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. 24, 1998
Filed:
Jan. 29, 1996
Chandra Kumar Banerjee, Pfafftown, NC (US);
Timothy Brian Nestor, Winston-Salem, NC (US);
Jeffery Scott Gentry, Pfafftown, NC (US);
Elbert Curtis Jones, Jr, Sherrill's Ford, NC (US);
Roger Grady Hayworth, High Point, NC (US);
Joanne Naomi Taylor, Germanton, NC (US);
R.J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Abstract
A cigarette smoking article achieves very low levels of CO and other gas phase components by means of substantial air dilution, but has an acceptable pressure drop and sufficient delivery of particulate matter to provide a flavorful smoke. The filter has two sections, an upstream section which has substantially no pressure drop thereacross and a downstream section which provides substantially all the pressure drop of the filter. Dilution air is admitted to the upstream section of the filter to mix with mainstream smoke before it passes through the downstream section of the filter and thereby reduce the CO and gas phase levels in the smoke.