The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1990
Filed:
Nov. 23, 1988
Brian M Lawrence, Winston-Salem, NC (US);
Robert F Moates, Winston-Salem, NC (US);
Thomas A Perfetti, Winston-Salem, NC (US);
Renee M Pogrow, Clemmons, NC (US);
Robert H Powell, Colfax, NC (US);
Jerry W Redding, Lexington, NC (US);
Cynthia A Stewart, Lexington, NC (US);
Karen M Womble, Winston-Salem, NC (US);
Milly M Wong, Winston-Salem, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
Cigarettes have a smokable filler blend comprising 60 to 75 percent tobacco cut filler and 25 to 40 percent of a second smokable cut filler consisting essentially of 50 to 70 percent calcium carbonate, 15 to 45 percent pyrolyzed cotton linters, and 7 to 12 percent polysaccharide binder. The blend is contained in a paper wrapper having a permeability from about 40 to about 75 CORESTA units. Cigarettes normally include a filter element and are air diluted to an air dilution level of from 40 to 65 percent. The smokable blend preferably is blended with a tobacco essence, and the nicotine content of the blend is greater than 2 percent. Cigarettes exhibit resistances to draw between 80 and 150 mm water pressure drop at 17.5 cc/sec. air flow. Cigarettes exhibit FTC 'tar' to nicotine ratios less than 9.