TREA

Yoshikatu Ishida

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  • Ibaraki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Duplex radio communication transceiver
    • Patent number 4,792,939
    • Issue date Dec 20, 1988
    • Hitachi Denshi Kabushiki Kaisha
    • Mitsutaka Hikita
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Surface acoustic wave resonator
    • Patent number 4,734,664
    • Issue date Mar 29, 1988
    • Hitachi, Ltd.
    • Mitsutaka Hikita
    • H03 - BASIC ELECTRONIC CIRCUITRY