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. 26, 2013
Filed:
Oct. 09, 2009
Georgios Karles, Richmond, VA (US);
Shuzhong Zhuang, Richmond, VA (US);
Yi Zeng, Richmond, VA (US);
Hongwei Liu, Appleton, WI (US);
Daqing Wu, Richmond, VA (US);
Georgios Karles, Richmond, VA (US);
Shuzhong Zhuang, Richmond, VA (US);
Yi Zeng, Richmond, VA (US);
Hongwei Liu, Appleton, WI (US);
Daqing Wu, Richmond, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A process for producing a coated filter plug for a smoking article including: (a) incorporating an additive to a porous filter plug, thereby obtaining an impregnated filter plug; (b) coating a surface of the impregnated filter plug with a cross-linkable polymer material; and (c) cross-linking the cross-linkable polymer material, to form a cross-linked, breakable coating substantially enclosing the impregnated filter plug. The process may further include at least partially coating the impregnated filter plug with a cross-linking agent prior to, or subsequent to, coating with the cross-linkable polymer material.