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:
Aug. 07, 2012
Filed:
Mar. 07, 2008
San LI, Midlothian, VA (US);
Michael S. Braunshteyn, Richmond, VA (US);
Raquel M. Olegario, Chesterfield, VA (US);
Richard Jupe, Richmond, VA (US);
Martin Garthaffner, Chesterfield, VA (US);
San Li, Midlothian, VA (US);
Michael S. Braunshteyn, Richmond, VA (US);
Raquel M. Olegario, Chesterfield, VA (US);
Richard Jupe, Richmond, VA (US);
Martin Garthaffner, Chesterfield, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end and a downstream end, wherein the filter is arranged to receive mainstream smoke at the upstream end. The filter includes a tubular segment open at the downstream end thereof and a flow restrictor contained within the tubular segment. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location between the upstream end and the downstream end of the filter.