| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 131334000 | By chemical reaction, e.g., ion-exchange, chelating, catalytic, etc. | 17 |
| 20110174324 | DEGRADABLE CIGARETTE FILTER: PILL WITH MULTILAYERED COATING - A degradable cigarette filter includes a filter element of a bloomed cellulose acetate tow and a plug wrap surrounding the filter element, and a pill dispersed in the tow. The pill includes a material adapted to catalyze hydrolysis of the cellulose acetate tow that is encapsulated with an inner layer of a water soluble or water permeable material and an outer layer of a cellulose acetate having a D.S. in the range of 2.0-2.6. | 07-21-2011 |
| 20130032160 | Porous Catalytic Matrices for Elimination of Toxicants Found in Tobacco Combustion Products - Described herein are compositions and methods for capturing carbonylic or phenolic toxicants, or converting these toxicants into less volatile compounds. The toxicants, which may be a component of cigarette smoke, may be captured by physical or chemical adsorption, absorption, or entrapment. | 02-07-2013 |
| 20090044818 | Carbonaceous heat source composition for non-combustion type smoking article and non-combustion type smoking article - A carbonaceous heat source composition for a non-combustion type smoking article according to the present invention includes carbon and 0.5 to 5% by weight of a polyhydric alcohol. Also, a non-combustion type smoking article according to the present invention is provided with such a heat source. | 02-19-2009 |
| 20100132725 | REDUCTION OF CARBON MONOXIDE AND NITRIC OXIDE IN SMOKING ARTICLES USING NANOSCALE PARTICLES AND/OR CLUSTERS OF NITRIDED TRANSITION METAL OXIDES - Smoking article components, cigarettes, methods for making cigarettes and methods for smoking cigarettes are provided that use nitrided transition metal oxide nanoscale particles and/or nitrided transition metal oxide clusters capable of catalyzing and/or oxidizing carbon monoxide to carbon dioxide and/or adsorbing carbon monoxide and catalyzing and/or reducing nitric oxide to nitrogen and/or adsorbing nitric oxide. Cut filler compositions, cigarette paper and cigarette filter material can comprise nitrided transition metal oxide nanoscale particles and/or nitrided transition metal oxide clusters. | 06-03-2010 |
| 20100132726 | APPROACHES TO IDENTIFY LESS HARMFUL TOBACCO AND TOBACCO PRODUCTS - Aspects of the invention concern methods for detecting, identifying and evaluating tobacco and tobacco products to determine the potential that these compositions have to contribute to a tobacco-related disease. It is based, at least in part; on the discovery that exposure of pulmonary cells to smoke or smoke condensate obtained from tobacco or tobacco products induces double stranded breaks in cellular DNA, which were efficiently detected using assays that measure the presence, absence, or amount of phosphorylation of the histone, H2AX. | 06-03-2010 |
| 20090120449 | SMOKING MACHINE - A smoking machine for smoking a smoking article is disclosed. The smoking machine comprises one or more electrochemical cells for analyzing the composition of a smoke stream from the smoking article. This can allow a gas or vapor phase chemical to be analyzed directly in real time without the need for pre-conditioning or preparation. | 05-14-2009 |
| 20090283104 | Smoking Articles Having Reduced Carbon Monoxide Delivery - The present invention is directed to smoking articles having reduced carbon monoxide delivery are described. A carbon monoxide reducing agent is incorporated into the smoking article in order to reduce carbon monoxide levels in mainstream smoke. The carbon monoxide reducing agent may be, for instance, in metal oxide or in metal carbonate. The carbon monoxide reducing agent may be incorporated into a wrapper and/or into a column of smokable filler that are used to construct the smoking article. | 11-19-2009 |
| 20090071489 | In situ synthesis of composite nanoscale particles - A method of making composite nanoscale particles comprising subjecting a starting material to laser energy so as to form a vapor and condensing the vapor so as to form the composite nanoscale particles, wherein said composite nanoscale particles comprise a first metal and/or a first metal oxide incorporated in nanoscale particles of an oxide of a second metal, the first metal being different than the second metal. The starting material can comprise first and second metals or compounds of the first and second metals. The composite nanoscale particles can be formed in a reaction chamber wherein a temperature gradient is provided. The atmosphere in the chamber can be an inert atmosphere comprising argon or a reactive atmosphere comprising oxygen. The composite nanoscale particles are useful for low-temperature and near-ambient temperature catalysis. The composite nanoscale particles can be incorporated in the tobacco cut filler, cigarette paper and/or cigarette filter material of a cigarette to catalyze the oxidation of carbon monoxide to carbon dioxide. | 03-19-2009 |
| 20090032038 | METHOD OF TREATING TOBACCO MAINSTREAM SMOKE AND SMOKING TOOL - There is provided a smoking tool that is capable of selectively removing carbon monoxide in tobacco mainstream smoke. The smoking tool includes a catalyst packed section packed with an oxidation catalyst capable of selectively removing carbon monoxide relative to nicotine among components of the tobacco mainstream smoke, into which tobacco mainstream smoke is introduced, and a heater heating the catalyst packed section. | 02-05-2009 |
| 20100319718 | Ventilated smoking article - The invention concerns a smoking article filter plug ( | 12-23-2010 |
| 20120204890 | HIGHLY-ORDERED NANOSTRUCTURE ARRAYS AND METHODS OF PREPARATION THEREOF - Highly-ordered nanostructure arrays and methods of preparation of the highly-ordered nanostructure arrays for adsorption of pollutants are disclosed. The highly-ordered nanostructure arrays can be vertically aligned metal oxide nanotube arrays having metal-deposited carbon nanotubes within the nanostructures. The metal-deposited carbon nanotubes within the nanostructures increase the adsorption of the pollutants, as discussed in greater detail below. The highly-ordered nanostructure arrays can be included in various filters, such as cigarette filters, to adsorb carcinogens and pollutants from the tobacco smoke. | 08-16-2012 |
| 20110108044 | FILTER ELEMENT COMPRISING SMOKE-ALTERING MATERIAL - The invention provides a filter element of a smoking article having a longitudinal axis and adapted for filtration of mainstream smoke generated by the smoking article, the filter element including a first region extending along the longitudinal axis of the filter element and exhibiting a first pressure drop and a second region extending along the longitudinal axis of the filter element and exhibiting a second pressure drop lower than said first pressure drop, wherein the first and second regions are arranged in a side-by-side configuration such that both regions are visible in a cross-section of the filter element perpendicular to the longitudinal axis, and wherein mainstream smoke can move from the second region into the first region, and further comprising a smoke-altering material, such as an oxidation catalyst, positioned in the first region. | 05-12-2011 |
| 20120012124 | Smoking Articles Having Reduced Carbon Monoxide Delivery - The present invention is directed to smoking articles having reduced carbon monoxide delivery are described. A carbon monoxide reducing agent is incorporated into the smoking article in order to reduce carbon monoxide levels in mainstream smoke. The carbon monoxide reducing agent may be, for instance, in metal oxide or in metal carbonate. The carbon monoxide reducing agent may be incorporated into a wrapper and/or into a column of smokable filler that are used to construct the smoking article. | 01-19-2012 |
| 20120012123 | COMPOSITIONS, ARTICLES AND METHODS FOR PREVENTING OR REDUCING TOBACCO-ASSOCIATED DAMAGE - Articles of manufacturing, methods, devices and compositions for preventing or reducing tobacco-associated damage in a subject, and which utilize a metal ion chelating agent, a copper chelating agent, a penicillamine and/or a structural analog of penicillamine, with and without an additional antioxidant, are disclosed. | 01-19-2012 |
| 20120132219 | CIGARETTE FILTER - The invention relates to a special, highly efficient cigarette filter. In particular, the invention relates to a new cigarette filter, in which materials of natural origin not used before in this special field are applied. More particularly, the present invention relates to a special, highly efficient cigarette filter, which can be used favorably for adsorbing the toxic components of the cigarette smoke, and neutralizing the free radicals produced during burning of the cigarette. | 05-31-2012 |
| 20120255569 | FILTERED CIGARETTE COMPRISING A TUBULAR ELEMENT IN FILTER - The invention provides a cigarette with a filter element comprising at least one longitudinally extending section of filter material. The section of filter material comprises a smoke-altering material therein that is useful for removing a quantity of vapor phase chemicals from the mainstream smoke. The section of filter material further comprises one or more tubes inserted into and extending through section of filter material. The one or more tubes each define a channel adapted for passage of mainstream smoke through the section of filter material while substantially avoiding contact of the portion of mainstream smoke therein with the smoke-altering material. The provision of a portion of mainstream smoke substantially unaltered by the smoke-altering material can be useful to retain certain desirable taste and other sensory properties of the mainstream smoke. | 10-11-2012 |
| 20100132724 | FILTER CIGARILLO - The disclosure relates to a filter cigarillo ( | 06-03-2010 |
