Patents by Inventor Hiromu Shioyama

Hiromu Shioyama 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: 4097119
    Abstract: An optical fiber cable of a structure comprising optical fibers, cushion layers supporting the fibers by way of low friction layers and a strengthening member provided lengthwise along the cable, wherein concentrated tension and compression applied to the optical fibers due to the external bending force can be dispersed through the cushion and low friction layers and the tension applied to the entire cable can be received by the strengthening member.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: June 27, 1978
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hiroyuki Kumamaru, Hiromu Shioyama, Masao Hoshikawa