Patents by Inventor Syuichi Obayashi

Syuichi Obayashi 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).

  • Portable radio communication device with wide bandwidth and improved antenna radiation efficiency
    Patent number: 5936583
    Abstract: A portable radio communication device capable of eliminating the deterioration of the radiation efficiency due to the occurrence of the dual resonance on the antenna, without reducing the bandwidth. A radio communication device, comprises: a device body made of a conductor body, containing at least one of a radio transmitter and a radio receiver; and an antenna, mounted on the device body, formed by first and second strip-like conductor elements which are connected together at a feeding point connected with said at least one of the radio transmitter and the radio receiver, the first and second strip-like conductor elements having an identical electrical length with each other.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: August 10, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Syuichi Sekine, Minoru Sakurai, Tadahiko Maeda, Yasuo Suzuki, Syuichi Obayashi