Patents Assigned to Nagase Filter Co, Ltd.
  • Filter cleaning method and filter cleaning apparatus
    Patent number: 11219930
    Abstract: The present invention provides a new filter cleaning method that has cleaning performance superior to that of ultrasonic cleaning. The method for cleaning a filter of the present invention includes the steps of: generating a shock wave; and bringing the shock wave into contact with a filter to which a filler adhered, wherein in the shock wave contacting step, a pressure applied to the filter by the shock wave is 0.07 MPa or more.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: January 11, 2022
    Assignees: Nagase Filter Co, Ltd., National University Corporation Kumamoto University
    Inventors: Toshiki Eguchi, Masayoshi Shimo, Hideki Hayashi, Kazuyuki Hokamoto, Shigeru Tanaka