Patents by Inventor Kunio Masuno

Kunio Masuno 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).

  • Eccentric core optical waveguide
    Patent number: 3950073
    Abstract: An eccentric core optical waveguide comprising at least one glass core having relatively large refraction index disposed in an outer cylindrical glass jacket having larger diameter than that of the glass core and relatively small refraction index. The one or more glass core being so arranged as to made tangential contact with the inner wall of the glass jacket or a dielectric thin film coated inside the jacket at a small area. The space between the glass core and the outer glass jacket or said thin film is filled by air.
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: April 13, 1976
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Masaharu Horiguchi, Takao Edahiro, Kunio Masuno, Tadashi Miyashita, Shiro Takahashi