TREA

Toshiaki Fukushima

Follow

Person

  • Tokorozawa, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Step motor drive device and circuit
    • Patent number 11,422,511
    • Issue date Aug 23, 2022
    • Citizen Watch Co., Ltd.
    • Yu Takyoh
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Drive circuit for two-coil step motor
    • Patent number 11,086,273
    • Issue date Aug 10, 2021
    • Citizen Watch Co., Ltd.
    • Yu Takyoh
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electronic watch
    • Patent number 10,754,299
    • Issue date Aug 25, 2020
    • Citizen Watch Co., Ltd.
    • Yu Takyoh
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Drive circuit for two-coil step motor, two-coil step motor, and ele...
    • Patent number 10,545,459
    • Issue date Jan 28, 2020
    • Citizen Watch Co., Ltd.
    • Yu Takyoh
    • G04 - HOROLOGY
  • Information Patent Grant

    Drive circuit for two-coil step motor
    • Patent number 10,197,972
    • Issue date Feb 5, 2019
    • Citizen Watch Co., Ltd.
    • Toshiaki Fukushima
    • G04 - HOROLOGY
  • Information Patent Grant

    Electronic timepiece
    • Patent number 9,690,259
    • Issue date Jun 27, 2017
    • Citizen Watch Co., Ltd.
    • Yu Takyo
    • G04 - HOROLOGY
  • Information Patent Grant

    Wrist watch oscillating step motor with sweep motion
    • Patent number 9,529,330
    • Issue date Dec 27, 2016
    • Citizen Holdings Co., Ltd.
    • Toshiaki Fukushima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electronic watch
    • Patent number 8,841,875
    • Issue date Sep 23, 2014
    • Citizen Holdings Co., Ltd.
    • Yu Takyo
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Actuator device
    • Patent number 7,015,778
    • Issue date Mar 21, 2006
    • Citizen Watch Co., Ltd.
    • Toshiaki Fukushima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Actuator apparatus
    • Patent number 6,829,076
    • Issue date Dec 7, 2004
    • Citizen Watch Co., Ltd.
    • Toshiaki Fukushima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Liquid crystal device with adjustable light throughput
    • Patent number 6,115,091
    • Issue date Sep 5, 2000
    • Citizen Watch Co., Ltd.
    • Shinya Kondoh
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

  • Information Patent Application

    STEP MOTOR DRIVE DEVICE AND CIRCUIT
    • Publication number 20200333749
    • Publication date Oct 22, 2020
    • CITIZEN WATCH CO., LTD.
    • Yu TAKYOH
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DRIVE CIRCUIT FOR TWO-COIL STEP MOTOR
    • Publication number 20200019124
    • Publication date Jan 16, 2020
    • CITIZEN WATCH CO., LTD.
    • Yu TAKYOH
    • G04 - HOROLOGY
  • Information Patent Application

    ELECTRONIC WATCH
    • Publication number 20190041804
    • Publication date Feb 7, 2019
    • Citizen Watch Co., Ltd.
    • Yu TAKYOH
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DRIVE CIRCUIT FOR TWO-COIL STEP MOTOR, TWO-COIL STEP MOTOR, AND ELE...
    • Publication number 20180246471
    • Publication date Aug 30, 2018
    • Citizen Watch Co., Ltd.
    • Yu TAKYOH
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    DRIVE CIRCUIT FOR TWO-COIL STEP MOTOR
    • Publication number 20170357216
    • Publication date Dec 14, 2017
    • Citizen Watch Co., Ltd.
    • Toshiaki FUKUSHIMA
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRONIC TIMEPIECE
    • Publication number 20160216695
    • Publication date Jul 28, 2016
    • CITIZEN HOLDINGS CO., LTD.
    • Yu TAKYO
    • G04 - HOROLOGY
  • Information Patent Application

    OSCILLATING STEPPING MOTOR
    • Publication number 20130162060
    • Publication date Jun 27, 2013
    • Toshiaki Fukushima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    ELECTRONIC WATCH
    • Publication number 20120204640
    • Publication date Aug 16, 2012
    • CITIZEN WATCH CO., LTD
    • Yu Takyo
    • G04 - HOROLOGY
  • Information Patent Application

    Actuator device
    • Publication number 20040046625
    • Publication date Mar 11, 2004
    • Toshiaki Fukushima
    • G02 - OPTICS
  • Information Patent Application

    Actuator apparatus
    • Publication number 20030184186
    • Publication date Oct 2, 2003
    • Toshiaki Fukushima
    • G02 - OPTICS