|
| US3943832 | 13 mars 1974 | 16 mars 1976 | Brown & Williamson Tobacco Corporation | Method and apparatus for the handling of tow in the manufacture of tobacco smoke filters containing particulate material |
| US3957563 | 15 mai 1975 | 18 mai 1976 | Brown & Williamson Tobacco Corporation | Method and apparatus for the manufacture of filter rods containing particulate material by a split rod technique |
| US4184412 | 20 mars 1978 | 22 janv. 1980 | Liggett Group Inc. | Pocket-type charcoal filter and cigarette made therewith |
| US4214508 | 13 oct. 1977 | 29 juil. 1980 | Philip Morris Incorporated | Method and apparatus for making cigarette filters of filamentary material |
| US4285677 | 7 sept. 1979 | 25 août 1981 | Daicel Ltd. | Method and apparatus for the manufacture of cigarette filters containing particulate material |
| US4862905 | 15 juin 1987 | 5 sept. 1989 | R. J. Reynolds Tobacco Company | Rods containing pelletized material |
| US5322495 | 22 mars 1993 | 21 juin 1994 | Philip Morris Incorporated | High speed vacuum assisted free flowing material inserter in filter rod manufacture |
| US5339871 | 4 mai 1993 | 23 août 1994 | Philip Morris Incorporated | Apparatus and methods for transferring and metering granular material |
| US5542901 | 22 mars 1994 | 6 août 1996 | Philip Morris Incorporated | Vacuum arrangement on combiner |
| US5875824 | 6 août 1996 | 2 mars 1999 | | Method and apparatus for high speed delivery of particulate material |
| US6443160 | 10 déc. 1999 | 3 sept. 2002 | G.D. S.p.A. | Method and device for forming a cigarette rod containing an additive material |
| US6656412 | 17 août 2001 | 2 déc. 2003 | Philip Morris Incorporated | Compaction system for particles in particle filled cavities of an article |
| US6723033 | 2 mars 2000 | 20 avr. 2004 | Philip Morris Incorporated | Method and apparatus for producing particle bearing filter rod |
| US7381175 | 22 déc. 2004 | 3 juin 2008 | Philip Morris USA Inc. | Compound filter rod making apparatus and process |
| US7479098 | 23 sept. 2005 | 20 janv. 2009 | R. J. Reynolds Tobacco Company | Equipment for insertion of objects into smoking articles |
| US7547271 | 10 juil. 2006 | 16 juin 2009 | Japan Tobacco Inc. | Filter rod making machine |
| US7654945 | 4 août 2006 | 2 févr. 2010 | R.J. Reynolds Tobacco Company | Method and apparatus for incorporating objects into cigarette filters |
| US7833146 | 23 déc. 2009 | 16 nov. 2010 | R.J. Reynolds Tobacco Company | Method and apparatus for incorporating objects into cigarette filters |
| US8083658 | 5 déc. 2005 | 27 déc. 2011 | Filtrona International Limited | Tobacco smoke filter production |
| US8142339 | 19 oct. 2010 | 27 mars 2012 | R.J. Reynolds Tabacco Company | Method and apparatus for incorporating objects into cigarette filters |