Patent · US Active

Cigarettes and cigarette filters including activated carbon for removing nitric oxide

US8905042B2 · kind B2 · utility

4Cited by

12References

8Claims

0Family size

Assignee

Philip Morris USA Inc. · US

Inventors

Wei Zhang · Nanjing, CN
Mark Zhuang · Richmond, US
Shahryar Rabiei · Greer, US
Firooz Rasouli · Pully, CH

Key dates

Filing date	Aug 27, 2013
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Aug 27, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D24/001
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Filters and cigarettes include an activated carbon sorbent capable of selectively removing nitric oxide from mainstream tobacco smoke. Methods for making cigarette filters and cigarettes using the activated carbon sorbent and methods for treating mainstream tobacco smoke produced by smoking a cigarette comprising the sorbent are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.