Ventilated filter cigarette with a coaxial filter element
US5979459A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Apr 28, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/043
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention refers to a ventilated filter cigarette comprising a tobacco rod, a wrapper for the tobacco rod and a filter ventilated through ventilation openings, including a coaxial filter element, comprising a filter core, a wrapper for the filter core, a filter jacket and a wrapper for the filter jacket, in which the material specifications of the tobacco rod and the filter and the dimensions of their individual components are designed to allow the smoke to flow mainly through the filter core (upon open ventilation zone) and when covering the ventilation openings, the smoke of the cigarette flows to a major degree through the filter jacket of the coaxial filter element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.