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:
Oct. 29, 1996
Filed:
Jun. 22, 1994
Jeffery S Gentry, Pfafftown, NC (US);
Karen M Womble, Winston-Salem, NC (US);
Chandra K Banerjee, Pfafftown, NC (US);
Richard L Blakley, Pfafftown, NC (US);
Russell D Barnes, Belews Creek, NC (US);
Donald A Calleson, Winston-Salem, NC (US);
Henry T Ridings, Lewisville, NC (US);
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
A cigarette includes a filter element including a carbon-containing paper or a paper containing molecular sieves. The paper contacts the filter material, such as cellulose acetate tow, within the filter element, either by circumscribing the filter material or by being gathered with non-carbon-containing filter material. The paper is useful as a plug wrap for a filter element. In several embodiments, longitudinal grooves are provided on the periphery of the filter element.