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, 2026
Filed:
Jun. 03, 2021
Applicant:
R.j. Reynolds Tobacco Company, Winston-Salem, NC (US);
Inventors:
Balager Ademe, Winston-Salem, NC (US);
Paul Stuart Chapman, Winston-Salem, NC (US);
Wesley Steven Jones, Lexington, NC (US);
Assignee:
R.J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D 3/02 (2006.01); A24D 3/04 (2006.01); A24D 3/06 (2006.01);
U.S. Cl.
CPC ...
A24D 3/048 (2013.01); A24D 3/061 (2013.01);
Abstract
A filter element for use in a smoking article includes a filter material comprised of paper sheet having a crimped three-dimensional structure. Polyethylene glycol, triethyl citrate, or triacetin is interacted with the filter material to increase the selective removal of semi-volatile compounds from mainstream smoke being drawn through the filter element, over the filter material alone. An associated method of making a filter element for use in a smoking article is also provided.