| Patents for A24D 3 - Tobacco smoke filters, e.g. filter-tips, filtering inserts; Mouthpieces for cigars or cigarettes (8,806) |
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| 04/07/1993 | EP0535695A2 Smoking article with carbon monoxide oxidation catalyst |
| 04/06/1993 | US5199447 Apparatus for high speed delivery of free flowing material |
| 04/04/1993 | CA2079495A1 Smoking article with co oxidation catalyst |
| 03/24/1993 | EP0316318B1 Fiber separator |
| 03/23/1993 | US5195543 Balanced flow tobacco smoke filter |
| 03/17/1993 | EP0532329A2 Cigarette |
| 03/17/1993 | EP0532159A1 Removal of nicotine from tobacco smoke |
| 03/10/1993 | EP0530251A1 Nonwoven filter and method of manufacture. |
| 03/09/1993 | US5191905 Filter cigarette having filter containing absorptive synthetic graft polymer fibers produced from irradiated polyethylene reacted with vapor phase styrene or absorptive synthetic magnetic fibers |
| 03/04/1993 | DE4127823A1 Comminuted cigarette filter waste - used as adsorbent for removing liq. and gaseous pollutants from water, air and soil |
| 03/03/1993 | CN2127561Y CIgarette with filter tip |
| 03/02/1993 | US5190061 Cigarette smoke filter |
| 02/24/1993 | EP0528186A1 Coaxial filter cigarette |
| 02/24/1993 | CN1069177A Cut tobacco and filter technology |
| 02/18/1993 | WO1993002575A1 Control of cigarette smoke chemistry |
| 02/16/1993 | US5186185 Flavoring granule for tobacco products and a preparation method thereof |
| 02/10/1993 | CN2126764Y Compound filter tip for cigarette |
| 01/19/1993 | US5179965 Apparatus for forming micro-holes on cylindrical objects |
| 01/12/1993 | US5178166 Filter cigarette |
| 01/05/1993 | US5176606 Laminated belt for filter rod making apparatus |
| 01/05/1993 | US5176154 Apparatus for alternately arranging the direction of an article |
| 12/23/1992 | CN2125252U Cigarette containing no toxic materials |
| 12/16/1992 | EP0517811A1 Tobacco smoke filter material and process for production thereof |
| 12/16/1992 | CN2124566U Many-time-use, portable, combined filtering toxin and bacterium cigarette holder |
| 12/10/1992 | DE4118815A1 Cigarette filter with improved particle retention - has centre section with axial hollow zone and perforated outer covering between centre section and cigarette |
| 12/09/1992 | CN1066767A Filtering material for carcinogen in tobacco smoke |
| 12/09/1992 | CN1019353B Vegetable propylene cigarette filter tip and making method |
| 12/02/1992 | CN1019264B Method and device for controlling hydrogen cyanide and nitric oxide concentration in cigarette smoke |
| 11/25/1992 | EP0514804A2 Improvements relating to smoking articles |
| 11/19/1992 | EP0514201A1 Separation process using organic acids and novel organic acids |
| 11/17/1992 | US5163452 Rod making apparatus for use in the manufacture of smoking articles |
| 11/10/1992 | US5161549 Retaining tar, nicotine and noxious gases in tobacco smoke filter by mixing in aqueous medium two organic acids, two organic acid salts, organic acid and salt, two polyhydric alcohols, or salt of organic acid and polyhydric alcohol |
| 10/27/1992 | US5158099 Wetted impact barrier for the reduction of tar and nicotine in cigarette smoke |
| 10/21/1992 | CN1018707B Filter for smoking article containing flavored hollow fiber |
| 10/14/1992 | EP0508837A1 Filter tip for tobacco smoke and other smoking materials |
| 10/14/1992 | CN2118409U Cigarette multi-layer wetted filting tip |
| 10/14/1992 | CN1065190A High efficiency filter tip of cigarette |
| 09/30/1992 | CN1064794A Primary fibrosis polypropylene cigarette filter tip and its manufacturing method |
| 09/29/1992 | US5150725 Filter tipped smoking rods |
| 09/29/1992 | US5150723 Cellulose acetate with surface crystals |
| 09/29/1992 | US5150722 Organoleptic |
| 09/29/1992 | US5150721 Tobacco smoke filter material and process for production thereof |
| 09/16/1992 | EP0503767A1 Flavor generating article |
| 09/16/1992 | CN1018235B Tobacco smoke filter containing particulate additive |
| 09/12/1992 | WO1992015209A1 Tip paper and cigarette using said tip paper |
| 09/09/1992 | CN2114976U Anti-cancer filter tip |
| 09/03/1992 | WO1992014371A1 Wetted impact barrier for cigarette smoke |
| 09/02/1992 | CN1018072B Cigarette polypropylene tows and making method |
| 08/26/1992 | EP0499974A2 Ventilated filter cigarette |
| 08/25/1992 | US5141006 Tobacco smoke filter material and process for production thereof |
| 08/19/1992 | EP0499402A1 Conversion of carbon monoxide using mixed transition metal oxide catalysts |
| 08/19/1992 | CN1063725A Smoke diacetate fiber recovery regenerating technology and equipment |
| 08/19/1992 | CN1063606A Cigarette filter |
| 08/18/1992 | US5139056 Liquid charging method |
| 08/16/1992 | CA2061066A1 Conversion of carbon monoxide using mixed transition metal oxide catalysts |
| 08/11/1992 | CA1306165C Rod making apparatus for smoking article manufacture |
| 08/11/1992 | CA1306164C Smoking article with improved mouthend piece |
| 08/05/1992 | CN2111653U Wasted filter-tip shaper |
| 07/29/1992 | CN1017590B Cigarette rods nd filters containing strands provides from sheet like materials |
| 07/28/1992 | US5133367 Container for additive materials for smoking articles |
| 07/15/1992 | CN1017399B Method of increasing hardness of cigarette filter elements |
| 07/07/1992 | CA1304648C Smoking article with improved wrapper |
| 07/01/1992 | EP0493026A2 Cigarette filter |
| 07/01/1992 | EP0491952A1 Article for smoking |
| 07/01/1992 | CN2108438U Mouthpiece for cigarette |
| 06/17/1992 | CN2107141U Filter-tip for filtering tobacco smoke |
| 06/16/1992 | US5121757 Tobacco treatment process |
| 06/03/1992 | CN1061540A Smoke filter containing particulate smoke modifying additiue |
| 05/27/1992 | CN1061331A Smoking article |
| 05/26/1992 | US5116298 Control process and apparatus for the production of cigarette filters |
| 05/26/1992 | US5115824 With polar groups on the surface; cigarettes, cigars, pipes; gravity packing |
| 05/26/1992 | US5115823 Flavor-enhancing smoking filter |
| 05/21/1992 | DE4137531A1 Cigarette smoke filter - comprises tube formed by at least one strip and coated with particle-form smoke-influencing additive |
| 05/20/1992 | CA2054839A1 Smoke filter containing particulate smoke modifying additive |
| 05/19/1992 | CA1301012C Tobacco rods and filters |
| 05/06/1992 | CN1060774A Cigarette filter rod, method and apparatus for producing same |
| 05/06/1992 | CN1016485B Filter for smoke of tobacco |
| 05/05/1992 | CA1299961C Rods containing pelletized material |
| 05/05/1992 | CA1299960C Method of fabricating an all-tobacco cigarette controlling tar delivery and an all-tobacco cigarette |
| 05/05/1992 | CA1299959C Cigarette filter rods and cigarettes incorporating such filter rods |
| 05/05/1992 | CA1299958C Coaxial cigarette |
| 05/05/1992 | CA1299957C Smoking article |
| 04/29/1992 | EP0482872A1 Smoking article |
| 04/29/1992 | EP0482634A1 Method of manufacturing cigarette tubes for cigarettes without filter |
| 04/29/1992 | EP0482568A1 Cigarette |
| 04/29/1992 | EP0482283A1 Cigarette filter rod, method and apparatus for producing the same |
| 04/28/1992 | US5107863 Cigarette and filter therefor |
| 04/22/1992 | EP0481596A1 Filter mouthpiece for smoking articles |
| 04/21/1992 | US5106357 Method and apparatus for producing tobacco smoke filter rods |
| 04/21/1992 | US5105839 Smoking articles |
| 04/21/1992 | US5105838 Cigarette |
| 04/21/1992 | US5105834 Cigarette and cigarette filter element therefor |
| 04/21/1992 | US5105833 Device for perforating ventilation holes in cigarettes or similar |
| 04/21/1992 | CA1299049C Apparatus and methods for making components of a smoking article |
| 04/21/1992 | CA1299047C Controlled draft and efficiency filter element for smoking articles |
| 04/16/1992 | WO1992005714A1 Filtration of tobacco smoke |
| 04/16/1992 | CA2092525A1 Filtration of tobacco smoke |
| 04/15/1992 | CN2101373U Cigarette press reducing tester with digit dispaly |
| 04/14/1992 | CA1298751C Ultra-high filtration filter |
| 04/08/1992 | CN2100739U Maifan stone cigarette filter |