Patents by Inventor Hisao Takata

Hisao Takata 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).

  • Method for coating optical fibers with thermoplastic resin
    Patent number: 4351657
    Abstract: In a process for preparing optical fibers, an optical fiber preform is heated and softened to be drawn at a high speed into an optical fiber. The optical fiber is passed through a plastic pipe of a thermoplastic resin. As the optical fiber is passed through the plastic pipe, the lower part of the plastic pipe is gradually inserted into a heating unit to be uniformly heated. The heated plastic pipe is softened and is coated over the optical fiber.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: September 28, 1982
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Takao Kimura, Shigeki Sakaguchi, Hisao Takata