Patents by Inventor Junjii Kumada

Junjii Kumada 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).

  • Leaky coaxial cable
    Patent number: 8378764
    Abstract: Provided is a leaky coaxial cable in which a plurality of slots 1 for forming a leak electromagnetic field are arranged in a string shape in an outer conductor of the coaxial cable. The pitch interval of the slots 1 is periodically changed in the axial direction. The periodical change of the pitch interval of a slot portion changes according to a sinusoidal function, a quadratic function, or other functions.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: February 19, 2013
    Assignees: Fujikura Ltd., NHK Integrated Technology Inc.
    Inventors: Fumio Suzuki, Kazuhiko Takano, Nobunao Ishii, Junjii Kumada, Yasuki Ozaki, Yoshihiko Nasu, Kazuhisa Satou