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:
Nov. 01, 1994
Filed:
Jun. 12, 1992
Applicant:
Inventors:
Richard L Blakley, Pfafftown, NC (US);
Gary R Shelar, Greensboro, NC (US);
Jeffery S Gentry, Pfafftown, NC (US);
Gary W Worrell, Tobaccoville, NC (US);
Thomas A Perfetti, Winston-Salem, NC (US);
Assignee:
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ;
U.S. Cl.
CPC ...
131331 ; 131342 ; 131339 ;
Abstract
Cigarettes include a filter element which have a gathered web of paper incorporating a carbonaceous material. The paper is gathered so as to include a plurality of longitudinally extending channels, and the channels provide a cross-sectional void area of about 5 to about 30 percent of the filter element.