Patents by Inventor Yokoyama: Yukio

Yokoyama: Yukio 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 apparatus unnecessitating shielding case
    Patent number: 5392461
    Abstract: A portable radio communication apparatus includes a printed circuit board, an antenna section and a radio section installed on the board, a housing, and a connector. The radio section includes electronic parts of which connecting terminals are connected to the printed circuit board and of which conductor sections formed on outer surface thereof are connected to the grounding section. The housing accommodates therein the printed circuit board, the antenna section, and the radio section. The housing has a conductor film formed on an inner surface thereof. The conductor sections of the electronic parts are connected to the conductor film on the inner surface of the housing via the connector. Since the shielding case and the connector conventionally used are unnecessary, the size and weight of the apparatus can be reduced.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: February 21, 1995
    Assignee: NEC Corporation
    Inventor: Yokoyama: Yukio