Patent · US Expired

Ultralight coaxial cigarette including a multipart filter

US6089238A · kind A · utility

24Cited by

6References

9Claims

0Family size

Assignee

Brown & Williamson Tobacco Corporation · US

Inventors

Werner Schneider · Erbach, DE
Adolf Schluter · Artern, DE
Erwin Kausch · Bayreuth, DE
Volker Heemann · Goldkronach, DE
Ursula Kopke · Bayreuth, DE
Wolfgang Metzner · Krefeld, DE
Bernd-Henrik Muller · Hamburg, DE
Heiner Ritter · Bremen, DE

Key dates

Filing date	May 19, 1998
Grant date	Jul 18, 2000
Priority date	—
Expiry date	May 19, 2018

Classification

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

Abstract

The invention relates to a coaxial cigarette including a coaxial tobacco rod comprising a rod core, a rod core wrapping, a rod jacket and a rod jacket wrapping and a multi-part ventilated filter wherein the filter comprises a filter wrapping as well as at least two longitudinal segments of which at least one is a coaxial filter segment having a core element, a core element wrapping and a jacket element and wherein the ratio of the resistance to draw of the rod core to the resistance to draw of the rod jacket is greater than unity and preferably in the range of 2 to 4.

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