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:
Nov. 09, 2004
Filed:
Apr. 02, 2003
Shuzhong Zhuang, Richmond, VA (US);
John B. Paine, III, Midlothian, VA (US);
Timothy S. Sherwood, Midlothian, VA (US);
Jay A Fournier, Richmond, VA (US);
Kent B. Koller, Chesterfield, VA (US);
Zhaohua Luan, Midothian, VA (US);
Charles E. Thomas, Jr., Richmond, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A filter includes at least two monolithic sorbent segments and a mixing segment between the two monolithic sorbent segments. The monolithic sorbent segments comprise porous sorbent materials that are capable of selectively removing one or more selected gaseous constituents from a gas flow. The filter can be incorporated in a smoking article, such as a cigarette, to remove one or more selected constituents from mainstream smoke. Methods for making the filter and smoking articles including the filter, as well as methods for smoking a cigarette comprising the filter, are also provided.