Patents by Inventor Kyoji Maruyama

Kyoji Maruyama 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).

  • Redundant length treatment mechanism for optical fiber at terminal of optical cable
    Patent number: 5268986
    Abstract: A redundant length treatment mechanism for an optical fiber which is stored in an optical cable and has one end connected to an optical connector, includes a storage case in which a redundant part of the optical fiber exposed from the optical cable is stored while wound up in a loop form, a bent form or an S-shape form, the storage case having a draw-out portion through which one end portion of the looped optical fiber is drawn out, and curvature restricting means comprising a pair of stoppers secured to the optical fiber for restricting radius of curvature of the optical fiber stored in a loop form in the storage case.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: December 7, 1993
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Toshiaki Kakii, Hidetoshi Ishida, Tomohiko Ueda, Kyoji Maruyama, Tadashi Haibara, Shigeru Tomita