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:
Mar. 03, 1992
Filed:
Jun. 26, 1990
Maria T Montoya, High Point, NC (US);
Alan B Norman, Clemmons, NC (US);
Norman C Sanders, Jr, Winston-Salem, NC (US);
Glenn E Creamer, Pfafftown, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
Cigarettes which yield very low levels of sidestream 'tar' during use comprise a paper wrapper having an air permeability of less than about 10 CORESTA units, and a blend of a tobacco filler material and a second smokable material. The second smokable material preferably includes about 60 weight percent calcium carbonate, about 30 weight percent pyrolyzed alpha-cellulose and about 10 weight percent carboxymethyl cellulose. Such cigarettes, when used, generate very low amounts of sidestream 'tar', and hence, very low levels of visible sidestream smoke.