Cigarette
US4942888A · kind A · utility
59Cited by
48References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Jan 18, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D1/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cigarettes which yield very low levels of sidestream "tar" during use comprise a paper wrapper having an air permeability of less than about 10 CORESTA units, and a blend of a tobacco filler material and a second smokable material. The second smokable material preferably includes about 60 weight percent calcium carbonate, about 30 weight percent pyrolyzed alpha-cellulose and about 10 weight percent carboxymethyl cellulose. Such cigarettes, when used, generate very low amounts of sidestream "tar," and hence, very low levels of visible sidestream smoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.