Patents by Inventor Robert Schroots

Robert Schroots 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).

  • Purging compound
    Patent number: 6022420
    Abstract: An extruder is purged of residual thermoplastic resin by passing purging compound through the extruder, the purging compound being particles of fluoropolymer which are non-melt flowing at the temperature of operation of the extruder.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: February 8, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Johann Eberle, Robert Schroots