Patents by Inventor Cynthia L. Davis

Cynthia L. Davis 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: 5322076
    Abstract: A tobacco-containing paper is provided using a reconstituted tobacco material as a component thereof. A reconstituted tobacco material, provided using papermaking techniques from a refined tobacco pulp, is refined into a pulp form and provided as a slurry in water. The slurry is combined with inorganic filler (e.g., calcium carbonate particles) and cellulosic pulp (e.g., wood pulp). The resulting slurry is then employed to provide a paper using papermaking techniques. The tobacco-containing paper has many desirable physical characteristics.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: June 21, 1994
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Paul A. Brinkley, Cynthia L. Davis, Mark L. Raker, James S. Thomasson
  • Patent number: 5261425
    Abstract: A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes an inorganic filler material and tobacco material within the web. The inner wrapping material also can include a water soluble salt burn chemical and a carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits a low inherent air permeability. The outer wrapping material can include a magnesium hydroxide filler, and exhibits an inherent air permeability of below about 15 CORESTA units and a net air permeability above about 40 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: November 16, 1993
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Mark L. Raker, Barbara W. Arzonico, Patricia F. Perfetti, Thomas L. Gentry, Cynthia L. Davis