Patents Assigned to Brown & Williamson Tobaccco Corporation
  • Method and apparatus for denitrating tobacco stem material
    Patent number: 5791353
    Abstract: The invention relates to a method of denitrating tobacco stem material in which the tobacco stem material is input at a first point in a housing, guided through a solvent and output at a second point from the housing, the complete method being implemented at an overpressure, and to an apparatus for implementing the method with an elongated, approximately cylindrical housing and at least one rotatable feeder screw, said housing being configured pressure-tight and comprising locks or nozzles or inputting and/or outputting process flows.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: August 11, 1998
    Assignee: Brown & Williamson Tobaccco Corporation
    Inventors: Gitta Junemann, Gerald Schmekel, Arno Weiss, Wilfried Stiller