Patents Assigned to Rothmans, Benson & Hedges Inc. et al.
  • Control of cigarette smoke chemistry
    Patent number: 5826592
    Abstract: A cigarette smoke filter element is provided which permits a higher level of flavor to reach the smoker during initial smoking of the cigarette and consequently an enhanced flavor-to-tar ratio, by employing an elongate filter of microfine fibers which is provided with openings therethrough at the upstream end.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: October 27, 1998
    Assignee: Rothmans, Benson & Hedges Inc. et al.
    Inventor: Warren A. Brackmann