Patents by Inventor Kotaro Tanimura

Kotaro Tanimura 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).

  • Switching circuit and envelope signal amplifier
    Patent number: 8917142
    Abstract: A switching circuit 33 comprises a connection circuit cascade-connecting control terminals for controlling switching of n number of transistors M1-Mn via n?1 number of coils L1 respectively (n is an integer equal to or more than 2; and coils L3 respectively connected between one end of each of the transistors M1-Mn and other end of a coil L2, one end of the coil L2 being electrically connected to a DC power source. The transistors M1-Mn is sequentially switched with PWM signals inputted to an input terminal of the connection circuit. The switching circuit 33 further comprises a transistor M0 inserted at the one end or the other end of the coil L2 in cascade-connection.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: December 23, 2014
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Satoshi Hatsukawa, Kazuhiro Fujikawa, Takashi Tsuno, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren, Kotaro Tanimura