Patents by Inventor Warren Kent Hopkins

Warren Kent Hopkins 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).

  • Aqueous enteric coating compositions
    Patent number: 5851579
    Abstract: The present invention sets forth an enteric coating composition comprising a blend ofa) an alkali-soluble acrylic latex polymer andb) an aqueous solution of ammonium or alkaline salts of cellulose polymers.The invention also sets forth a method for preparing an enterically-coated dosage form and a method for preparing the present compositions.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: December 22, 1998
    Assignee: Eastman Chemical Company
    Inventors: Stephen Hong-Wei Wu, Warren Kent Hopkins
  • Oxidized cellulose and vitamin E blend for topical hemostatic applications
    Patent number: 5696101
    Abstract: The present invention relates to a hemostatic composition comprising 1 to 90 weight percent of vitamin E or a derivative of vitamin E, 1 to 95 weight percent of oxidized cellulose, and 0.1 to 75 weight percent of water. The hemostatic composition may be formed into pellets, powder, paste, gum, gel, or liquid suitable for molding to conform to the contours of a wound.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Chemical Company
    Inventors: Stephen Hong-Wei Wu, Warren Kent Hopkins