TREA

Fusao Nakagawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Encipher method and decipher method
    • Patent number 5,103,479
    • Issue date Apr 7, 1992
    • Hitachi Ltd.
    • Kazuo Takaragi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Encipher method and decipher method
    • Patent number 4,982,429
    • Issue date Jan 1, 1991
    • Hitachi, Ltd.
    • Kazuo Takaragi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Encrypting system of data
    • Patent number 4,969,190
    • Issue date Nov 6, 1990
    • Hitachi, Ltd.
    • Kazuo Takaragi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE