Patents by Inventor Richard S. Coggins

Richard S. Coggins 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 of agglomerating and dewatering polymeric materials
    Patent number: 4776269
    Abstract: A method for agglomerating and dewatering elastomeric material having a relatively high water content wherein the elastomeric material is fed to a pair of counterrotating pressing rolls with a tight nip opening. The elastomeric material is drawn through the nip opening and compacted and dewatered therein. The method of the present invention produces at least a doubling of the particle size of the feed material and a reduction in the water content of the feed material in the range of 30 to 80%.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: October 11, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard S. Coggins, Richard C. Yeh, James P. Norton