Patents by Inventor Pieter Hoogendonk

Pieter Hoogendonk 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).

  • Screw and apparatus using same for conveying wet solids
    Patent number: 6283275
    Abstract: The invention provides a combination shafted and shaftless screw, and an apparatus and method for conveying wet solids using the screw.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: September 4, 2001
    Assignee: American Bulk Conveying Syst.
    Inventors: C. Edward Morris, Pieter Hoogendonk