Patents by Inventor James N. Weguespack

James N. Weguespack 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).

  • Method for reducing volatiles in polymerized styrene
    Patent number: 5540813
    Abstract: Methods and apparatus are disclosed for purifying polymerized monovinyl aromatic compounds such as polystyrene by reducing the residual monomer content of the finished polymer, said methods and apparatus including a combination of heat exchangers and devolatilizers used in conjunction with a monovinyl aromatic polymerization reactor system.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: July 30, 1996
    Assignee: Fina Technology, Inc.
    Inventors: Jose M. Sosa, Robert M. Scates, James N. Weguespack, Bruce P. Blackmar, Scott W. Davis