Patents by Inventor John M. Whitman

John M. Whitman 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).

  • Apparatus and method for manufacturing tobacco sheet material
    Patent number: 4972854
    Abstract: An apparatus and method for manufacturing tobacco sheet material comprising the steps of acoustic mixing with ultrasonic vibration a slurry containing tobacco components and forming sheets of tobacco material by casting the slurry after acoustic mixing. Additionally, the slurry is mixed with subsonic vibration and low shear mixing before the slurry is acoustic mixed. The slurry may include sized tobacco stems, sized tobacco dust and extract solution.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: November 27, 1990
    Assignee: Philip Morris Incorporated
    Inventors: Bernard C. Kiernan, Bernard A. Semp, John M. Whitman