Patents by Inventor Yukinori Ishida

Yukinori Ishida 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: 4966434
    Abstract: An optical fiber cable comprising a core which comprises at least two filaments stranded, at least one optical fiber stranded around the core and a jacket around the optical fiber, wherein the strand pitch of the filaments of the core is greater than that of the optical fiber, in which the optical fiber contained is free from elongation strain when the cable is stretched.
    Type: Grant
    Filed: August 21, 1984
    Date of Patent: October 30, 1990
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Public Corporation
    Inventors: Shinichi Yonechi, Yukinori Ishida, Masaaki Kawase
  • Optical fiber cable and process for production thereof
    Patent number: 4491386
    Abstract: An optical fiber cable is described comprising a linear center member having at least one longitudinal and spiral groove in the surface thereof, one coated optical fiber received in each groove, an outer sheath that encloses the center member, and a jelly-like material with which the space around each optical fiber is entirely filled. A process for producing such an optical fiber cable is also described.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: January 1, 1985
    Assignees: Nippon Telegraph & Telephone Public Corporation, Sumitomo Electric Industries, Ltd.
    Inventors: Yukiyasu Negishi, Yukinori Ishida, Yasunori Saito, Shigeru Tanaka
  • Optical fiber for communication
    Patent number: 4114981
    Abstract: An optical fiber for communication comprises an optical fiber covered with a coating of a high-molecular elastomer having a flexural modulus of not less than 200 kg/cm.sup.2 at room temperature, the difference between the flexural moduli of said elastomer at room temperature and about -50.degree. C being not more than 1000 kg/cm.sup.2.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: September 19, 1978
    Assignees: Nippon Telegraph and Telephone Public Corporation, The Fujikura Cable Works, Ltd.
    Inventors: Yukinori Ishida, Moriaki Kojima, Toshiaki Kobayashi, Yasuyuki Sugawara