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Ritsuko Ohkura

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  • Kawasaki, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    ATM device
    • Patent number 6,295,278
    • Issue date Sep 25, 2001
    • Fujitsu Limited
    • Ritsuko Ohkura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Add-drop multiplexing apparatus
    • Patent number 6,122,249
    • Issue date Sep 19, 2000
    • Fujitsu Limited
    • Hideaki Mochizuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    OAM processing device in an ATM network
    • Patent number 5,974,045
    • Issue date Oct 26, 1999
    • Fujitsu Limited
    • Ritsuko Ohkura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE