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:
Apr. 23, 2013
Filed:
Aug. 07, 2007
Applicants:
Michael Braunshteyn, Richmond, VA (US);
San LI, Midlothian, VA (US);
Raquel Olegario, Richmond, VA (US);
Inventors:
Michael Braunshteyn, Richmond, VA (US);
San Li, Midlothian, VA (US);
Raquel Olegario, Richmond, VA (US);
Assignee:
Philip Morris USA Inc., Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24D 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A smoking article having a filter segment that establishes both a desired resistance to draw and a mixing of mainstream smoke with ventilation air. The filter segment includes a fluted portion, a frusto-conical portion and axially extending orifices establishing fluid communication between the frusto-conical portion and voids between one or more walls of the fluted portion.