A24D 3/12

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9386803 Tobacco smoke filter for smoking device with porous mass of active particulateDec 30, 10Jul 12, 16ACETATE INTERNATIONAL LLC
9185935 Smoking article filtersMay 02, 13Nov 17, 15BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED, British American Tobacco (Invesments) Limited,
9119420 Filter element comprising multifunctional fibrous smoke-altering materialApr 01, 14Sep 01, 15R.J. REYNOLDS TOBACCO COMPANY
8720450 Filter element comprising multifunctional fibrous smoke-altering materialJul 30, 10May 13, 14R.J. REYNOLDS TOBACCO COMPANY
7624739 Tubular cigarette device comprising cerium oxideNov 09, 05Dec 01, 09ROTHMANS, BENSON & HEDGES INC.
5657772 Smoking article and filter thereforDec 13, 94Aug 19, 97ROTHMANS INTERNATIONAL SERVICES LIMITED
5462072 Removal of nicotine from tobacco smokeJan 18, 94Oct 31, 95CNA HOLDINGS, INC.
5105834 Cigarette and cigarette filter element thereforNov 06, 90Apr 21, 92R.J. REYNOLDS TOBACCO COMPANY
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 compositionJul 14, 89Jan 28, 92Not available
5057158 Ethyl campholenates and dihydro derivatives thereof as flavorants and odorantsSep 30, 86Oct 15, 91Givaudan Corporation
4907609 Method of increasing the hardness of cigarette filter elementsAug 24, 88Mar 13, 90DEUTSCHE BANK AG NEW YORK BRANCH
4700723 Tobacco filter and fibrous ion exchange resinJan 20, 84Oct 20, 87TORAY INDUSTRIES, INC.
4662384 Smoking articlesJun 22, 83May 05, 87R.J. REYNOLDS TOBACCO COMPANY
4517995 Filters for polynuclear aromatic hydrocarbon-containing smokeOct 23, 81May 21, 85Materials Evolution and Development USA, Inc.
4350173 Filter materialNov 27, 79Sep 21, 82CACIGA SYSTEMS AB
4300577 Tobacco-smoke filtersMay 11, 79Nov 17, 81British-American Tobacco Company Limited