Filtered cigarette incorporating an adsorbent material
US7237558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Jul 5, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/166
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A filter element incorporating an adsorbent material is provided. The filter element may comprise a first section of filter material and a second section of filter material spaced apart to form a compartment therebetween. The compartment may be filled with one or more adsorbents or the compartment may be divided into two regions, wherein one compartment region is filled with an adsorbent and the other compartment region is either filled with an ion-exchange resin or remains empty. The section of filter material adjacent to the tobacco rod may include one or more channels therethrough for passaging smoke directly from the tobacco rod into the adsorbent-filled compartment. The mouth end section of filter material may contain a breakable capsule, wherein the breakable capsule is filled with a flavoring agent capable of altering the taste characteristics of mainstream smoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.