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| Number | Title | Issue Date |
| 6626182 | Cigarette holder A cigarette holder for extracting tar has first tar extractor with a stick and a first disc with apertures. A second tar extractor has a cylinder fitted to the stick and a second disc provided on one end of the cylinder and fitted in a flue of transparent... | 09/30/2003 |
| 6591839 | Filter material for reducing harmful substances in tobacco smoke A filter material for reducing the content of harmful substances in tobacco smoke. The filter material comprises a ground and not additionally activated expanded clay produced without adding foreign substances, and zeolite as the filter material. The filt... | 07/15/2003 |
| 5179966 | Flavor generating article An article is provided in which a flavor generating medium is electrically heated to combustion to evolve inhalable flavors or other components in vapor and/or aerosol form. The article has a plurality of charges of the flavor generating medium which are ... | 01/19/1993 |
| 5083578 | Apparatus for removing toxic materials contained in tobacco and methods therefor An apparatus and method for removing toxic materials from tobacco which comprises a filter element which includes a seaweed. In use, the apparatus removes toxic materials from tobacco vapors which pass through the filter element.... | 01/28/1992 |
| 4770193 | Manufacture of tobacco smoke filters A smoke filter and a method for manufacturing the filter from a continuous multifilament filter tow are described in which a portion of the filter tow is treated with a dye to impart color to a discrete elongated zone of dye-treated filaments that is in s... | 09/13/1988 |
| 4557279 | Method and device for discouraging cigarette smoking A device for discouraging cigarette smoking is disclosed comprising a cigarette filter having a mouthpiece oppositely disposed from a cigarette holder with a passageway therebetween. A filter paper is treated to be invisibly pervious only within the confi... | 12/10/1985 |
| 4344444 | Cigarette holder with nicotine extractor A cigarette holder having an attractive appearance and a compact structure suitable for use by ladies without any feel of reluctance, and capable of effectively removing nicotine and tar while permitting a visual check of the state of removal of nicotine ... | 08/17/1982 |
| 4306576 | Cigarette filter A tar and nicotine filter device attachable to one end of a cigarette, including a molded, hard plastic tube for placing in a persons mouth, the tube containing two filter cartridges spaced apart by a tar trap therebetween, the invention in one design con... | 12/22/1981 |
| 4278099 | Smoking device An improved smoking device comprising a container of smoking material, positioned juxtaposed to a viewing chamber that enables the observation of the trails of entrapped smoke and the determination of the amount of smoke in the viewing chamber. The smoke ... | 07/14/1981 |
| 4204550 | Apparatus for fractionation of a standard puff of smoke from a smoking machine A holder for a flat circular filter attached to a smoking machine is provided with a rotatable support for the filter pad. The smoke inlet and suction outlet for the filter holder are offset from the center of the pad and holder and are in matching positi... | 05/27/1980 |
| 4188958 | Smoking pipe A smoking pipe having a means for removing tars, and other particles from the smoke by the principle of occlusion by water vapor. The water vapor is produced by heat released from burning tobacco. The pipe also has a transparent bypass located on the stem... | 02/19/1980 |
| 4071037 | Preparation and method of use of enzyme effective for conversion and detection of carbon monoxide An enzyme referred to as carbon monoxidase and referred to hereinafter as CMase is present in red blood cells and in various bacteria and plants, including algae and fungi. The enzyme is effective for the conversion of carbon monoxide in a gas stream. Whe... | 01/31/1978 |
| 4022223 | Smoking article Selected heavy metal compounds, particularly copper or nickel in the form of their salts, may be complexed with selected aliphatic or aromatic amines and deposited on a solid support or substrate to provide a material for the detection and/or removal of H... | 05/10/1977 |
| 4015610 | Cigarette filter tip A cigarette filter tip comprises three filter elements disposed end-to-end within a tubular outer coating of transparent sheet material. The two filter elements at the ends of the filter tip are of fibrous material while the central element is granular an... | 04/05/1977 |
