Patents by Inventor Koichiro Aritomi

Koichiro Aritomi 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).

  • Waterproof optical fiber cable
    Patent number: 4703997
    Abstract: An optical fiber cable comprising a water blocking layer, an optical fiber disposed inside the water blocking layer and a water blocking material filling the space between the water blocking layer and the optical fiber, the water blocking material having an apparent viscosity (as measured in accordance with JIS K 2220-1980, 5.15 at 40.degree. C., and a shear rate of 10 sec..sup.-1) of lower than 25,000 poise and also having a worked penetration (as measured in accordance with JIS K 2220-1980, 5.3 at 25.degree. C.) of 150 to 450.
    Type: Grant
    Filed: February 5, 1985
    Date of Patent: November 3, 1987
    Assignee: Dainichi-Nippon Cables, Ltd.
    Inventors: Yasuo Ijiri, Eiji Iri, Toshitaro Oguchi, Koichiro Aritomi