Smoking article mouthpiece
US11737490B2 · kind B2 · utility
0Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2018 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A mouthpiece or filter element comprising a longitudinally extending hollow rod of filtering material having inner and outer surfaces, the inner surface defining at least one longitudinally extending channel which extends along the full length of the mouthpiece or filter element, wherein the distance between the inner and outer surfaces is 1 mm or less, wherein the filtering material of the mouthpiece or filter element comprises a plasticiser, wherein the amount of plasticiser present in the filtering material is less than 21.5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.