Patents by Inventor Yukinari Tsutsumi

Yukinari Tsutsumi 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 calibrating discharge heat energy of optical fiber splicing device
    Patent number: 6294760
    Abstract: The object of the present invention is to provide a method of accurately calibrating discharge heat energy produced during fusion splicing of two optical fibers by heating the optical fibers arranged with the intentional fiber cladding axes offset; in order to achieve the object, the present invention provides a method of calibrating discharge heat energy used in the optical fiber fusion splicing device wherein a discharge heating energy is measured based on a change of the fiber cladding axes offset.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 25, 2001
    Assignee: Fujikura Ltd.
    Inventors: Koichi Inoue, Katsumi Sasaki, Yosuke Suzuki, Noriyuki Kawanishi, Yukinari Tsutsumi