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. 26, 2013
Filed:
Dec. 22, 2003
Zhaohua Luan, Midlothian, VA (US);
Diane L. Gee, Richmond, VA (US);
Jose Nepomuceno, Beaverdam, VA (US);
Shuzhong Zhuang, Midlothian, VA (US);
Jay a Fournier, Richmond, VA (US);
Zhaohua Luan, Midlothian, VA (US);
Diane L. Gee, Richmond, VA (US);
Jose Nepomuceno, Beaverdam, VA (US);
Shuzhong Zhuang, Midlothian, VA (US);
Jay A Fournier, Richmond, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
Smoking articles, filters, and methods for selectively removing selected components from tobacco smoke are disclosed. The smoking articles and filters include composites composed of a porous alumina and/or aluminosilicate matrix containing particles of activated carbon and zeolite molecular sieve adsorbents distributed throughout the matrix which can selectively remove selected components of tobacco smoke. The composites may be made by admixing the adsorbent mixture and a binder such as aluminum hydroxide or montmorillonite clay, adding an aqueous mineral acid to gel the mixture and drying and firing the gel paste. The proportions and adsorption capacities of the components can be selected to tailor the adsorption characteristics of the composites to selectively remove targeted constituents such as acrolein and 1,3-butadiene in tobacco smoke. Methods for making filters and smoking articles using the composites, as well as methods for smoking products comprising the composites, are also provided.