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:
Jan. 15, 2013
Filed:
Jul. 11, 2007
Michael Braunshteyn, Richmond, VA (US);
Rowland W. Dwyer, Richmond, VA (US);
San LI, Midlothian, VA (US);
Raquel Olegario, Richmond, VA (US);
Gail Yoss, Chesterfield, VA (US);
Michael Braunshteyn, Richmond, VA (US);
Rowland W. Dwyer, Richmond, VA (US);
San Li, Midlothian, VA (US);
Raquel Olegario, Richmond, VA (US);
Gail Yoss, Chesterfield, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A smoking article having a cylinder of smoking material and a filter system attached to the cylinder of smoking material. The filter system includes an upstream plug of filtering material, a downstream plug of filtering material, and a cavity between the upstream plug of filtering material and the downstream plug of filtering material. A flow restrictor is positioned within the cavity and has at least one orifice and a series of perforations provide ventilation to the smoking article.