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:
Feb. 07, 2012
Filed:
Mar. 06, 2008
San LI, Midlothian, VA (US);
Richard Jupe, Richmond, VA (US);
Georgios D. Karles, Richmond, VA (US);
Dwight Williams, Powatan, VA (US);
Raquel Olegario, Richmond, VA (US);
Michael Braunshteyn, Richmond, VA (US);
Martin Garthaffner, Chesterfield, VA (US);
Rowland W. Dwyer, Richmond, VA (US);
San Li, Midlothian, VA (US);
Richard Jupe, Richmond, VA (US);
Georgios D. Karles, Richmond, VA (US);
Dwight Williams, Powatan, VA (US);
Raquel Olegario, Richmond, VA (US);
Michael Braunshteyn, Richmond, VA (US);
Martin Garthaffner, Chesterfield, VA (US);
Rowland W. Dwyer, Richmond, 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 portion and a downstream end portion. The filter includes a ventilated cavity and a flow restrictor segment having an impermeable insert at least partially surrounded by a tubular segment of an air transmissive material upstream of the cavity. In an embodiment, the tubular segment at least partially defines the cavity.