Patents by Inventor Teruaki Iijima

Teruaki Iijima 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).

  • Interface apparatus for communication terminal equipment units
    Patent number: 4953199
    Abstract: An interface apparatus connects one of a plurality of communication terminal equipment units to a single telephone line on the basis of a selection signal supplied via the telephone line. The telephone line is disconnected when there is no answer from the selected communication terminal equipment unit within a predetermined time period.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: August 28, 1990
    Assignees: Fuji Electric Co., Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Hoshi, Yoichi Sakai, Masaaki Tanabe, Tatsuo Inoue, Takeshi Kamakura, Teruaki Iijima, Hiroshi Nishinaga, Tetsuro Yamashita