Patents by Inventor Donald A. Full

Donald A. Full 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: 4498858
    Abstract: A heated die (10) is divided into four segments slidable with respect to adjacent segments so that when opposing segments (12) and (16) move together and forward, segments (14) and (18) are moving out and back. Thus, friable material may be formed and drawn through die (10) by the action of the die.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: February 12, 1985
    Assignee: Philip Morris Incorporated
    Inventor: Donald A. Full
  • Patent number: 4219031
    Abstract: A smoking product comprising a porous self-supporting central core of carbonized matter circumscribed by tobacco shreds is disclosed. The preferred method for making the core of the smoking product involves the forming of a precursor rod of loosely twisted or substantially non-woven cellulosic material containing additives for ash control, and pyrolyzing said rod by heating in an inert atmosphere to produce a carbonized integral rod consisting of at least about 80 percent carbon. Tobacco shreds and a wrap are applied to the pyrolyzed core to complete the preparation of the smoking product.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: August 26, 1980
    Assignee: Philip Morris Incorporated
    Inventors: Norman B. Rainer, Donald A. Full