Cigarette
US5159944A · kind A · utility
44Cited by
26References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1990 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | May 24, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D1/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler) circumscribed by two layers of paper wrapping materials. The first or inner wrapping material includes a cellulosic base web and carbonaceous material within the web. The second or outer wrapping material circumscribes and overwraps the first wrapping material, has a cellulosic base web and inorganic filler material, and exhibits an air permeability of below about 8 CORESTA units. The cigarette is capable of sustaining smolder under FTC smoking conditions while yielding very low levels of visible sidestream smoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.