Patent · US Expired

Smoking articles

US6257243A · kind A · utility

10Cited by

2References

41Claims

0Family size

Assignee

Brown & Williamson Tobacco Corporation · US

Inventors

Bernd-Henrik Muller · Hamburg, DE
Adolf Schluter · Artern, DE
Werner Schneider · Erbach, DE
Christopher Cook · Houston, US
Joseph Wanna · Macon, US
Frank Kelley St. Charles · Perry, US

Key dates

Filing date	Sep 9, 1999
Grant date	Jul 10, 2001
Priority date	—
Expiry date	Sep 9, 2019

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/04
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to a coaxial smoking article, particularly a coaxial cigarette, comprising a coaxial rod of smokable material, which rod has an inner segment (1) of smokable material surrounded by a covering (2), around which covering is an outer segment (3) of combustible or thermally destructible/decomposable material, which outer segment is also surrounded by a covering (4). The combustible or thermally destructible/decomposable material of the outer segment contains no or only a very small proportion of spot-forming substances. Further, the coverings of the inner and outer segments are such that spot-forming substances in the inner segment are essentially unable to reach the outside of the covering. Hence, a cigarette having reduced potential for the production of spotting is so formed.

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