Patents by Inventor Norihisa Kitajima

Norihisa Kitajima 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).

  • Monolithic LC filter with enhanced magnetic coupling between resonator inductors
    Patent number: 6831530
    Abstract: A monolithic LC filter which provides increased magnetic field coupling as compared with a conventional monolithic LC filter, without an increase in component size of the filter. The monolithic LC filter includes first and second resonator inductors coupled together by magnetic field coupling. The inductors include parallel-extending straight coupling sections formed by conductive lines which extend in parallel generally along a diagonal of a supporting dielectric layer. This configuration enables the lengths of the coupling sections to be increased as compared with the lengths of the corresponding coupling sections of a conventional monolithic LC filter.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: December 14, 2004
    Assignee: NKG Spark Plug Co., Ltd.
    Inventors: Junichi Ichikawa, Tadashi Shingaki, Norihisa Kitajima
  • Monolithic LC filter with enhanced magnetic coupling between resonator inductors
    Publication number: 20030184411
    Abstract: A monolithic LC filter which provides increased magnetic field coupling as compared with a conventional monolithic LC filter, without an increase in component size of the filter. The monolithic LC filter includes first and second resonator inductors coupled together by magnetic field coupling. The inductors include parallel-extending straight coupling sections formed by conductive lines which extend in parallel generally along a diagonal of a supporting dielectric layer. This configuration enables the lengths of the coupling sections to be increased as compared with the lengths of the corresponding coupling sections of a conventional monolithic LC filter.
    Type: Application
    Filed: March 27, 2003
    Publication date: October 2, 2003
    Inventors: Junichi Ichikawa, Tadashi Shingaki, Norihisa Kitajima