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Ryoji Nakahama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual propeller system for marine drive
    • Patent number 5,759,073
    • Issue date Jun 2, 1998
    • Sanshin Kogyo Kabushiki Kaisha
    • Yoshitsugu Sumino
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Automatic position controller for marine propulsions
    • Patent number 5,352,137
    • Issue date Oct 4, 1994
    • Sanshin Kogyo Kabushiki Kaisha
    • Tomio Iwai
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Marine propulsion unit control system
    • Patent number 5,207,170
    • Issue date May 4, 1993
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Thrust flange lubricating structure of marine propulsion unit
    • Patent number 5,184,967
    • Issue date Feb 9, 1993
    • Sanshin Kogyo Kabushiki Kaisha
    • Akihiro Onoue
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tilting device for outboard engine
    • Patent number 4,931,027
    • Issue date Jun 5, 1990
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Device driving injection pump for fuel-injection engine
    • Patent number 4,909,226
    • Issue date Mar 20, 1990
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Power transmission device for inboard/outboard system
    • Patent number 4,850,911
    • Issue date Jul 25, 1989
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Device driving injection pump for fuel-injection engine
    • Patent number 4,811,717
    • Issue date Mar 14, 1989
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Two-cycle fuel-injection engine
    • Patent number 4,795,001
    • Issue date Jan 3, 1989
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Tilt lock mechanism for marine propulsion device
    • Patent number 4,784,625
    • Issue date Nov 15, 1988
    • Sanshin Kobyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Supporting device for marine propulsion apparatus
    • Patent number 4,781,631
    • Issue date Nov 1, 1988
    • Sanshin Kogyo Kabushiki Kaisha
    • Tatsuki Uchida
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Shifting device for inboard-outboard drive
    • Patent number 4,767,365
    • Issue date Aug 30, 1988
    • Shanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    System for stable running of marine propulsions
    • Patent number 4,734,065
    • Issue date Mar 29, 1988
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Outboard motor
    • Patent number 4,726,799
    • Issue date Feb 23, 1988
    • Sanshin Kogyo Kabushiki Kaisha
    • Norimichi Harada
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Tilt device for boat propulsion machine
    • Patent number 4,682,961
    • Issue date Jul 28, 1987
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Mounting arrangement for outboard drive
    • Patent number 4,673,358
    • Issue date Jun 16, 1987
    • Sanshin Kogyo Kabushiki Kaisha
    • Tomio Iwai
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Hydraulic tilt device for marine propulsion unit
    • Patent number 4,631,035
    • Issue date Dec 23, 1986
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Outboard motor
    • Patent number 4,615,683
    • Issue date Oct 7, 1986
    • Sanshin Kogyo Kabushiki Kaisha
    • Norimichi Harada
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Tilt lock mechanism for marine propulsion device
    • Patent number 4,575,342
    • Issue date Mar 11, 1986
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Detent mechanism for clutches
    • Patent number 4,570,776
    • Issue date Feb 18, 1986
    • Sanshin Kogyo Kabushiki Kaisha
    • Takashi Iwashita
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Outboard motor
    • Patent number 4,559,018
    • Issue date Dec 17, 1985
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tilt mechanism for marine propulsion device
    • Patent number 4,557,696
    • Issue date Dec 10, 1985
    • Sanshin Kogyo Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tilt lock mechanism for marine propulsion device
    • Patent number 4,551,104
    • Issue date Nov 5, 1985
    • Sanshin Kogyo Kabushiki Kaisha
    • Takashi Iwashita
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tilt locking system for boat propellers
    • Patent number 4,545,769
    • Issue date Oct 8, 1985
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Shifting apparatus for a propelling unit for a vessel
    • Patent number 4,527,441
    • Issue date Jul 9, 1985
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Tilt locking system for ship propellers
    • Patent number 4,521,202
    • Issue date Jun 4, 1985
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Exhaust silencer structure for outboard engines
    • Patent number 4,421,490
    • Issue date Dec 20, 1983
    • Yamaha Motor Co., Ltd.
    • Ryoji Nakahama
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT