Patents by Inventor Tetsushi Matsushita

Tetsushi Matsushita 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).

  • Electric power converting apparatus
    Patent number: 4282568
    Abstract: In an electric power converting apparatus comprising a plurality of branches each including a plurality of serially connected semiconductor switching elements, a non-linear resistor is connected in parallel with each semiconductor switching element, and a voltage division element including serially connected capacitor and a resistor is connected in parallel with each semiconductor switching element. A reactor is connected in series with each one of the branches and an arrestor is connected in parallel with a serially connected reactor and an associated branch.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: August 4, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Sumio Kobayashi, Tetsushi Matsushita