TREA

Nagatoshi Usami

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multi-network system
    • Patent number RE33426
    • Issue date Nov 6, 1990
    • Hitachi, Ltd.
    • Norihiko Sugimoto
    • 370 - Multiplex communications
  • Information Patent Grant

    Ring network system for transmission of multicast information
    • Patent number 4,759,015
    • Issue date Jul 19, 1988
    • Hitachi, Ltd. and Hitachi Microcomputer Eng. Ltd.
    • Atsushi Takai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multi-network system
    • Patent number 4,680,756
    • Issue date Jul 14, 1987
    • Hitachi, Ltd.
    • Norihiko Sugimoto
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE