TREA

Hirohiko Yamamoto

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Patents Grantslast 30 patents

  • Information Patent Grant

    Back fire helical antenna
    • Patent number 5,346,300
    • Issue date Sep 13, 1994
    • Sharp Kabushiki Kaisha
    • Hirohiko Yamamoto
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Microwave date transmission apparatus
    • Patent number 5,021,790
    • Issue date Jun 4, 1991
    • Sharp Kabushiki Kaisha
    • Tomozo Ohta
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Microwave data transmission apparatus
    • Patent number 4,926,182
    • Issue date May 15, 1990
    • Sharp Kabushiki Kaisha
    • Tomozo Ohta
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Antenna system
    • Patent number 4,712,111
    • Issue date Dec 8, 1987
    • Sharp Kabushiki Kaisha
    • Tomozo Ohta
    • H01 - BASIC ELECTRIC ELEMENTS