creator Ivanov, George K. creator Arastoopour, Hamid creator Bilgili, Ecevit creator Shahidi, Nima creator Bernstein, Barry An apparatus and process for pulverization of polymeric material having a multi-component screw disposed within an elongated cylindrical housing. The multi-component screw has an independently rotatable extrusion portion and an independently rotatable pulverization portion. A cooling means is provided to maintain the fine powder material produced during the pulverization process at a desired temperature. In one embodiment of this invention, a second multi-component screw having an independently rotatable extrusion portion and an independently rotatable pulverization portion is disposed within the elongated cylindrical housing. Submitted by Aric Ahrens (ahrens@iit.edu) on 2012-01-12T19:26:32Z No. of bitstreams: 1 6513737.pdf: 190030 bytes, checksum: 0d906448ad9c54b8bb92dff00b0730e4 (MD5) Made available in DSpace on 2012-01-12T19:26:32Z (GMT). No. of bitstreams: 1 6513737.pdf: 190030 bytes, checksum: 0d906448ad9c54b8bb92dff00b0730e4 (MD5) Previous issue date: 2003-02-04 Illinois Institute of Technology 2009-05-14 2003-02-04 6,513,737 http://hdl.handle.net/10560/2441 en United States Patent Patent reformatted digital application/pdf No Copyright - United States http://rightsstatements.org/page/NoC-US/1.0/ Open Access