Patents by Inventor Takatoshi Akagi

Takatoshi Akagi 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 module including a flexible substrate
    Patent number: 5438305
    Abstract: A high frequency module is disclosed which comprises a high frequency device in a package, a circuit formed on a flexible substrate in the package, the circuit, the high frequency device and input/output terminals of the package being connected electrically.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: August 1, 1995
    Assignees: Hitachi, Ltd., Hitachi Denshi Kabushiki Kaisha, Hitachi Video & Information System, Inc.
    Inventors: Mitsutaka Hikita, Atsushi Sumioka, Takatoshi Akagi, Toyoji Tabuchi, Nobuhiko Shibagaki
  • 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