TREA

Tetsuo Sakai

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  • Tokyo, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Image display device
    • Patent number 4,024,529
    • Issue date May 17, 1977
    • Nippon Hoso Kyokai
    • Tetsuo Sakai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Gaseous discharge luminous device
    • Patent number 4,000,436
    • Issue date Dec 28, 1976
    • Dai Nippon Toryo Co., Ltd.
    • Takao Toryu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Matrix type gas discharge display device
    • Patent number 3,952,230
    • Issue date Apr 20, 1976
    • Nippon Hoso Kyokai
    • Tetsuo Sakai
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS