TREA

Hiroshi Urata

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  • Kosai, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Piezoelectric audible sound generator
    • Patent number 4,393,373
    • Issue date Jul 12, 1983
    • Fuji Electrochemical Co., Ltd.
    • Michihiro Torii
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
  • Information Patent Grant

    H-Type ceramic resonator
    • Patent number 4,368,402
    • Issue date Jan 11, 1983
    • Fuji Electrochemical Co., Ltd.
    • Michihiro Torii
    • H03 - BASIC ELECTRONIC CIRCUITRY