Patents by Inventor William Collom

William Collom 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).

  • Process and apparatus for rapid pre-expension and molding of expandable polymer particles
    Patent number: 5271886
    Abstract: A process and apparatus for rapidly expanding and molding carbon dioxide-impregnated polymer particles is disclosed. The process involves expanding the impregnated particles in a moving stream of pressurized saturated steam or super-heated steam, directing the resulting stream of pre-expanded particles into a mold, and molding the particles into a foamed object. Apparatus suitable for use with the process is also disclosed.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: December 21, 1993
    Assignee: Arco Chemical Technology, L.P.
    Inventors: William Collom, Dennis Fuller, Joseph Kinslow, Bernard H. Meyer, Richard H. Immel