Patents by Inventor Takasi Yosida

Takasi Yosida 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).

  • Antenna unit, communication system and digital television receiver
    Patent number: 6639555
    Abstract: An antenna device comprising a conductive earth substrate, a receiving element located in the proximity of said conductive earth substrate and having a receiving terminal, and a transmitting element located in the proximity of said receiving element and having a transmitting terminal, characterized in that an end of said receiving element and an end of said transmitting element are connected to said conductive earth substrate for grounding through a common portion and the frequency band of said receiving element is different from that of said transmitting element.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: October 28, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Joji Kane, Takasi Yosida, Noboru Nomura, Michio Sasaki, Akinori Yanase, Satoshi Yamada
  • Antenna unit and digital television receiver
    Patent number: 6362784
    Abstract: The present invention provides an antenna device comprising a conductive substrate and an antenna element located in the proximity of the conductive substrate, in which a portion of the antenna element is formed of a coil or zigzag conductor and an end of the antenna element is connected to the conductive substrate for grounding. In addition, the coil or zigzag conductor is formed at an end of the antenna element and the coil or zigzag conductor and the other end of the antenna element are connected together on an insulator provided on the conductive substrate.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: March 26, 2002
    Assignee: Matsuda Electric Industrial Co., Ltd.
    Inventors: Joji Kane, Takasi Yosida, Noboru Nomura, Toyokazu Ikeda, Tosiro Sugiyama, Hideto Majima
  • Mobile unit support system
    Patent number: 6016109
    Abstract: A mobile unit support system comprises at least one magnetic member for forming a magnetic field in said vicinity of a movement path of a mobile unit which is made of a dielectromagnetic material; and at least one magnetic sensor which, when said mobile unit passes over, detects a change of said magnetic field and which transmits a result of said detection to an external, and said mobile unit comprises receiving means for receiving said transmitted signal, and a processing section which processes a signal from said receiving means.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: January 18, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takasi Yosida, Joji Kane, Noboru Nomura