Patents by Inventor Andrew Robert Witt

Andrew Robert Witt 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 increasing solid state polymerization rate
    Patent number: 6451966
    Abstract: A process for increasing the rate of polymerization of low molecular weight polyester particles under solid state processing conditions whereby the progress of polymerization is preferred over the progress of crystallization for a given mass of particles.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: September 17, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kenneth Wayne Leffew, Andrew Robert Witt