Patents by Inventor Izumi Nakata

Izumi Nakata 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).

  • Transceiver duplex filter utilizing saw filter
    Patent number: 5515015
    Abstract: A miniaturized portable telephone is provided in which a receiving radio-frequency filter is formed by a SAW filter, while a transmitting radio-frequency filter is formed by a dielectric filter and they are mounted on a substrate. The transmitting and receiving sides are connected to an antenna by transmission lines, the length of which is set to have a high impedance in the mutual transmitting and receiving frequency.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: May 7, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Izumi Nakata