Patents Assigned to Howden Equipment Services Pty. Ltd.
  • Counter current diffusion extractor
    Patent number: 4363264
    Abstract: A counter current extractor in which material to be extracted is caused to move in counter current with an extracting liquid by a screw conveyor characterized in that the direction of rotation of the screw conveyor is intermittently reversed. A process for extracting soluble and dispersible materials using such a counter current extractor is also disclosed.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: December 14, 1982
    Assignees: Howden Equipment Services Pty. Ltd., Commonwealth Scientific and Industrial Research Organisation
    Inventors: Timothy R. Lang, Donald J. Casimir