Patent · US Expired

Smoking article

US4924888A · kind A · utility

218Cited by

39References

45Claims

0Family size

Assignee

R.J. REYNOLDS TOBACCO COMPANY · US

Inventors

Thomas A. Perfetti · Winston-Salem, US
Alan B. Norman · Clemmons, US
Michael Francis Dube · Winston-Salem, US

Key dates

Filing date	May 15, 1987
Grant date	May 15, 1990
Priority date	—
Expiry date	May 15, 2007

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D1/00
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

Cigarettes having low efficiency filters, rods of cut filler having a low packing density, and paper wraps having a high net permeabilities and low inherent permeabilities can yield good taste, low gas phase mainstream deliveries as well as low amounts of visible sidestream smoke. Typical cigarettes have relatively large amounts of volume expanded flue-cured tobacco materials as cut filler, paper wraps containing magnesium oxide and/or magnesium hydroxide, and relatively high levels of air dilution.

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