Patents by Inventor Satoshi Wakamori

Satoshi Wakamori 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).

  • High frequency circuit device
    Patent number: 5422615
    Abstract: In a high frequency circuit device, inductive circuit elements constituting a matching circuit are constructed of so-called helical coils having fine metal wires wound in a hollow solenoid form, which are disposed inside a package in which a high frequency circuit element such as a surface acoustic wave element or the like is mounted. The high frequency circuit device may be utilized in equipment such as wireless communication equipment for reducing the size as well as providing good high frequency characteristics.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: June 6, 1995
    Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.
    Inventors: Nobuhiko Shibagaki, Mitsutaka Hikita, Toyoji Tabuchi, Takatoshi Akagi, Satoshi Wakamori, Tomomi Matsumoto
  • Saw filter chip mounted on a substrate with shielded conductors on opposite surfaces
    Patent number: 5162822
    Abstract: A surface acoustic wave filter device having a surface acoustic wave filter chip disposed on the upper surface of a substrate, input and output conductor patterns provided on each of the upper and lower surfaces of the substrate, and grounding conductor patterns provided on each of the upper and lower surfaces of the substrate so as to surround the input and output conductor patterns on that surface in order to prevent an electromagnetic coupling between the input and output conductor patterns, whereby the out-of-band rejection of at least 40 dB is obtained in an operating band of at least 400 MHz.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: November 10, 1992
    Assignee: Hitachi, Ltd.
    Inventor: Satoshi Wakamori