Smoking articles
US4881555A · kind A · utility
35Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/048
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
There is provided a cigarette 10 having a tobacco rod 12 and a filter plug 14. Between the rod 12 and the plug 14 is disposed a porous element 16 containing an aroma precursor which, when the cigarette smoulders down to the butt, is burnt by the coal to release an agreeable aroma into the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.