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Hirofumi Matsuoka

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  • Kyoto, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 6,594,568
    • Issue date Jul 15, 2003
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering apparatus
    • Patent number 6,250,418
    • Issue date Jun 26, 2001
    • Koyo Seiko Co., Ltd.
    • Yoshinobu Shimizu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering device
    • Patent number 6,233,930
    • Issue date May 22, 2001
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Power steering apparatus having compensation for delay of oil press...
    • Patent number 5,936,379
    • Issue date Aug 10, 1999
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,928,298
    • Issue date Jul 27, 1999
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering device
    • Patent number 5,844,386
    • Issue date Dec 1, 1998
    • Koyo Seiko Co. Ltd.
    • Hirofumi Matsuoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,835,872
    • Issue date Nov 10, 1998
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,765,661
    • Issue date Jun 16, 1998
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering apparatus
    • Patent number 5,762,159
    • Issue date Jun 9, 1998
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering apparatus
    • Patent number 5,737,223
    • Issue date Apr 7, 1998
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,600,559
    • Issue date Feb 4, 1997
    • Koyo Seiko Co., Ltd.
    • Mitsuhiko Nishimoto
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering apparatus for performing feedback control of motor-d...
    • Patent number 5,574,344
    • Issue date Nov 12, 1996
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,569,991
    • Issue date Oct 29, 1996
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,521,475
    • Issue date May 28, 1996
    • Koyo Seiko Co., Ltd.
    • Jian-Guo Fu
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,485,067
    • Issue date Jan 16, 1996
    • Koyo Seiko Co., Ltd.
    • Mitsuhiko Nishimoto
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,480,000
    • Issue date Jan 2, 1996
    • Koyo Seiko Co., Ltd.
    • Toshihiko Daido
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,360,077
    • Issue date Nov 1, 1994
    • Koyo Seiko Co., Ltd.
    • Mitsuhiko Nishimoto
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,355,315
    • Issue date Oct 11, 1994
    • Koyo Seiko Co., Ltd.
    • Toshihiko Daido
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Power steering apparatus
    • Patent number 5,339,243
    • Issue date Aug 16, 1994
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus having overload protection
    • Patent number 5,303,156
    • Issue date Apr 12, 1994
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Electric power steering apparatus
    • Patent number 5,271,474
    • Issue date Dec 21, 1993
    • Koyo SeikoCo., Ltd.
    • Mitsuhiko Nishimoto
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Four-wheel steering apparatus
    • Patent number 5,207,287
    • Issue date May 4, 1993
    • Koyo Seiko Co., Ltd.
    • Osamu Sano
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Motor-driven power steering apparatus
    • Patent number 5,097,918
    • Issue date Mar 24, 1992
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshihiko Daido
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Power steering apparatus and rotary detector used therefor
    • Patent number 5,076,381
    • Issue date Dec 31, 1991
    • Mitsubishi Denki Kabushiki Kaisha
    • Toshihiko Daido
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Motor-driven power steering apparatus
    • Patent number 5,040,629
    • Issue date Aug 20, 1991
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Motor-driven power steering control apparatus
    • Patent number 4,977,507
    • Issue date Dec 11, 1990
    • Koyo Seiko Co., Ltd.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Steering angle middle point detecting apparatus
    • Patent number 4,961,474
    • Issue date Oct 9, 1990
    • Koyo Seiko Co., Ltd.
    • Toshihiko Daido
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

  • Information Patent Application

    Electric power steering apparatus
    • Publication number 20010027364
    • Publication date Oct 4, 2001
    • KOYO SEIKO CO. LTD.
    • Hirofumi Matsuoka
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS