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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7080649 | Cigarette holder A cigarett holder has a mouthpiece, a cotton filter, a main pipe, and a filter column. The mouthpiece has a distal periphery flange, a head portion, an inner tube having a through hole, and an enlarged hole communicating with the through hole. The main pipe has a fi... | 07/25/2006 |
| 6907885 | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highl... | 06/21/2005 |
| 6860273 | Cigarette with adsorbent at tip end thereof A zone or plug of porous adsorbent material, primarily activated carbon, is placed in the tobacco rod of a cigarette a short distance from the lighting end thereof. The amount of activated carbon is sufficient for effective removal of volatile smoke constituents whi... | 03/01/2005 |
| 6761174 | Cigarette and filter with downstream flavor addition A cigarette comprises a tobacco rod and a multi-component filter comprising a bed of adsorbent and a flavor-releasing filter segment located downstream of the bed of adsorbent. In the preferred embodiment, the adsorbent is also flavor-bearing and comprises high surf... | 07/13/2004 |
| 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 |
| 6431176 | Tobacco smoke containment apparatus and method therefor A tobacco smoke containment apparatus and method therefor having the characteristics of limiting the exhaust of harmful smoke particles as well as reducing the overall risk of accidental fire by containing a smoking tobacco product inside a closed recepta... | 08/13/2002 |
| 6345625 | Filter for secondary smoke and smoking articles incorporating the same Secondary smoke is harmful to passive smokers. A filter sleeve (1) comprises a sleeve (10) with a downstream portion (11) adapted for receiving inhale smoke into an inhalation flow path (13), an upstream portion (12) adapted for inhalation of said inhale ... | 02/12/2002 |
| 6318376 | Filter tip structure for cigarette A cigarette filter tip structure includes a cigarette holder, and a filter base mounted on the bottom of the cigarette holder. The cigarette holder includes a compartment defined therein and having a bottom formed with a shoulder, the compartment having a... | 11/20/2001 |
| 6158530 | Hand-held smoker's device for sidestream smoke control A cigarette combustion unit for the use in a hand-held cigarette smoke filtering device for filtering sidestream smoke emitted from a cigarette burning in the unit comprising: i) an elongate closed combustion chamber for a burning cigarette, a lower wall ... | 12/12/2000 |
| 6119699 | Method and apparatus for the selective removal of specific components from smoke condensates A smoking article capable of delivering a regulated smoke composition to a smoker, includes: a) a combustible filler wrapped in a combustible sheath; and b) at least one affinity chromatographic filter unit designed to preferentially remove specific targe... | 09/19/2000 |
| 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 |
| 6012459 | On-board lighter system for smoker's accessory A hand-held cigarette smoking device for capturing sidestream smoke with an on-board cigarette lighter. The device has a cigarette combustion chamber, a sidestream smoke filtration chamber, a plenum for conducting sidestream smoke from a lit cigarette in ... | 01/11/2000 |
| 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 |
| 5954061 | Cigarette aeration and filtration device A device comprising a filter and a rod which is capable of insertion into a cigarette cord that has a preformed conduit extending concentrically along the longitudinal axis of the cord. The rod having a plurality of perforations along its entire length, a... | 09/21/1999 |
| 5497791 | Smoker's accessory A smoker's accessory for filtering sidestream smoke emitted from a burning cigarette comprises an exhaust fan mounted in a central unit and a sidestream smoke filter cartridge having a cigarette tube for a burning cigarette, is placed is provided alongsid... | 03/12/1996 |
| 5088508 | Apparatus and method for eliminating cigarette sidestream smoke An apparatus for eliminating sidestream smoke from a cigarette or other smoking article includes a smoke collecting chamber adapted to collect sidestream smoke from the lit end of the smoking article along with air for combustion of the sidestream smoke a... | 02/18/1992 |
| 4730626 | Dry bowl smoker's pipe A smoker's pipe that includes a hollow shank, a bowl assembly mounted at one end of the shank and a bit connected to the other end of the shank. The pipe also comprises in one embodiment a flow separator which respectively directs the smoke and liquid com... | 03/15/1988 |
| 4646761 | Cigarette filter holder A disposable cigarette holder-filter includes a cigarette receiving socket end and a mouthpiece end. The interior of the holder includes a fibrous filtering material impregnated with water. The mouthpiece end of the holder is formed with an integrally for... | 03/03/1987 |
| 4579128 | Smoker's pipe A smoker's pipe comprises a bowl portion having a tobacco-receiving cavity below which is formed a transverse, tapering socket. A passageway interconnects the cavity with the socket. A tapering end portion of a stem part is a friction push-fit into the so... | 04/01/1986 |
| 4577645 | Reduced moisture smoker's pipe An improved smoker's pipe of the dry bowl type. The pipe is comprised of a hollow stem having a mouthpiece mounted at one end and a bowl assembly mounted at the other end. In one embodiment of the pipe the bowl assembly includes an outer bowl removably mo... | 03/25/1986 |
| 4517989 | Cigarette holder and filter cartridge An improved construction for a cigarette holder and filter cartridge is described wherein the holder has a unique arrangement of cavities for axially receiving a filter cartridge and the end of a cigarette. The filter cartridge is formed with a unique arr... | 05/21/1985 |
| 4370988 | Cigarette holder smoke filtering cartridge with two stage smoke purification action The outer shell of a removable smoke filtering cartridge for fitting inside a cigarette holder is formed from two coaxially abutting tubes separated by a wall with a hole. A tubular inner lip around the hole extends into the space within the first tube, a... | 02/01/1983 |
| 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 |
| 4210160 | Anti-pollution combustion device An anti-pollution combustion device has a bowl in the interior of which is located, above the connection between the bowl and stem, a perforated metal disc so that the tobacco rests on the same. The outside of the bowl is formed with circumferentially ext... | 07/01/1980 |
| 4202358 | Filter for cigarettes with two chambers The invention is directed to a filter for removing cigarette smoke particles. The filter is comprised of a housing having an inlet and an outlet. A first diaphragm is positioned adjacent the housing inlet and a second diaphragm is positioned midway along ... | 05/13/1980 |
