Patents by Inventor Katsumi Chigira

Katsumi Chigira 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).

  • Planar antenna
    Patent number: 7518567
    Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: April 14, 2009
    Assignee: Yokowo Co., Ltd.
    Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki
  • Planar antenna
    Publication number: 20070171132
    Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 26, 2007
    Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki