Oxidant/catalyst nanoparticles to reduce tobacco smoke constituents such as carbon monoxide
US7017585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Nov 4, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B15/287
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cut filler compositions, cigarettes, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of nanoparticle additives capable of reducing at least one constituent from mainstream and/or sidestream tobacco smoke, the at least one constituent being selected from the group consisting of aldehyde, carbon monoxide, 1,3-butadiene, isoprene, acrolein, acrylonitrile, hydrogen cyanide, o-toluidine, 2-naphtylamine, nitrogen oxide, benzene, N-nitrosonornicotine, phenol, catechol, benz(a)anthracene, benzo(a)pyrene, and mixtures thereof. Preferably, the nanoparticle additives are effective 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 and/or catalyst for conversion of aldehydes such as acetaldehyde and acrolein, hydrocarbons such as isoprene and/or phenolic compounds such as catechol to carbon dioxide and water vapor. Methods for making a cigarette are provided, which involve (i) adding a nanoparticle additive to a cut filler; (ii) providing the cut filler comprising the additive to a cigarette making machine to form a tobacco rod; and (iii) placing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.