Patents by Inventor Barid Baran Chakraborty

Barid Baran 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: 5765570
    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: December 30, 1996
    Date of Patent: June 16, 1998
    Assignee: Brown & Williamson Tobacco Corporation
    Inventors: Elmer F. Litzinger, Barid Baran Chakraborty, William R. Conway