Partially reduced nanoparticle additives to lower the amount of carbon monoxide and/or nitric oxide in the mainstream smoke of a cigarette
US7168431B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Sep 21, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B15/286
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cut filler compositions, cigarettes, methods for making cigarettes and methods for smoking cigarettes which involve the use of partially reduced nanoparticle additives capable of acting as an oxidant for the conversion of carbon monoxide to carbon dioxide and/or as a catalyst for the conversion of carbon monoxide to carbon dioxide are provided. The compositions, articles and methods of the invention can be used to reduce the amount of carbon monoxide and/or nitric oxide present in mainstream smoke. The partially reduced additive can be formed by partially reducing Fe2O3, to produce a mixture of various reduced forms such as Fe3O4, FeO and/or Fe, along with unreduced Fe2O3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.