TREA

Keizou Kumai

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  • Kyoto, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Head-mounted display device
    • Patent number 6,359,602
    • Issue date Mar 19, 2002
    • Shimadzu Corporation
    • Hisashi Amafuji
    • G02 - OPTICS
  • Information Patent Grant

    Display system
    • Patent number 6,292,158
    • Issue date Sep 18, 2001
    • Shimadzu Corporation
    • Hisashi Amafuji
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Head mounted display
    • Patent number D392629
    • Issue date Mar 24, 1998
    • Shimadzu Corporation
    • Hisashi Amafuji
    • D14 - Recording, communication, or information retrieval equipment