Cigarette filter
US4109666A · kind A · utility
10Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1976 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Mar 1, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0279
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A filter tipped cigarette includes a cylindrical tobacco section and a cylindrical filter axially aligned therewith. The filter is comprised of an axially aligned tube extending from said tobacco section, a layer of filter material positioned circumferentially about said tube and a diffuser adjacent an end of the tube for dispersing the smoke received from the tube prior to entering the smoker's mouth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.