Patents by Inventor Barid B. Chakraborty

Barid B. Chakraborty 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).

  • Patent number: 5377698
    Abstract: A process for the manufacture of a reconstituted tobacco product wherein the process comprises extraction of tobacco furnish with an aqueous solvent in the presence of at least one ammonium salt or urea or a urea derivative or a mixture of urea or a urea derivative and at least one ammonium salt to provide an aqueous solvent extract and a fibrous material and forming the fibrous material into a sheet-like product using the papermaking process. The aqueous extract is then applied to the formed sheet-like material and further processing provides a reconstituted tobacco product having improved smoke quality.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: January 3, 1995
    Assignee: Brown & Williamson Tobacco Corporation
    Inventors: Elmer F. Litzinger, Barid B. Chakraborty, William R. Conway