Patents by Inventor Keiichiro Senda

Keiichiro Senda 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).

  • Flow rate control valve and flow rate control system
    Patent number: 6230738
    Abstract: A flow rate control valve comprises a driver in which a rotary shaft is rotated to adjust the opening degree of a valve body. The driver is an ultrasonic motor comprising a stator having piezoelectric elements mounted thereto and a rotor mounted to the rotary shaft and resiliently pressed against the stator.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 15, 2001
    Assignee: Tokyo Keiso Co., Ltd.
    Inventors: Yasushi Watanabe, Keiichiro Senda, Hiroshi Fujita, Naoya Hayamizu, Hideaki Hirabayashi