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Yoshiaki Wada

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  • Niigata, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Seal assembly for stirling engine
    • Patent number 5,199,722
    • Issue date Apr 6, 1993
    • Kabushiki Kaisha Riken
    • Yoshiaki Wada
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Oil seal assembly
    • Patent number 4,984,812
    • Issue date Jan 15, 1991
    • Kabushiki Kaisha Riken
    • Yoshiaki Wada
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Oil ring structure having reduced rigidity
    • Patent number 4,722,535
    • Issue date Feb 2, 1988
    • Toyota Jidosha Kabushiki Kaisha
    • Yorishige Maeda
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Corrugated expander for piston ring assembly
    • Patent number 4,542,907
    • Issue date Sep 24, 1985
    • Kabushiki Kaisha Riken
    • Ko Chiba
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...