Patents Examined by Marissa Chaet
  • Patent number: 7226553
    Abstract: Underwater melt pelletizer dies which have a highly thermally conductive pathway from their heating source to the vicinity of the polymer exit end of their die holes and have a thermally insulating material at that end of their die holes have improved operability and can pelletize thermoplastics which are otherwise difficult or impossible to pelletize with such an apparatus.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: June 5, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Alan Jackson, Dennis Jack Royer, Marion Glen Waggoner