Patents by Inventor Eric Affolter

Eric Affolter 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).

  • Mixture for the manufacture of an expanded cellular polymer product and manufacturing process utilizing such a mixture
    Patent number: 6326411
    Abstract: The mixture comprising a polymer, an adsorbtion agent including an expansion agent and a nucleating agent is produced before being placed in an extruder. The result is a finished product of expanded cellular polymer comprising more than 90% by volume of closed cells.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: December 4, 2001
    Assignee: Nextrom Holding SA
    Inventors: Philippe Desarzens, Eric Affolter
  • Device and method for cooling an extrusion cylinder
    Patent number: 5447190
    Abstract: A longitudinal stream of cooling air is caused to flow around the cylinder (10) and over the length of each of one or more heating-and-cooling zones. This longitudinal flow is facilitated by specially designed cooling fins (22; 25). The performance of the extruder is improved in that the temperature over the cross-section of the cylinder is more uniform. Moreover, wear and tear on the extrusion screw and on the cylinder are greatly reduced.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 5, 1995
    Assignee: Nokia-Maillefer SA
    Inventors: Jean-Paul Denisart, Eric Thevoz, Eric Affolter