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Yoshiharu Isaka

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  • Iwata-shi, Shizuoka-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tumble valve for multi-valve engine
    • Patent number 5,794,587
    • Issue date Aug 18, 1998
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Tumble valve arrangement for engine
    • Patent number 5,564,383
    • Issue date Oct 15, 1996
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Induction system for engine
    • Patent number 5,549,088
    • Issue date Aug 27, 1996
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Induction system for engine
    • Patent number 5,487,365
    • Issue date Jan 30, 1996
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Tumble control valve for intake port
    • Patent number 5,359,972
    • Issue date Nov 1, 1994
    • Yamaha Hatsudoki Kabushiki Kasha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Induction system for engine
    • Patent number 5,311,848
    • Issue date May 17, 1994
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Intake air control system for the engine
    • Patent number 5,255,649
    • Issue date Oct 26, 1993
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Pump drive for engine
    • Patent number 5,233,952
    • Issue date Aug 10, 1993
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    V belt type automatic transmission system
    • Patent number 5,172,786
    • Issue date Dec 22, 1992
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Tadakazu Ishibashi
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Vertical engine for walk behind lawn mower
    • Patent number 5,070,686
    • Issue date Dec 10, 1991
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Vertical engine for walk-behind lawn mower
    • Patent number 5,000,126
    • Issue date Mar 19, 1991
    • Yamaha Kogyo Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Vertical engine for walk behind lawn mower
    • Patent number 4,790,273
    • Issue date Dec 13, 1988
    • Kiyohiko Oguri
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Lubricating system for vertical shaft engine
    • Patent number 4,766,859
    • Issue date Aug 30, 1988
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Mutsuaki Miyaki
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Vertical engine for walk behind lawn mower
    • Patent number 4,727,834
    • Issue date Mar 1, 1988
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Exhaust system for motorcycles
    • Patent number 4,489,802
    • Issue date Dec 25, 1984
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Motorcycle mounted with V shaped engine
    • Patent number 4,484,650
    • Issue date Nov 27, 1984
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Motorcycle exhaust systems
    • Patent number RE31724
    • Issue date Nov 6, 1984
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • 180 - Motor vehicles
  • Information Patent Grant

    Internal combustion engine with combined transmission case and cran...
    • Patent number 4,339,964
    • Issue date Jul 20, 1982
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Motorcycle exhaust systems
    • Patent number 4,327,811
    • Issue date May 4, 1982
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Yoshiharu Isaka
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES