Patents by Inventor Jack L. Ritchie

Jack L. Ritchie 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).

  • Granulator
    Patent number: 6749138
    Abstract: A granulator for reducing the size of plastic particles to facilitate the removal of contaminants therefrom. The granulator includes an upper chamber and a lower chamber defined by an exit screen. The upper chamber includes a rotary shear and an air handling system for creating a pressure drop across the screen to facilitate the transit of particulate material therethrough.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: June 15, 2004
    Assignee: Phoenix Technologies, L.P.
    Inventors: Thomas S. Hart, Jack L. Ritchie
  • Granulator
    Publication number: 20030168537
    Abstract: A granulator for reducing the size of plastic particles to facilitate the removal of contaminants therefrom. The granulator includes an upper chamber and a lower chamber defined by an exit screen. The upper chamber includes a rotary shear and an air handling system for creating a pressure drop across the screen to facilitate the transit of particulate material therethrough.
    Type: Application
    Filed: March 5, 2002
    Publication date: September 11, 2003
    Inventors: Thomas S. Hart, Jack L. Ritchie