Patents by Inventor Yuji Takigawa

Yuji Takigawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cross-connection apparatus for B-ISDN
    Patent number: 5265088
    Abstract: A cross-connection apparatus for B-ISDN includes plural interface units, multiplexers, virtual path identifier (VPI) conversion tables, demultiplexers, and loop-back units and a switch unit.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: November 23, 1993
    Assignees: Fujitsu Limited, Nippon Telegraph and Telephone Corporation
    Inventors: Yuji Takigawa, Masaaki Kawai, Hidetoshi Naito, Hisako Watanabe, Kazuyuki Tajima, Haruo Yamashita