Patents by Inventor Roy L. Prowse

Roy L. Prowse 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).

  • Processing of tobacco leaves
    Patent number: 5165426
    Abstract: Lamina and stem components of tobacco leaf are fed simultaneously to a milling machine such that there is produced a fluent mixture of lamina and stem particles. The mixture, with little or no further particle size reduction can be fed to a cigarette making machine.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: November 24, 1992
    Assignee: British-American Tobacco Company Limited
    Inventors: Barbara C. Klammer, David J. Molyneux, Roy L. Prowse
  • Processing of tobacco leaves
    Patent number: 5148820
    Abstract: Whole tobacco leaf is fed to a milling machine such that there is produced a mixture of lamina flakes and intact stem lengths. The lamina fraction, with little or no further particle size reduction can be fed to a cigarette making machine. The stem fraction can be discarded or processed according to conventional methods.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: September 22, 1992
    Assignee: British-American Tobacco Company Limited
    Inventors: Barbara C. Klammer, Roy L. Prowse