Patent · US Active

Smoking article and a method of manufacturing a smoking article

US9861123B2 · kind B2 · utility

0Cited by

5References

14Claims

0Family size

Assignee

British American Tobacco (Investments) Limited · GB

Inventor

Karl Kaljura · London, GB

Key dates

Filing date	Oct 2, 2013
Grant date	Jan 9, 2018
Priority date	—
Expiry date	Oct 2, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/043
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A smoking article comprises a first filter section, and a second filter section located downstream of the first filter section. The first filter section comprises a material with a first pressure drop per unit length, the second filter section comprises a material with a second pressure drop per unit length, and the second pressure drop per unit length is greater than the first pressure drop per unit length. The smoking article comprises a ventilation system configured to selectively provide ingress of a variable level of ventilating air.

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