Patents by Inventor Masanari Hiramatsu

Masanari Hiramatsu 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).

  • Noise eliminating apparatus of high-frequency transmission system
    Patent number: 6404179
    Abstract: A primary winding of a first insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an input terminal, and windings of a noise eliminating transformer are provided within balanced lines on the side of a secondary winding of the first insulating transformer. A primary winding of a second insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an output terminal, and balanced lines on the side of the secondary winding of the second insulating transformer is connected to the noise eliminating transformer. One end of each of the primary windings, which is grounded to the ground line, is connected to the middle print of the secondary winding of each insulating transformer.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: June 11, 2002
    Assignee: Masprodenkoh Kabushikikaisha
    Inventors: Toshihiro Sugiura, Masanari Hiramatsu, Hiroshi Matsubara
  • Noise eliminating apparatus of high-frequency transmission system
    Publication number: 20020044402
    Abstract: A primary winding of a first insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an input terminal, and windings of a noise eliminating transformer are provided within balanced lines on the side of a secondary winding of the first insulating transformer. A primary winding of a second insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an output terminal, and balanced lines on the side of the secondary winding of the second insulating transformer is connected to the noise eliminating transformer One end of each of the primary windings, which is grounded to the ground line, is connected to the middle point of the secondary winding of each insulating transformer.
    Type: Application
    Filed: December 17, 2001
    Publication date: April 18, 2002
    Inventors: Toshihiro Sugiura, Masanari Hiramatsu, Hiroshi Matsubara
  • Noise eliminating apparatus of high-frequency transmission system
    Patent number: 6373674
    Abstract: A primary winding of a first insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an input terminal, and windings of a noise eliminating transformer are provided within balanced lines on the side of a secondary winding of the first insulating transformer. A primary winding of a second insulating transformer for balance-to-unbalance transformation is connected between the central electrode and the outer electrode of an output terminal, and balanced lines on the side of the secondary winding of the second insulating transformer is connected to the noise eliminating transformer. One end of each of the primary windings, which is grounded to the ground line, is connected to the middle point of the secondary winding of each insulating transformer.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: April 16, 2002
    Assignee: Masprodenkoh Kabushikikaisha
    Inventors: Toshihiro Sugiura, Masanari Hiramatsu, Hiroshi Matsubara