Patents in Class 131/345

Matches 1 - 50 out of 94

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Match	Document	Document Title
1	6779528	High surface area micro-porous fibers from polymer solutions Fibers are produced from an acetone solution of cellulose acetate by pulling or extruding such material through a spinneret in a dry spinning process. A vacuum is applied to the thus formed fibers...
2	6776168	Disintegratable cigarette filter The invention relates to a high performance cigarette filter on the basis of cellulose ester fibers or filaments which can be mechanically disintegrated. The inventive high-performance cigarette...
3	6739344	Biodegradable cellulose acetate structure and tobacco filter A cellulose acetate structure excellent in its biodegradability. At least a surface region of the structure includes a biodegradable cellulose acetate composition containing a biodegradation...
4	6615843	Tobacco smoke filter and relative composition made of antioxidant and mineral substances A tobacco smoke filter synergist composition is provided comprised of antioxidants and minerals: the former are effective as free radical scavenger and the latter are capable of reducing the other...
5	6530377	Cigarette filter containing dry water and a porphyrin A tobacco smoke filter comprising a porous substrate comprising dry water and a porphyrin dispersed therein. The porous substrate can further comprise microcapsules. The microcapsules can comprise...
6	6481442	Smoking article including a filter for selectively removing carbonyls A smoking article including a wrapper surrounding a tobacco column and a selective filter element is disclosed. The selective filter element includes at least one carrier having a developed...
7	6344239	Method for producing a tobacco filter material A method for producing a tobacco filter material which is either (A) a coating process for coating the surface of a fibrous or particulate cellulose with a cellulose ester having an average...
8	6311696	Smoking articles The invention relates to low delivery cigarettes, usually having a mainstream particulate matter delivery of about 9 mg or less. An embodiment has a rod of tobacco material and a filter element....
9	6273095	Cigarette filter which removes carcinogens and toxic chemicals Disclosed herein is a filter for use with tobacco products, such as cigarettes, cigars and pipes, which selectively absorbs toxic compounds and carcinogenic polynuclear aromatic compounds passing...
10	6206007	Cigarette with a dual-structure filter A cigarette with a dual-structure filter includes a dual-structure filter having a first filter element and a second filter element arranged downstream of the first filter element, a tobacco rod...
11	6164288	Cigarette filter containing dry water and microcapsules A tobacco smoke filter containing a porous substrate having dry water and microcapsules dispersed therein. The microcapsules contain at least one compound selected from the group consisting of...
12	6145511	Filter cigarette A description is given of a filter cigarette, whose filter a) contains fibrous filter material, b) contains an additive with an antimutagenic action on the cigarette smoke in a quantity of...
13	6062228	Biodegradable filter material and method for its manufacture There is provided a biodegradable filter tow or filter material from renewable raw materials for the use as a tobacco smoke filter element of cigarettes, cigars or pipes as well as a method for...
14	5979460	Method of producing tobacco filters A tobacco filter with a circumferential length of 17 to 27 mm is prepared by creping or embossing, with a roller of a temperature not lower than 100° C., a sheet-like material comprising not less...
15	5967149	Tobacco filter material and a method of producing the same Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter...
16	5947127	Tobacco filters and method of producing the same A filter rod is produced by adding a water-soluble polymer in the form of an aqueous solution or dispersion, or in a particulate form, to a tow of cellulose ester fiber, with the amount of any...
17	5947126	Environmentally disintegratable tobacco smoke filter rod A bundle of cellulose acetate fibers is bonded together with a water-soluble fiber-to-fiber bonding agent. The water-soluble fiber-to-fiber bonding agent may include 60-99 wt. % of a water-soluble...
18	5927287	Tobacco filter material and a tobacco filter as produced using the same A tobacco filter is produced by wrapping up a sheet-like filter material having a web structure and comprising a cellulose ester short staple into a rodform. As the cellulose ester short staple, a...
19	5913311	Cigarette filter and filter material therefor A filter material comprises a cellulose acetate fiber tow containing 5-50% by weight of a water soluble material and/or a water dispersible material which are soluble in a solvent which dissolves...
20	5860428	Cigarette filter containing a humectant A cigarette filter comprises a humectant, preferably sodium pyroglutamate, and optionally a surfactant. The humectant absorbs moisture from the tobacco smoke for wet-filtration of the tobacco smoke.
21	5856006	Tobacco filter material and a method for producing the same A tobacco filter material containing fibers which have a core and a surface layer which surrounds the core, wherein the core comprises a non-esterified cellulose and the surface layer comprises a...
22	5823201	Tobacco filters and a method of producing the same A tobacco filter with a circumferential length of 17 to 27 mm is prepared by creping or embossing, with a roller of a temperature not lower than 100° C., a sheet-like material comprising not less...
23	5738119	Filter materials Cigarette filters which comprise hydroentangled lyocell staple fibers are disclosed. High filter efficiencies, good taste properties, good resistance to staining, good physical resilience and good...
24	5728462	Cigarette filter material A cigarette filter material is provided which is free from the occurrence of acetic acid odor, even after long-term storage in a hermetically sealed condition, which ensures excellent palatability....
25	5727573	Smoker's article The smoker's article comprises a filter, a tobacco rod and a wrapper. The tobacco rod contains a catalyst consisting of a hydrated zeolite or a zeolite-like molecular sieve, the said zeolite or...
26	5690126	Tobacco filter materials and tobacco filter as produced by using the same A tobacco filter is obtained by shaping a sheet material having a web structure and comprising (1) cellulose acetate or other cellulose ester short staple, and (2) a binder fiber selected from...
27	5647383	Photodegradable cellulose ester tow The present invention is directed to a man-made fiber comprising a cellulose ester and 0.05 to 5.0% by weight of a titanium dioxide having an average particle size of less than 100 nanometers.
28	5622190	Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core A concentric smoking filter in which the peripheral filter medium is a fibrous tow, such as fibrous cellulose acetate tow, and the core filter medium is a web material, such as paper, loaded with...
29	5618620	Filter rod for filtering the smoke of a cigarette A filter rod for filtering the smoke of a cigarette including an acetate tow having a high crimp modulus and the acetate tow is bloomed and wrapped by a paper to form the filter rod, wherein a...
30	5575302	Filter for removing nitrogen oxides from tobacco smoke A filter for removing nitrogen oxides (NO x ) from tobacco smoke comprises A) a poly(arylene thioether), B) if appropriate a conventional filter material and C) if appropriate at least one...
31	5509430	Bicomponent fibers and tobacco smoke filters formed therefrom Sheath-core bicomponent fibers comprising a core of a low-cost, high strength, thermoplastic material, preferably polypropylene, completely covered with a sheath formed preferably of plasticized...
32	5507304	Polymer blend composed of cellulose acetate and starch acetate used to form fibers, films and plastic materials and a process to prepare said blend A blend of cellulose acetate and starch acetate used to make fibers, filaments, yarns, fabrics, plastic materials and other uses is disclosed. Additionally, the invention relates to the process of...
33	5495860	Structures formed from cellulose acetate, use thereof for the manufacture of filter tow, use of the filter tow for the manufacture of a tobacco smoke filter element, as well as a filter tow and a tobacco filter element Structures are formed from cellulose acetate in which an additive is present or on this surface the additive consisting of a nitrogenous organic compound which by degradation by microorganisms...
34	5462801	Filter Tow, method for the production thereof, as well as tobacco smoke filter element and method for its production A filter tow from cellulose acetate filaments and/or staple fibers is described on the surface of which an additive from cellulose chain-splitting enzymes is present, at least the surface of the...
35	5402893	Method for processing waste material in the form of filter rods, filter cigarettes and the like A method is described for processing waste materials in the form of filter rods, filter cigarettes and the like comprising filter material with inner hollow volumes accessible from the outside and...
36	5161549	Pure clean cigarette filter An improved tobacco smoke filter which retains a majority of the tar and nicotine and noxious gases from tobacco smoke. The filter is composed of fibrous filaments having equal quantities of two...
37	5155140	Use of adhesive mixtures containing gum arabic for glueing the longitudinal seam of cigarette tube The use of adhesive mixtures containing--per 100 parts by weight water--40 to 120 parts gum arabic, 3 to 80 parts by weight water soluble starch degradation products and/or carboxymethyl starch...
38	5150723	Process for the production of tobacco smoke filters Disclosed is a novel tobacco smoke filter material comprising a filter element such as cellulose acetate crimped tow having at least about 1 weight percent of micro acicular crystals of a compound...
39	5150721	Tobacco smoke filter material and process for production thereof Disclosed is a novel process of preparing tobacco smoke filter material, wherein an acidic compound such as citric acid is dissolved in a cellulose acetate spinning solution prior to spinning the...
40	5083579	Composition for absorbing nitrogen oxide from tobacco smoke, method for absorbing nitrogen oxide using said composition, filter for purifying tobacco smoke using said composition, and method for impregnating the base of a filter with said composition The invention consists of a method for absorbing nitrogen oxide and carbon monoxide from tobacco smoke. It includes a base made of acetate, cellulose and acetate-cellulose fibers. The base is...
41	5060672	Highly efficient tobacco smoke filter The invention relates to a novel, highly efficient tobacco smoke filter provided with mechanically (fibrous) and/or adsorptively filtering materials as well as chemosorptively filtering components,...
42	5052415	Process for the impregnation of fibers of a tobacco smoke filter with dicarboxylic or polycarboxylic acids or anhydrides thereof Fibers of tobacco smoke filters which have been impregnated with dicarboxylic or polycarboxylic acids or anhydrides thereof can be obtained by dissolving anhydrides of dicarboxylic or...
43	5038803	Method and device for control of by-products from cigarette smoke Method for controlling delivery of by-products found in cigarette smoke by utilizing a cigarette filter element comprising one or more substrates treated with an effective amount of at least one of...
44	5033484	Ventilated filter cigarette The ventilated filter cigarettes of the present invention have an American-blend flavor. The cigarettes comprise Virginia tobacco with main stream smoke have a condensate/nicotine ratio of 5:1 to...
45	5022964	Nonwoven fibrous web for tobacco filter A nonwoven fibrous web material that contains cellulose ester fibers, cellulose ester fibrets and a minor amount of activated fusible fibers uniformly dispersed throughout is particularly well...
46	5009239	Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke A process for improving selective filter retention and pass through properties of cigarette filter elements by treating with polyethyleneimine modified to a predetermined pH range with one or more...
47	4964426	Tobacco smoke filters and process for production thereof Disclosed is a novel tobacco smoke filter material comprising a filter element such as cellulose acetate crimped tow having at least about 1 weight percent of micro acicular crystals of a compound...
48	4896683	Selective delivery and retention of nicotine by-product from cigarette smoke A method for controlling nicotine delivery through a cigarette filter relative to total particulate pass-through concentration, and the corresponding filter utilizing, as a filter modifier...
49	4865055	Ventilated cigarette of uniform flavor A ventilated cigarette having a filter consisting of filtering material wrapped in an outer cover strip having a number of radial ventilating holes; at least the portion of the aforementioned...
50	4821750	Cigarette filters Skinless shaped articles having increased specific surface area and based on cellulose esters, including both solid and hollow fibers, can be produced with at least one surface having a striated or...

Matches 1 - 50 out of 94

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