Cigarette filter containing dry water and microcapsules
US5975086A · kind A · utility
9Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A tobacco smoke filter consisting essentially of a porous substrate having dry water and microcapsules dispersed therein. The microcapsules comprise at least one substance selected from the group consisting of chlorophyllin, methylcellulose, sodium pyroglutamate and a vegetable oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.