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Fumiyuki Yamaoka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Shock absorber
    • Patent number 11,867,253
    • Issue date Jan 9, 2024
    • HITACHI ASTEMO, LTD.
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Shock absorber
    • Patent number 10,876,589
    • Issue date Dec 29, 2020
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Damper and method of assembling damper
    • Patent number 10,352,390
    • Issue date Jul 16, 2019
    • Hitachi Automotive Systems, Ltd.
    • Kengo Hase
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shock absorber-equipped vehicle
    • Patent number 10,343,477
    • Issue date Jul 9, 2019
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Damping force control type shock absorber
    • Patent number 9,810,281
    • Issue date Nov 7, 2017
    • Hitachi Automotive Systems, Ltd.
    • Shunsuke Mori
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Suspension device
    • Patent number 9,500,256
    • Issue date Nov 22, 2016
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Shock absorber
    • Patent number 9,309,945
    • Issue date Apr 12, 2016
    • Hitachi Automotive Systems, Ltd.
    • Atsushi Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Joined body, shock absorber, and method for manufacturing shock abs...
    • Patent number 9,234,559
    • Issue date Jan 12, 2016
    • Hitachi Automotive Systems, Ltd.
    • Yusuke Maegawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shock absorber
    • Patent number 9,139,065
    • Issue date Sep 22, 2015
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Damping force control type shock absorber
    • Patent number 8,794,405
    • Issue date Aug 5, 2014
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Shock absorber
    • Patent number 8,746,423
    • Issue date Jun 10, 2014
    • Hitachi Automotive Systems, Ltd.
    • Atsushi Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shock absorber
    • Patent number 8,695,766
    • Issue date Apr 15, 2014
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shock absorber
    • Patent number 8,651,252
    • Issue date Feb 18, 2014
    • Hitachi Automotive Systems, Ltd.
    • Yohei Katayama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Shock absorber
    • Patent number 8,590,680
    • Issue date Nov 26, 2013
    • Hitachi Automotive Systems, Ltd.
    • Atsushi Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electric power steering system
    • Patent number 7,290,638
    • Issue date Nov 6, 2007
    • Hitachi, Ltd.
    • Kohtaro Shiino
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Vehicular suspension rigidity controlling apparatus and method with...
    • Patent number 6,711,482
    • Issue date Mar 23, 2004
    • Hitachi Unisia Automotive, Ltd.
    • Kohtaro Shiino
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic damper
    • Patent number 6,547,046
    • Issue date Apr 15, 2003
    • Unisia Jecs Corporation
    • Hiroyuki Yamaguchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Rotary damper
    • Patent number 6,098,765
    • Issue date Aug 8, 2000
    • Unisia Jecs Corporation
    • Hiroshi Kato
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Automotive suspension control system utilizing variable damping for...
    • Patent number 5,526,262
    • Issue date Jun 11, 1996
    • Atsugi Unisia Corporation
    • Makoto Kimura
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    System for controlling damping force characteristic of shock absorb...
    • Patent number 5,510,985
    • Issue date Apr 23, 1996
    • Unisia Jecs Corporation
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Apparatus for controlling damping coefficient for vehicular shock a...
    • Patent number 5,446,663
    • Issue date Aug 29, 1995
    • Atsugi Unisia Corporation
    • Mitsuo Sasaki
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    System for controlling damping force characteristic of shock absorb...
    • Patent number 5,440,488
    • Issue date Aug 8, 1995
    • Unisia Jecs Corporation
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Apparatus for controlling damping coefficient of vehicular shock ab...
    • Patent number 5,398,184
    • Issue date Mar 14, 1995
    • Atsugi Unisia Corp.
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Automotive suspension system for anti-rolling control
    • Patent number 5,322,318
    • Issue date Jun 21, 1994
    • Atsugi Unisia Corporation
    • Makoto Kimura
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Hydraulic shock absorber
    • Patent number 5,316,113
    • Issue date May 31, 1994
    • Atsugi Motor Parts Company Ltd
    • Fumiyuki Yamaoka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electromagnetic suspension device
    • Patent number 5,293,969
    • Issue date Mar 15, 1994
    • Atsugi Unisia Corporation
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Variable damping-characteristics shock absorber with adjustable ori...
    • Patent number 5,277,283
    • Issue date Jan 11, 1994
    • Atsugi Unisia Corporation
    • Fumiyuki Yamaoka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electromagnetic strut assembly
    • Patent number 5,263,558
    • Issue date Nov 23, 1993
    • Atsugi Unisia Corporation
    • Fumiyuki Yamaoka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Vibration mode responsive variable damping force shock absorber wit...
    • Patent number 5,261,448
    • Issue date Nov 16, 1993
    • Atsugi Unisia Corp.
    • Takayuki Furuya
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Vehicle hydraulic shock absorber having low friction seal
    • Patent number 5,246,092
    • Issue date Sep 21, 1993
    • Atsugi Unisia Corporation
    • Fumiyuki Yamaoka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20230167871
    • Publication date Jun 1, 2023
    • Hitachi Astemo, Ltd.
    • Fumiyuki YAMAOKA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20220065321
    • Publication date Mar 3, 2022
    • Hitachi Astemo, Ltd.
    • Fumiyuki YAMAOKA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    DAMPING FORCE ADJUSTABLE SHOCK ABSORBER
    • Publication number 20210207679
    • Publication date Jul 8, 2021
    • Hitachi Automotive Systems, Ltd.
    • Mikio YAMASHITA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20180245660
    • Publication date Aug 30, 2018
    • Hitachi Automotive Systems, Ltd.
    • Mikio YAMASHITA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    DAMPER AND METHOD OF ASSEMBLING DAMPER
    • Publication number 20180094692
    • Publication date Apr 5, 2018
    • Kengo HASE
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    DAMPING FORCE CONTROL TYPE SHOCK ABSORBER
    • Publication number 20160195152
    • Publication date Jul 7, 2016
    • Hitachi Automotive Systems, Ltd.
    • Shunsuke MORI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER-EQUIPPED VEHICLE
    • Publication number 20160031284
    • Publication date Feb 4, 2016
    • Hitachi Automotive Systems, Ltd.
    • Mikio YAMASHITA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SUSPENSION DEVICE
    • Publication number 20150247547
    • Publication date Sep 3, 2015
    • Hitachi Automotive Systems, Ltd.
    • Mikio Yamashita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20140252735
    • Publication date Sep 11, 2014
    • Mikio Yamashita
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    ELECTROMAGNETIC SUSPENSION APPARATUS
    • Publication number 20140238793
    • Publication date Aug 28, 2014
    • Hitachi Automotive Systems, Ltd.
    • Shogo NANBARA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20140231201
    • Publication date Aug 21, 2014
    • Hitachi Automotive Systems, Ltd.
    • ATSUSHI MAEDA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    JOINED BODY, SHOCK ABSORBER, AND METHOD FOR MANUFACTURING SHOCK ABS...
    • Publication number 20130161141
    • Publication date Jun 27, 2013
    • Hitachi Automotive Systems, Ltd.
    • Yusuke MAEGAWA
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20120248670
    • Publication date Oct 4, 2012
    • Mikio Yamashita
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    DAMPING FORCE CONTROL TYPE SHOCK ABSORBER
    • Publication number 20120160620
    • Publication date Jun 28, 2012
    • Mikio YAMASHITA
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20120160624
    • Publication date Jun 28, 2012
    • Yohei KATAYAMA
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20110214953
    • Publication date Sep 8, 2011
    • Atsushi Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SHOCK ABSORBER
    • Publication number 20110214955
    • Publication date Sep 8, 2011
    • Atsushi Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Electric power steering system
    • Publication number 20050257992
    • Publication date Nov 24, 2005
    • Hitachi, Ltd.
    • Kohtaro Shiino
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Power steering device of electric motor type
    • Publication number 20050178608
    • Publication date Aug 18, 2005
    • Hitachi, Ltd.
    • Kohtaro Shiino
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Application

    Structure and method of coupling shaft member and cylindrical member
    • Publication number 20040081509
    • Publication date Apr 29, 2004
    • HITACHI UNISIA AUTIMOTIVE LTD.
    • Kohei Yamanaka
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Vehicular suspension rigidity controlling apparatus and method with...
    • Publication number 20030204293
    • Publication date Oct 30, 2003
    • HITACHI UNISIA AUTOMOTIVE, LTD.
    • Kohtaro Shiino
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Hydraulic damper
    • Publication number 20010023638
    • Publication date Sep 27, 2001
    • UNISIA JECS CORPORATION
    • Hiroyuki Yamaguchi
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...