Class / Patent application number | Description | Number of patent applications / Date published |
131339000 | Interior surface causes particular flow characteristic | 9 |
20080216853 | Smoking article with open ended filter and restrictor - A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end and a downstream end, wherein the filter is arranged to receive mainstream smoke at the upstream end. The filter includes a tubular segment open at the downstream end thereof and a flow restrictor contained within the tubular segment. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location between the upstream end and the downstream end of the filter. | 09-11-2008 |
20090084392 | Smoking article - A smoking article in which a patch of web material such as paper containing an adsorbent material therein, such as activated carbon, is positioned towards the mouth end of the smoking article to achieve a flatter puff profile compared to a conventional cigarette by decreasing the smoke constituents in the final few puffs. Characteristics of the smoking articles may be changed to increase the delivery of smoke constituents in the first few puffs in order to maintain a constant ISO NFDPM yield. The adsorbent-containing paper extends over only a portion of the smoking article towards the mouth end and does not comprise a flavourant therein. | 04-02-2009 |
20090272392 | Cigarette filter capable of removing harmful substance - [PROBLEMS] To provide a cigarette filter that does not impair the distinctive flavor of a cigarette and the air permeability of filter while smoking, and at the same time, can more effectively remove harmful substances such as a pyrene that is generated from the cigarette. | 11-05-2009 |
20090288671 | Smoking Article Filter - A filter element having a longitudinally extending core and a wrapper ( | 11-26-2009 |
20100108085 | Smoking Article Filter - A filter for a smoking article comprising first and second sections, the first section being at the mouth end of the filter and comprising a cylindrical element circumscribed by a wrapper and having a hollow portion extending therethrough, and the second section being longitudinally aligned with and adjacent to the first section and comprising a filtration material. The second section comprises a particulate material in a circumferential region and extending to the end of the second section immediately adjacent the first section. Also provided is a smoking article incorporating a filter according to the invention. | 05-06-2010 |
20140137881 | FILTER FOR A SMOKING ARTICLE - A filter for a smoking article comprises a monolith. The monolith is produced forming particles of a partially cured resin into a dough, shaping the dough to produce a monolith, sintering the particles, carbonizing and activating the sintered monolith, and incorporating the monolith into a smoking article filter. | 05-22-2014 |
131340000 | By use of specific filter mass | 3 |
20090014020 | Smoking article with valve - A smoking article having a cylinder of smoking material, a hollow tube within the cylinder of smoking material, and a filter attached to the cylinder of smoking material. The filter includes an upstream segment containing an aerosol former, a downstream segment containing a sorbent material, and a valve positioned between the upstream segment and the downstream segment. The valve has a first position in which the valve is closed and a second position in which the valve is open and allows the passage of smoke through the filter. | 01-15-2009 |
20090050168 | Cigarette filter - Cigarette filter with an outer housing, an inner smoke channel member, the outer housing being approximately cylindrical in shape, the outer housing having an aperture on its first end that is equivalent to the diameter of a standard cigarette, the outer housing having an aperture on the second end that is approximately one tenth of an inch in diameter, the second end also being flattened so that the end view of the second end is approximately rectangular, the interior of the outer housing capable of frictionally retaining the inner smoke channel member, the inner smoke channel member including a quarter of an inch diameter disk that is frictionally retained by the inner diameter of the outer housing, the disk including six evenly spaced radially placed apertures, the smoke channel member disk apertures being approximately three thousandths of an inch in diameter. | 02-26-2009 |
20110100388 | SMOKING ARTICLE WITH A RESTRICTOR - A smoking article filter includes a flow restrictor and a cavity downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location downstream of the restrictor. | 05-05-2011 |