Patents by Inventor Yoshiyuki Suetugu

Yoshiyuki Suetugu 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).

  • Optical fiber cable
    Patent number: 5630002
    Abstract: One or a plurality of reverse-lay grooves the direction of which is inverted periodically are cut in the outer circumference of a spacer, and an optical fiber tape unit or a stack of optical fiber tape units is accommodated in this groove. The length of the diagonal lines of the optical fiber tape unit or a stack of optical fiber tape units is larger than the width and depth of a bottom portion of the groove. In the inverted portion of the groove, the normal vector of the optical fiber tape unit or the stack of optical fiber tape units points to a direction perpendicular to an opening direction of the groove in the inverted portions of the groove.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: May 13, 1997
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Junichi Ota, Kazuhiro Hamada, Yoshiyuki Suetugu, Hiroaki Sano, Hiroki Ishikawa