Patents Represented by Law Firm Gofford, Groh, Sheridan, Sprinkle and Dolgorukov
  • Flat element for filtering and separation
    Patent number: 4904378
    Abstract: A flat element for filtering various substances and separating particles wherein a wire is planarly wound in the form of a vortex to form a vortical slit between the adjoining peripheral margins of the wire thereby increasing the area for filtering or separation treatment as so-called linear treatment holes to the utmost to improve the filtering or separation efficiency.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: February 27, 1990
    Assignee: Arai Machinery Corporation
    Inventor: Koichi Arai