Patent · US Active

Enhanced subjective activated carbon cigarette

US8905037B2 · kind B2 · utility

9Cited by

121References

19Claims

0Family size

Assignee

Philip Morris Inc. · US

Inventors

Peter Lipowicz · Midlothian, US
Firooz Rasouli · Pully, CH

Key dates

Filing date	Oct 15, 2009
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Oct 24, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/041
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A smoking article having a tobacco rod and a filter attached to the tobacco rod, which filters the first puff differently than subsequent puffs. The tobacco rod includes an inner rod of tobacco material having an impervious outer wrap and an impervious cap at an upstream end thereof and an outer rod of tobacco material, wherein the inner rod of tobacco material is concentrically positioned with respect to the outer rod of tobacco material. The filter includes an outer cellulose acetate filter and an inner activated carbon filter, wherein the inner activated carbon filter is concentrically positioned with respect to the outer cellulose acetate filter.

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