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