Cigarette
US5050622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1991 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Aug 22, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D1/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cigarettes which yield low levels of visible sidestream smoke upon use employ a paper wrapping material having about 8 weight percent magnesium hydroxide, about 30 weight percent calcium carbonate and about 62 weight percent flax. The wrapping material has an inherent permeability of about 10 CORESTA units. The wrapping material contains an amount of water soluble alkali metal salt (e.g., potassium chloride and potassium malate) sufficient to provide at least about 35 mg water soluble alkali metal ions per gram of dry base web. The alkali metal salt normally is such that the wrapping material includes a significantly greater level of potassium ions than sodium ions. The wrapping material includes at least one organic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.