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:
Mar. 08, 2005
Filed:
Aug. 30, 2002
Lixin Xue, Midlothian, VA (US);
Charles Edwin Thomas, Jr., Richmond, VA (US);
Liqun Yu, Midlothian, VA (US);
Kent B. Koller, Chesterfield, VA (US);
Lixin Xue, Midlothian, VA (US);
Charles Edwin Thomas, Jr., Richmond, VA (US);
Liqun Yu, Midlothian, VA (US);
Kent B. Koller, Chesterfield, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstream smoke through sorption. The unfunctionalized porous polyaromatic resin may be a polymerization product of non-polar styrene and divinyl benzene. Various gas phase constituent can be removed from mainstream tobacco smoke, such as dienes, furans, pyrroles, aromatics and ketones, for example. The cigarette filters and cigarettes can provide low resistance-to-draw and/or high total particulate matter delivery. Additionally, the unfunctionalized porous polyaromatic resin may further include flavorant(s).