Patent · US Active

Smoking article filters

US10264816B2 · kind B2 · utility

0Cited by

5References

8Claims

0Family size

Assignee

British American Tobacco (Investments) Limited · GB

Inventors

David L. Lewis · London, GB
Andrew E. Davis · London, GB
John Richardson · Oklahoma City, US
John Major · Pleasant Grove, US
John Sampson · London, GB

Key dates

Filing date	Oct 25, 2016
Grant date	Apr 23, 2019
Priority date	—
Expiry date	Jan 1, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA24D3/16
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The present invention relates to improvements in filters for use in smoking articles such as cigarettes, cigars and cigarillos. The improvements, particularly but not exclusively, relate to filter capabilities and to the manufacture of such filters. In one example, a filter for a smoking article comprises a first fibrous filter material having an average fiber denier in the range 7 to 9 and a second fibrous filter material having an average fiber denier of below 7. The application also describes a filter for a smoking article comprising various other filter arrangements including absorbent and/or adsorbent materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.