|
| US4019520 | 25 Nov 1974 | 26 Apr 1977 | Brown & Williamson Tobacco Corporation | Tobacco substitute containing boric oxide, boron oxyacids, and ammonium, alkali metal, or alkaline earth metal salts of boron oxyacids |
| US4193412 | 20 Dec 1977 | 18 Mar 1980 | Rhodia AG | Additive for smoking tobacco products, filter elements thereof and process for the preparation thereof |
| US4312367 | 8 May 1980 | 26 Jan 1982 | Philip Morris Incorporated | Smoking compositions |
| US4452259 | 10 Jul 1981 | 5 Jun 1984 | Loews Theatres, Inc. | Smoking articles having a reduced free burn time |
| US4505282 | 10 May 1983 | 19 Mar 1985 | American Brands, Inc. | Innerliner wrap for smoking articles |
| US4715388 | 20 Jun 1985 | 29 Dec 1987 | Philip Morris Incorporated | Cigarettes having minimized loose ends and a process for preparing same |
| US4936920 | 9 Mar 1988 | 26 Jun 1990 | Philip Morris Incorporated | High void volume/enhanced firmness tobacco rod and method of processing tobacco |
| US5060663 | 7 Dec 1987 | 29 Oct 1991 | Philip Morris Incorporated | Process for minimizing loose ends in cigarettes |
