TREA

Sadaaki Sakurai

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electro-acoustic transducer
    • Patent number 4,281,223
    • Issue date Jul 28, 1981
    • Sony Corporation
    • Masana Ugaji
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Diaphragm for a loudspeaker
    • Patent number 4,275,278
    • Issue date Jun 23, 1981
    • Sony Corporation
    • Sadaaki Sakurai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker system with heat pipe
    • Patent number 4,210,778
    • Issue date Jul 1, 1980
    • Sony Corporation
    • Sadaaki Sakurai
    • F28 - HEAT EXCHANGE IN GENERAL