Smoking article filter and insertable filter unit therefor
US11678694B2 · kind B2 · utility
1Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2020 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jul 29, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article filter includes a recess to receive a filter insert unit. The filter insert unit is secured to the filter once inserted. The filter and the filter insert unit may include additives such as flavourants, colourants or sorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.