Patents by Inventor Joyce R. Durham

Joyce R. Durham 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).

  • Tobacco treatment process
    Patent number: 5370139
    Abstract: A process is provided for treating tobacco material for use in a smoking article comprising the step of applying a flavorful and aromatic casing and top dressing composition comprising a weak ammonium salt and a sugar or sugar derivative to a tobacco material. The present also provides a smoking article including tobacco material wherein the tobacco material is in intimate contact with a casing and top casing composition comprising a weak ammonium salt and a sugar or sugar derivative.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 6, 1994
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Chi-Kuen Shu, Brian M. Lawrence, Joyce R. Durham, Dwo Lynm