Filter element
US7762267B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2003 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/163
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The aim of the invention is to obtain filter tows or filtering materials for manufacturing filters for smoking products which make it possible to prevent or at least reduce health risks due to the release of the filter components and external contamination of cigarettes by filter components. According to the invention, a filter element is manufactured of starch and/or a mixture of a starch-based polymer and eventually incorporated activated-carbon layers and provided with pores and/or channels. The filter particles eventually adherent to such filtering materials or released during cigarette smoking can be dissolved in a corresponding moisture-containing environment. They do not come into consideration for health-damaging effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.