number 20190249391
    • Publication date Aug 15, 2019
    • Hitachi Construction Machinery Co., Ltd.
    • Jun KIKUCHI
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Hybrid Construction Machinery
    • Publication number 20180320338
    • Publication date Nov 8, 2018
    • Hitachi Construction Machinery Co., Ltd.
    • Tadashi OSAKA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Hybrid Construction Machinery
    • Publication number 20170291501
    • Publication date Oct 12, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Chiaki TAKAHASHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Hybrid Construction Machine
    • Publication number 20170274891
    • Publication date Sep 28, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Masafumi HITA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Hybrid Work Machine
    • Publication number 20170145658
    • Publication date May 25, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Shinya IMURA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONTROL DEVICE OF CONSTRUCTION MACHINE
    • Publication number 20170009427
    • Publication date Jan 12, 2017
    • Hitachi Construction Machinery Co., Ltd.
    • Seiji ISHIDA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20160153176
    • Publication date Jun 2, 2016
    • Hitachi Construction Machinery Co., Ltd.
    • Seiji ISHIDA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    GENERATOR MOTOR AND ELECTRIC VEHICLE USING SAME
    • Publication number 20140217842
    • Publication date Aug 7, 2014
    • Satoshi Kikuchi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20140188321
    • Publication date Jul 3, 2014
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20140147238
    • Publication date May 29, 2014
    • Shiho Izumi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE
    • Publication number 20140103874
    • Publication date Apr 17, 2014
    • Seiji Ishida
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    HYDRAULIC WORKING MACHINE
    • Publication number 20140020375
    • Publication date Jan 23, 2014
    • Hitachi Construction Machinery Co., Ltd.
    • Kazuo Fujishima
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    HYBRID CONSTRUCTION MACHINE
    • Publication number 20130197768
    • Publication date Aug 1, 2013
    • Shinya Imura
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    CONSTRUCTION MACHINE HAVING SWING BODY
    • Publication number 20130195597
    • Publication date Aug 1, 2013
    • Shinya Imura
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HYBRID CONSTRUCTION MACHINE
    • Publication number 20130193892
    • Publication date Aug 1, 2013
    • Shinji Ishihara
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    HYBRID CONSTRUCTION MACHINE
    • Publication number 20120240581
    • Publication date Sep 27, 2012
    • Hitachi Construction Machinery Co., Ltd.
    • Takatoshi OOKI
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    DRIVING SYSTEM FOR RAILROAD VEHICLE
    • Publication number 20120090499
    • Publication date Apr 19, 2012
    • Motomi Shimada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Pulse Width Modulation Method for a Power Converter
    • Publication number 20090040797
    • Publication date Feb 12, 2009
    • Hitachi, Ltd
    • Seiji ISHIDA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    GATE DRIVER CIRCUIT FOR SWITCHING DEVICE
    • Publication number 20070200613
    • Publication date Aug 30, 2007
    • Katsumi Ishikawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Aquarium-cleaning device utilizing formed charcoal
    • Publication number 20060054099
    • Publication date Mar 16, 2006
    • Asahi Breweries, Ltd.
    • Hiroyuki Okamoto
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Application

    Pulse width modulation method, pulse width modulator, power convers...
    • Publication number 20040131114
    • Publication date Jul 8, 2004
    • Seiji Ishida
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Method for modulating pulse width, power converter, and inverter
    • Publication number 20030142517
    • Publication date Jul 31, 2003
    • Hitachi, Ltd
    • Teiichi Furukawa
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER