| Patents for A24D 3 - Tobacco smoke filters, e.g. filter-tips, filtering inserts; Mouthpieces for cigars or cigarettes (8,806) |
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| 05/08/1991 | CN2076324U Detoxicating cigarette filter-tip |
| 05/08/1991 | CN2076323U Composite cigarette filter-tip |
| 05/07/1991 | US5012829 Flavored cigarette filters, and methods and apparatus for making same |
| 05/07/1991 | US5012828 Tobacco smoke filter containing particulate additive |
| 05/07/1991 | CA1283833C Cooling apparatus for use in the manufacture of tobacco filters |
| 05/07/1991 | CA1283832C Manufacture of smoking articles with ventilated mouth pieces |
| 05/01/1991 | CN1012462B Smoking article |
| 04/24/1991 | CN2075438U Sawtooth filter tip |
| 04/24/1991 | CN2075437U Model 131 super filter tip |
| 04/23/1991 | US5009239 Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke |
| 04/17/1991 | CN1050674A Filter for smoking article containing flavored hollow fiber |
| 04/16/1991 | US5007439 Method of fabricating an all-tobacco cigarette controlling tar delivery and an all-tobacco cigarette |
| 04/03/1991 | EP0419733A2 Cigarette |
| 03/27/1991 | CA2024670A1 Particulate sorbent smoke filter |
| 03/05/1991 | CA1280946C Cigarette rods and filters containing strands provided from sheet-like materials |
| 02/27/1991 | EP0414437A2 A filter for a smoking article containing a flavored hollow fiber |
| 02/27/1991 | CN1049445A Preparation of gum based candy cigarette and application thereof |
| 02/20/1991 | EP0413536A1 Improvements relating to smoking articles |
| 02/20/1991 | CN2071435U Magnetized filtering type healthful cigarette holder |
| 02/16/1991 | CA2022967A1 Filter for a smoking article containing a flavored hollow fiber |
| 02/13/1991 | CN2070987U Cigarette filter tip |
| 02/12/1991 | US4991605 Container for additive materials for smoking articles |
| 02/06/1991 | CN1048988A Geometric charcoal filtering |
| 01/30/1991 | EP0410332A2 A liquid charging method and a liquid charging apparatus |
| 01/23/1991 | EP0409443A2 Control process and apparatus for the production of cigarette filters |
| 01/16/1991 | EP0408354A2 Cigarettes |
| 01/16/1991 | CN1048493A Tobacco filter stock |
| 01/16/1991 | CN1048492A Filter for smoke of tobacco |
| 01/15/1991 | CA2021199A1 Cigarettes |
| 01/15/1991 | CA1278907C Porous cellulose ester articles having striated surfaces |
| 12/27/1990 | CA1278158C2 Fibrillated filament with ion exchange resin sea component and non-ion exchange islands |
| 12/19/1990 | EP0402684A1 Device for perforating ventilation holes in cigarettes or similar |
| 12/19/1990 | CN2067483U Composite cigarette holder for filtering noxious gas |
| 12/19/1990 | CN1047876A Polyolefin fiber organic solvent adhesive |
| 12/19/1990 | CN1047796A Nonwoven fibrous web for tobacco filter |
| 12/19/1990 | CN1010861B Porous cellulose ester articles having striated surfaces |
| 12/12/1990 | EP0402060A2 Nonwoven fibrous web for tobacco filter |
| 12/11/1990 | CA1277480C Method and device for controlling hydrogen cyanide and nitric oxide concentration in cigarette smoke |
| 12/05/1990 | CN2066658U Polypropylene cellulosic screen moulding appliance for tobacco filter-tip |
| 11/28/1990 | CN2066377U Roller cutter |
| 11/27/1990 | US4972853 Cigarette filter rod elements and cigarettes incorporating such filter rod elements |
| 11/20/1990 | US4971078 Flavors, thermoplastic resin hollow fibers, filter plugs |
| 11/14/1990 | CN1046842A Component for absorbing nitrogen oxide from tobacco smoke, method for absorbing nitrogen oxide with component, filter for purification of tabacco smoke with component, and method for soaking filter |
| 11/14/1990 | CN1010370B Poison-reduction piece for cigarettes |
| 11/13/1990 | CA1276090C Filtered smoking articles |
| 11/08/1990 | DE3911470A1 Double-chamber mouthpiece for tobacco products |
| 11/06/1990 | CA1275886C Filtered smoking articles |
| 10/31/1990 | EP0395291A2 Container for additive materials for smoking articles |
| 10/31/1990 | CN2064580U Domestic hot-water warmer |
| 10/23/1990 | US4964426 Microacicular crystals on surfaces |
| 10/17/1990 | EP0392112A1 Cigarette and filter therefor |
| 10/09/1990 | US4961415 Controlled draft and efficiency filter element for smoking articles |
| 10/03/1990 | EP0390586A2 A tobacco filter stock |
| 10/03/1990 | CN2062952U Nonwoven cloth cigarette filter-tip |
| 09/12/1990 | CN1045220A Apparatus for manufacturing cigarette filter |
| 09/03/1990 | WO1990009741A1 Uniform tar delivery profile filter |
| 08/29/1990 | EP0383970A1 Apparatus for manufacturing cigarette filters |
| 08/22/1990 | EP0383018A2 Process for impregnating tobacco smoke filter fibres with polycarboxylic acid or salts thereof |
| 08/21/1990 | US4949736 Variable ventilation mouthpiece for a smoking article |
| 08/15/1990 | CN1044674A Adhesive for filter tip of cigarette |
| 08/08/1990 | CN2060035U Useless filter tip stick joining machine |
| 08/08/1990 | CN1044391A Smoking article with improved wrapper |
| 07/25/1990 | EP0378788A1 Coaxial filter cigarette |
| 07/25/1990 | CN1044037A Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke |
| 07/25/1990 | CN1008877B Filter tip for cigarette |
| 07/24/1990 | US4943272 Apparatus for manufacturing cigarette filter |
| 07/24/1990 | US4942887 Filter mouthpiece for a smoking article |
| 07/18/1990 | CN1043966A Cigarette polypropylene tows and making method |
| 07/18/1990 | CN1043871A Cigarettes filter with polypropylene fibre |
| 07/18/1990 | CN1043870A Polyolefin filter tow and method of making it |
| 07/17/1990 | US4941486 Cigarette having sidestream aroma |
| 07/12/1990 | DE3900266A1 Toxin remover, particularly for smokers |
| 07/03/1990 | US4938238 Smoking article with improved wrapper |
| 06/27/1990 | EP0374861A1 Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke |
| 06/26/1990 | US4936320 Apparatus for separating the leaders from next-following portions of filter rods and the like |
| 06/06/1990 | CN1008239B Tobacco rods and filters |
| 06/05/1990 | US4930526 Cigarette filter |
| 05/29/1990 | US4928713 Cigarette making machines |
| 05/16/1990 | EP0368065A1 Aerated filter cigarette |
| 05/16/1990 | CN1042054A Tobacco smoke filter containing particulate additive |
| 05/15/1990 | US4924888 Smoking article |
| 05/15/1990 | US4924887 Tobacco rods and filters |
| 05/15/1990 | US4924884 Method of and apparatus for making rod-shaped articles of the tobacco processing industry |
| 05/15/1990 | US4924883 Smoking article |
| 05/10/1990 | DE3904948C1 Coaxial filter for a smokeable article |
| 05/09/1990 | EP0366982A2 Selective delivery and retention of nicotine by-product from cigarette smoke |
| 05/09/1990 | CN1041871A Selective delivery and retention of nicotine by-product from cigarette smoke |
| 04/18/1990 | EP0364256A1 Cigarette filter rod elements and cigarettes incorporating such filter rod elements |
| 04/18/1990 | EP0364253A1 Cigarette filter rod elements and cigarettes incorporating such filter rod elements |
| 04/12/1990 | CA2000428A1 Cigarette filter rod elements and cigarettes incorporating such filter rod elements |
| 04/12/1990 | CA2000427A1 Cigarette filter rod elements and cigarettes incorporating such filter rod elements |
| 04/11/1990 | EP0363288A1 Tobacco smoke filters and process for production thereof |
| 04/11/1990 | CN1041096A Method of increasing hardness of cigarette filter elements |
| 04/05/1990 | WO1990003125A1 Tobacco smoke filters and process for production thereof |
| 04/04/1990 | EP0361903A1 Monitoring of tobacco smoke filter rods |
| 03/28/1990 | CN1040734A Improved pinned rollers and processes for manufacturing fibrillated films |
| 03/27/1990 | US4911684 Smoking article mouthpieces |
| 03/21/1990 | EP0359387A1 Polyolefin filter tow and method of making it |
| 03/14/1990 | EP0358334A1 Improved pinned rollers and process for manufacturing fibrillated films |
| 03/14/1990 | CN1007120B Aspiration device for smoking article |