Patents by Inventor Ikurou Masuda

Ikurou Masuda 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).

  • Voltage measuring apparatus for sheathed power cable
    Patent number: 6768315
    Abstract: The measuring precision of an electric power measuring apparatus is improved. A voltage measuring apparatus for sheathed power cable is disclosed as including; a first conductive member arranged to contact the sheathing material for sheathing a power cable conductor, a second conductive member for forming a capacitance between the ground and itself, current voltage converting operation for converting a current signal flowing between the first conductive member and the second conductive member into a voltage signal having a waveform proportional to the current signal, and a voltage value calculating operation for calculating the voltage value applied to the power cable from the signal converted by the current voltage converting operation.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: July 27, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Watanabe, Kazuo Kato, Masayuki Tani, Ikurou Masuda
  • Voltage measuring apparatus for sheathed power cable
    Publication number: 20020171433
    Abstract: The measuring precision of an electric power measuring apparatus is improved. A voltage measuring apparatus for sheathed power cable comprises; a first conductive member arranged to contact the sheathing material for sheathing a power cable conductor, a second conductive member for forming a capacitance between the ground and itself, a current voltage converting means for conversion into the voltage signal having a waveform proportional to the current signal flowing between the first conductive member and the second conductive member, and a voltage value calculating means for calculating the voltage value applied to the power cable from the voltage signal converted by the current voltage converting means.
    Type: Application
    Filed: October 30, 2001
    Publication date: November 21, 2002
    Inventors: Masahiro Watanabe, Kazuo Kato, Masayuki Tani, Ikurou Masuda