Patents by Inventor Yasuhiro Katajima

Yasuhiro Katajima 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).

  • Patent number: 8203493
    Abstract: Provided is a portable communication device, specifically a portable wireless device which is thin while maintaining excellent reception sensitivity even when the device is laid on a metal top panel. As such device (100), a foldable portable cellular phone (100) is provided with a battery box (117) opened on the side of a rear surface (115), and a circuit board (121) having an antenna power feed point (124) is arranged inside a lower case (114). The battery box (117) is covered with a battery cover section (140) removably attached to the lower case (114). The battery cover section (140) is formed of a member having conductivity, and attached to the lower case (114) by having contact point members (151, 152) in between for carrying a current to a reinforcing conductive plate (125) which is to be a GND layer of the circuit board (121).
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: June 19, 2012
    Assignee: Panasonic Corporation
    Inventors: Kenichi Sato, Daigo Imano, Hironori Kikuchi, Yasuhiro Katajima, Tatsuya Sano, Nobuhiro Iwai