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| Number | Title | Issue Date |
| 7478637 | Continuous process for surface modification of cigarette filter materials Process and apparatus are provided for depositing target materials onto the surface of a moving substrate which may be used in the preparation of composites, cigarette filters, cigarette wrapper, bandages, biomedical applications, cosmetic and cleaning materials, an... | 01/20/2009 |
| 7240678 | Filtered cigarette incorporating an adsorbent material A filter element incorporating an adsorbent material is provided. The filter element may comprise a first section of filter material and a second section of filter material spaced apart to form a compartment therebetween. The compartment may be filled with one or mo... | 07/10/2007 |
| 7228861 | Cigarette filter A cigarette filter has filter sections including filter materials individually wrapped with plug wrap paper, forming paper for wrapping the filter sections integrally, and tipping paper covering the forming paper so as to connect the filter sections to a cigarette s... | 06/12/2007 |
| 7025067 | Activated charcoal filter for effectively reducing p-benzosemiquinone from the mainstream cigarette smoke A filter for tobacco smoke inhaling/generating/producing device, comprising stipulated amounts of specific grain sizes or combination of grain sizes of activated charcoal for effectively reducing from the mainstream smoke the level of p-benzosemiquinone (p-BSQ), a r... | 04/11/2006 |
| 6904918 | Low sidestream smoke cigarette with non-combustible treatment material A low sidestream smoke cigarette comprises a conventional tobacco rod and a non-combustible treatment material for the rod. The treatment material has a porosity less than about 200 Coresta units and a sidestream smoke treatment composition. The treatment compositio... | 06/14/2005 |
| 6863074 | Cigarette filters comprising unfunctionalized porous polyaromatic resins for removing gas phase constituents from mainstream tobacco smoke Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstrea... | 03/08/2005 |
| 6810884 | Low sidestream smoke cigarette with non-combustible treatment material A low sidestream smoke cigarette comprises a conventional tobacco rod and a non-combustible treatment material for the rod. The treatment material has a porosity less than about 200 Coresta units and a sidestream smoke treatment composition. The treatment compositio... | 11/02/2004 |
| 6796312 | Process and apparatus for the removal of toxic components of tobacco smoke and the standardization of the health hazards related to those components The oral cavity is a source of sensitive biomarkers that allow the development of novel tobacco filters to reverse and eliminate acute adverse effects of tobacco smoke. Useful biomarkers are ubiquitous functional leukocytes and associated essential biochemical mecha... | 09/28/2004 |
| 6371127 | Cigarette sidestream smoke and free-burn rate control device A device for minimizing cigarette sidestream smoke and reducing the free-burn rate of a burning cigarette, the device comprises: I) a non-combustible tubular element (12) encasing an effective length of a tobacco charge (22) of a cigarette (14) located in... | 04/16/2002 |
| 6080457 | Particulate sorbent smoke filter A smoke filter consists of substrate threads and/or strips each pre-coated with particulate sorbent (e.g. activated carbon granules), gathered together in solid or tubular rod form e.g. within a containing sleeve. When the gathered threads and/or strips f... | 06/27/2000 |
| 6067993 | Filter adapter for use with smoking apparatus A filter adapter for use with a waterpipe comprises a closure cap with a cutout; a spigot tap with a cylindrical sleeve, an integral port, a cylindrical base with male threads, the port providing communication between the sleeve and the base; and a ventil... | 05/30/2000 |
| 6006757 | Cigarette holder A cigarette holder completely encloses the lit end of a cigarette providing purification for both sidestream smoke and mainstream smoke. It has two concentric tubes with the lit cigarette placed in the inner tube and purifying agent placed in the volume b... | 12/28/1999 |
| 4316730 | Filter for the removal of apolar organic substances from gases Filter for the removal of apolar organic substances from gases containing an absorbent comprising at least one compound of the following formula: ##STR1## wherein one of X1, X2, and X3 is a phosphoric acid, phosphoric acid ester, or phosphatidyl moie... | 02/23/1982 |
| 4201232 | Cigarette holder with filter A cigarette holder and filter cartridge combination including interconnected mouthpiece and cigarette holding sections which define a filter cartridge chamber and a filter cartridge, comprising a core of mixed absorbent and non-absorbent fibers and a cyli... | 05/06/1980 |
| 4062368 | Tobacco-smoke filters According to the invention, a material for the filtration of tobacco smoke by reduction of vapor-phase constituents without adverse effect on the taste of the smoke comprises carbon particles of a size substantially within the range of 300 to 1700 micron,... | 12/13/1977 |
| 4038992 | Granular composition for tobacco filter A granular composition having a grain size of 10 to 50 mesh and a bulk density of 0.5 to 0.7 g/cm3 suitable for use in a tobacco filter or a tobacco pipe and having the ability to selectively remove carcinogenic and deleterious components from ... | 08/02/1977 |
| 4021382 | Method for the preparation of hydrophilic spongy gels A method for the preparation of a hydrophilic acrylonitrile-containing polymer comprising admixing a solution of said polymer in 47% to 75%, preferably 50 to 72% concentrated HNO3, with solid particles of a substance insoluble in said acid solu... | 05/03/1977 |
