| Patents for A24D 3 - Tobacco smoke filters, e.g. filter-tips, filtering inserts; Mouthpieces for cigars or cigarettes (8,806) |
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| 02/24/2000 | WO2000008958A1 Smoke-modifying agents and smoking material rods comprising smoke-modifying agents |
| 02/23/2000 | CN2364700Y Disposable wet cigarette mouthpiece |
| 02/22/2000 | US6026819 Fibrous cylindrical element |
| 02/16/2000 | CN2363491Y Filter tip for cigarette |
| 02/16/2000 | CN1049327C Industrial produced cigarette of non-automatic dieing out |
| 02/15/2000 | US6025572 Laser piercing apparatus for a web material |
| 02/14/2000 | CA2277131A1 Process for increasing the wet strength of porous plug wraps for use in smoking articles |
| 02/02/2000 | CN2361102Y Circulation double filter-tip of cigarette |
| 02/02/2000 | CN1242967A Improved cigarette and production method thereof |
| 01/26/2000 | CN2359905Y Smoke Cross dual-filtering filter tip |
| 01/25/2000 | CA2254895C Tobacco smoke filter for removing toxic compounds |
| 01/20/2000 | WO2000002647A1 Bio-catalytic filter |
| 01/19/2000 | EP0972456A1 Regulator for smoking flavor of tobacco |
| 01/19/2000 | CN2358698Y Harmless filter cigarette |
| 01/12/2000 | EP0970625A1 Regulator for smoking flavor of tobacco |
| 01/12/2000 | EP0861036B1 Method for the manufacture of biodegradable filter material |
| 01/12/2000 | CN2357518Y Tobacco smoke filter-tip |
| 01/06/2000 | WO2000000048A1 Tobacco smoke filter |
| 01/06/2000 | WO2000000047A1 Low delivery cigarette and filter |
| 01/05/2000 | CN2356504Y Combined filtering medium filter-tip for cigarette |
| 12/29/1999 | CN2355551Y Cigarette with built-in health filter |
| 12/28/1999 | CA2115618C Smoking article |
| 12/24/1999 | CA2273323A1 Filter |
| 12/23/1999 | WO1999065343A1 Smokers' article |
| 12/23/1999 | WO1998057556A8 Smoking article and smoking material therefor |
| 12/22/1999 | CN2354393Y Cigarette with filtering tip having holes |
| 12/21/1999 | CA2144999C Selective filtration device |
| 12/14/1999 | CA2151471C Biodegradable tobacco smoke filters |
| 12/08/1999 | CN2351977Y Cigarette mouthpiece for smoke filtering with anti-drug function |
| 12/07/1999 | US5998500 Method of making a filter with interpenetrating polymer network that biodegrades |
| 12/07/1999 | US5996587 Smoking articles |
| 12/02/1999 | DE19822775A1 Verfahren zur Herstellung gehärteter Filterstäbe in der Zigarettenindustrie A process for the preparation of cured filter rods in the cigarette industry |
| 12/01/1999 | EP0782400B1 Selective filtration device |
| 11/25/1999 | WO1999059436A1 Method for producing hardened filter rods in the cigarette industry |
| 11/24/1999 | CN1236307A Regulator for smoking flavor of tobacco |
| 11/24/1999 | CN1236306A Regulator for smoking flavor of tobacco |
| 11/18/1999 | WO1999058764A1 Cigarette filter roll paper, cigarette filter, and filter cigarette |
| 11/16/1999 | US5984851 Grading device, used in manufacture of filter plugs for cigarettes |
| 11/09/1999 | US5979460 Creeping, embossing cellulose ester sheet |
| 11/09/1999 | US5979459 Ventilated filter cigarette with a coaxial filter element |
| 11/03/1999 | EP0877564B1 Smoking articles |
| 11/03/1999 | CN2346217Y Purifying health cigarette |
| 11/03/1999 | CN2346216Y Filter tip |
| 11/03/1999 | CN1233436A Liquid odour type cigarette |
| 11/02/1999 | US5975086 Cigarette filter containing dry water and microcapsules |
| 10/27/1999 | CN1233158A Cigarette sidestream smoke and free-burn rate control device |
| 10/26/1999 | US5970988 Cigarette filters; cellulose acetate, anatase titanium dioxide, and metal salt |
| 10/20/1999 | EP0949873A1 Smokeless method and article utilizing catalytic heat source for controlling products of combustion |
| 10/20/1999 | EP0758853B1 Cigarette filter materials |
| 10/20/1999 | CN2343809Y Three-stage filter-tip |
| 10/19/1999 | US5967149 Slurry containing a particulate or fibrous cellulose ester and a wood pulp |
| 10/13/1999 | EP0777425B1 Concentric core filter |
| 10/13/1999 | CN2342609Y Magnetizing filter-tip for cigarette |
| 10/12/1999 | CA2114128C Control of cigarette smoke chemistry |
| 10/07/1999 | WO1999050305A1 Molded article of biodegradable cellulose acetate and filter plug for article to be smoked |
| 09/29/1999 | EP0944337A1 Cigarette sidestream smoke and free-burn rate control device |
| 09/29/1999 | CN1229616A Filter for secondary smoke and smoking articles incorporating the same |
| 09/28/1999 | US5958327 Extruded, water soluble polysaccharide for tobacco smoke filtration |
| 09/23/1999 | WO1999048342A1 Method and load calculator to calculate the temperature distribution of an anode of an x-ray tube |
| 09/22/1999 | CN2338994Y Safety cigarette filter tip |
| 09/22/1999 | CN2338993Y High-precision filtering cigarette |
| 09/22/1999 | CN1228946A Method and device for manufacturing filter tip bar of bar product in tobacco processing industry |
| 09/21/1999 | US5954061 Cigarette aeration and filtration device |
| 09/21/1999 | US5954060 Coaxial filter cigarette |
| 09/21/1999 | US5954059 Tobacco smoke |
| 09/21/1999 | CA2186585C Improvements relating to tobacco smoke filtration material |
| 09/16/1999 | DE19811014A1 Verfahren und Vorrichtung zum Herstellen von Filterstäben für stabförmige Artikel der tabakverarbeitenden Industrie Method and apparatus for producing filter rods for rod-shaped articles of the tobacco-processing industry |
| 09/15/1999 | EP0941673A1 Method and apparatus for the manufacturing of rod filter for rod-shaped article in the tobacco industry |
| 09/08/1999 | CN1227733A Device and method for treating filtering short flax strips |
| 09/07/1999 | US5947127 Tobacco filters and method of producing the same |
| 09/07/1999 | US5947126 Environmentally disintegratable tobacco smoke filter rod |
| 09/02/1999 | WO1999043223A1 Filter insert for filter cigarettes |
| 09/01/1999 | CN2335386Y Cigarette filter-tip |
| 08/31/1999 | US5944026 Flavored cigarette |
| 08/31/1999 | US5944025 Cigarette |
| 08/26/1999 | WO1999042006A1 Sheath-core bicomponent fibers and tobacco smoke filters and cigarettes made therefrom |
| 08/26/1999 | WO1999009250A9 Sheet material and process for producing the same |
| 08/25/1999 | CN1044774C Recycling cellulose esters from waste from cigarette production |
| 08/19/1999 | WO1999033365B1 Use of polyphenol compounds or their derivatives as scavengers of free radicals in cigarette filters |
| 08/18/1999 | CN2333207Y Cigarette with combined filter medium filter-tip |
| 08/12/1999 | WO1999026496A3 Biodegradable filter for cigarettes |
| 07/28/1999 | EP0615411B1 Electrical smoking system for delivering flavors and method for making same |
| 07/28/1999 | CN2330188Y Aqueous mouthpiece cigarette |
| 07/28/1999 | CN1224039A Adhesive for filter tip and method for producing same |
| 07/27/1999 | US5927287 Tobacco filter material and a tobacco filter as produced using the same |
| 07/21/1999 | EP0930024A1 Filtering element to be embodied in the unsmokable section of the cigarette |
| 07/21/1999 | EP0797390A4 Removal of undesirables in liquid or gas |
| 07/21/1999 | EP0599897B1 Control of cigarette smoke chemistry |
| 07/21/1999 | CN2329189Y Tar filtering cigarette mouthpiece |
| 07/21/1999 | CN2329188Y Low-toxic filter-tip cigarette |
| 07/21/1999 | CN1223287A Propene fibre filter stick formation solid binder for cigarette and making, using process |
| 07/14/1999 | CN1222323A Production of fliter tip for cigarette |
| 07/13/1999 | US5921248 Impregnating filter with ascorbic acid |
| 07/08/1999 | WO1999033365A1 Use of polyphenol compounds or their derivatives as scavengers of free radicals in cigarette filters |
| 07/08/1999 | WO1999033364A1 Coaxial cigarette with cross-flow stopper |
| 07/07/1999 | CN1222058A Tobacco smoke filter for removing toxic compounds |
| 07/01/1999 | WO1999032002A1 A method and apparatus for the selective removal of specific components from smoke condensates |
| 06/30/1999 | EP0925728A1 Coaxial cigarette with cross-flow barrier |
| 06/30/1999 | CN2326007Y Magnetized health-care strong-filtering cigarette holder |
| 06/30/1999 | CN1220852A Method for producing filter tip |