Patents by Inventor Keijiro Nakahara

Keijiro Nakahara 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).

  • Pump unit and endoscope apparatus using the same
    Patent number: 9445710
    Abstract: A pump unit which can be made to be small-sized, and which enables to achieve a sufficient flow and an endoscope apparatus using such pump are provided. The pump unit which transports a fluid in a channel upon generating a progressive wave which is propagated in a longitudinal direction of the channel, in a first flexible thin film which constitutes at least a part of a channel-wall surface, includes a vibration exciter unit.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: September 20, 2016
    Assignees: OLYMPUS CORPORATION, KEIO UNIVERSITY
    Inventors: Norihisa Miki, Yoshiyuki Okayama, Keijiro Nakahara, Kaori Yoshimura, Shinji Yasunaga