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Masaaki Matsumoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Link plate for silent chains and method of producing the same
    • Patent number 6,450,910
    • Issue date Sep 17, 2002
    • Tsubakimoto Chain Co.
    • Masaaki Matsumoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Plate for a silent chain
    • Patent number 6,045,473
    • Issue date Apr 4, 2000
    • Tsubakimoto Chain Co.
    • Masaaki Matsumoto
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Silent chain
    • Patent number 5,989,141
    • Issue date Nov 23, 1999
    • Tsubakimoto Chain Co.
    • Nobuto Kozakura
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing structure with improved lubricating seals for supporting sh...
    • Patent number 4,948,271
    • Issue date Aug 14, 1990
    • Koyo Seiko Co., Ltd.
    • Masao Nunotani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing with improved lubrication seals
    • Patent number 4,919,551
    • Issue date Apr 24, 1990
    • Koyo Seiko Co., Ltd.
    • Masao Nunotani
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bearing system for a wheel
    • Patent number 4,883,371
    • Issue date Nov 28, 1989
    • Koyo Seiko Co., Ltd.
    • Masaaki Matsumoto
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Frictional transmission chain
    • Patent number 4,718,881
    • Issue date Jan 12, 1988
    • Tsubakimoto Chain Co.
    • Yoshiaki Sugimoto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...