Patents by Inventor Edgar W. Lefler, IV

Edgar W. Lefler, IV 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).

  • Water-dispersible copolyester-ether compositions
    Patent number: 5571620
    Abstract: This invention relates to linear, water-dispersible sulfopolyesters that incorporate higher order polyalkylene glycol units. The sulfopolyesters provide improved abrasion and blocking resistances in polyester fiber sizing applications.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: November 5, 1996
    Assignee: Eastman Chemical Company
    Inventors: Scott E. George, Edgar W. Lefler, IV, James M. Spain, Jr.