|
| US4295478 | 11 Apr 1979 | 20 Oct 1981 | RJR Archer, Inc. | Composite tipping structure for use on an air-ventilated cigarette and method of manufacturing same |
| US4433696 | 2 Oct 1981 | 28 Feb 1984 | Philip Morris Incorporated | Variable dilution filter |
| US4452259 | 10 Jul 1981 | 5 Jun 1984 | Loews Theatres, Inc. | Smoking articles having a reduced free burn time |
| US4526183 | 22 Feb 1984 | 2 Jul 1985 | Philip Morris Incorporated | Filter cigarette |
| US4527573 | 5 Nov 1982 | 9 Jul 1985 | Philip Morris Incorporated | Filter cigarette |
| US4532943 | 30 Sep 1982 | 6 Aug 1985 | Philip Morris Incorporated | Adjustable filter cigarette |
| US4570649 | 22 Feb 1984 | 18 Feb 1986 | Philip Morris Incorporated | Filter cigarette |
| US4593707 | 14 Jun 1985 | 10 Jun 1986 | H.F. & Ph.F. Reemtsma GmbH & Co. | Variably ventilated filter cigarette |
| US4596258 | 18 May 1984 | 24 Jun 1986 | | Smoking devices |
| US4601298 | 14 Jan 1985 | 22 Jul 1986 | Philip Morris Incorporated | Filter cigarette |
| US4646763 | 19 Nov 1985 | 3 Mar 1987 | Philip Morris Incorporated | Adjustable filter cigarette |
| US4649941 | 16 Dec 1985 | 17 Mar 1987 | R. J. Reynolds Tobacco Company | Adjustable air dilution cigarette exhibiting controlled pressure drop |
| US4649944 | 14 Aug 1984 | 17 Mar 1987 | Philip Morris Incorporated | Filter cigarette |
| US4649945 | 5 Dec 1985 | 17 Mar 1987 | R. J. Reynolds Tobacco Company | Adjustable air dilution cigarette exhibiting controlled pressure drop |
| US4687008 | 17 Apr 1986 | 18 Aug 1987 | Philip Morris Incorporated | Filter cigarette |
| US4687009 | 24 Feb 1986 | 18 Aug 1987 | Philip Morris Incorporated | Adjustable filter cigarette and method of manufacture thereof |
| US4696314 | 17 Apr 1986 | 29 Sep 1987 | Philip Morris Incorporated | Filter cigarette |
| US4699158 | 17 Apr 1986 | 13 Oct 1987 | Philip Morris Incorporated | Adjustable filter cigarette with tactile indicator |
| US4700725 | 17 Apr 1986 | 20 Oct 1987 | Philip Morris Incorporated | Adjustable filter cigarette |
| US4711254 | 14 Mar 1986 | 8 Dec 1987 | | Cigar holder |
| US4716912 | 14 Feb 1986 | 5 Jan 1988 | R. J. Reynolds Tobacco Company | Filter cigarette having adjustable air dilution |
| US4747418 | 22 Aug 1986 | 31 May 1988 | Baumgartner Papiers S.A. | Cigarette filter unit |
| US4809718 | 6 May 1987 | 7 Mar 1989 | R. J. Reynolds Tobacco Company | Variable air dilution cigarette filters |
| US4949736 | 16 Mar 1988 | 21 Aug 1990 | R. J. Reynolds Tobacco Company | Variable ventilation mouthpiece for a smoking article |
| US6367481 | 4 Feb 2000 | 9 Apr 2002 | Philip Morris Incorporated | Cigarette having reduced sidestream smoke |
| US6823873 | 21 Feb 2002 | 30 Nov 2004 | Philip Morris USA Inc. | Cigarette having reduced sidestream smoke |
| USRE32221 | 2 Oct 1984 | 12 Aug 1986 | | Variable dilution filter |
