Smoking article filter and insertable filter unit therefor
US10729171B2 · kind B2 · utility
5Cited by
16References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2012 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Sep 5, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article filter (20) comprises a recess (25) to receive a filter insert unit (30). The filter insert unit (30) is secured to the filter (20) once inserted. The filter (20) and the filter insert unit (30) may comprise additives such as flavourants, colourants or sorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.