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Tomoya KAWAI

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  • Kuwana, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydroelectric power generation apparatus
    • Patent number 10,947,950
    • Issue date Mar 16, 2021
    • Tomoya Kawai
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Hydroelectric power generation apparatus and power generation system
    • Patent number 10,677,214
    • Issue date Jun 9, 2020
    • NTN Corporation
    • Yasuyuki Fujita
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Grant

    Hydroelectric power generation apparatus
    • Patent number 10,648,449
    • Issue date May 12, 2020
    • NTN Corporation
    • Tomoya Kawai
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Power transmission device
    • Patent number 10,033,291
    • Issue date Jul 24, 2018
    • NTN Corporation
    • Masatoshi Mizutani
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Blade for a vertical windmill
    • Patent number D821321
    • Issue date Jun 26, 2018
    • NTN Corporation
    • Tomoya Kawai
    • D13 - Equipment for production, distribution, or transformation of energy

Patents Applicationslast 30 patents