Patents by Inventor Masutaka Koyano

Masutaka Koyano 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).

  • End-surface closely arranged multicore optical fiber and manufacturing method thereof
    Patent number: 7509010
    Abstract: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: March 24, 2009
    Assignees: National Institute of Advanced Industrial Science and Technology, Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Masutaka Koyano, Kunio Ikuma
  • End-surface closely arranged multicore optical fiber and manufacturing method thereof
    Publication number: 20080069504
    Abstract: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 20, 2008
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD
    Inventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Masutaka Koyano, Kunio Ikuma