Patents by Inventor Sakuo Fukumoto

Sakuo Fukumoto 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).

  • Power supply circuit for driving a motor
    Patent number: 4570211
    Abstract: A power supply circuit for driving a motor includes a rectifier circuit and a converter circuit for stepping down the DC voltage from the rectifier circuit to drive a motor. The power supply circuit further includes a regulator circuit which is energized by the DC output voltage from the converter circuit to supply a constant voltage or current to the motor.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: February 11, 1986
    Assignee: Tokyo Electric Co. Ltd.
    Inventors: Yasutake Manda, Tadao Miyabayashi, Sakuo Fukumoto