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Class Information
Number: 131/336
Name: Tobacco > Smoke separator or treater > By adding constituent to smoke stream > Air
Description: Product or process wherein the constituent added is air.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7484511 |
Cigarette and filter with downstream flavor addition |
Feb. 3, 2009 |
| 7237558 |
Filtered cigarette incorporating an adsorbent material |
Jul. 3, 2007 |
| 6832613 |
Filter cigarette |
Dec. 21, 2004 |
| 6761174 |
Cigarette and filter with downstream flavor addition |
Jul. 13, 2004 |
| 6748956 |
Cigarette filter and cigarette |
Jun. 15, 2004 |
| 6576034 |
Method and apparatus for spinning a web of mixed fibers, and products produced therefrom |
Jun. 10, 2003 |
| 6502582 |
Thin cigarettes having filter elements with distinct relative retentions |
Jan. 7, 2003 |
| 6422244 |
Filter for a cigarette and filter cigarette |
Jul. 23, 2002 |
| 6371127 |
Cigarette sidestream smoke and free-burn rate control device |
Apr. 16, 2002 |
| 6206008 |
Make your own cigarettes |
Mar. 27, 2001 |
| 6206007 |
Cigarette with a dual-structure filter |
Mar. 27, 2001 |
| 6202650 |
Filter-tipped cigarette and filter for a cigarette |
Mar. 20, 2001 |
| 6089238 |
Ultralight coaxial cigarette including a multipart filter |
Jul. 18, 2000 |
| 6067995 |
Coaxial cigarette having cross stream barrier |
May. 30, 2000 |
| 6059706 |
Method of and apparatus for treating a filter tow |
May. 9, 2000 |
| 5979459 |
Ventilated filter cigarette with a coaxial filter element |
Nov. 9, 1999 |
| 5954061 |
Cigarette aeration and filtration device |
Sep. 21, 1999 |
| 5954060 |
Coaxial filter cigarette |
Sep. 21, 1999 |
| 5915388 |
Device for controlling free-burn rate of and reducing sidestream smoke from a cigarette and the like |
Jun. 29, 1999 |
| 5878753 |
Smoking article wrapper for controlling ignition proclivity of a smoking article without affecting smoking characteristics |
Mar. 9, 1999 |
| 5845648 |
Multi-compartment expandable filter for a smoking product |
Dec. 8, 1998 |
| 5758669 |
Tobacco filters and production process thereof |
Jun. 2, 1998 |
| 5746230 |
Concentric smoking filter having discrete tow and web filter media |
May. 5, 1998 |
| 5738120 |
Smoking articles |
Apr. 14, 1998 |
| 5730160 |
Segmented filter cigarette |
Mar. 24, 1998 |
| 5718250 |
Low gas phase filter for cigarettes |
Feb. 17, 1998 |
| 5713377 |
Tobacco cartridge |
Feb. 3, 1998 |
| 5709228 |
Cigarette with decreased sidestream smoke |
Jan. 20, 1998 |
| 5622190 |
Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core |
Apr. 22, 1997 |
| 5549125 |
Relating to smoking articles |
Aug. 27, 1996 |
| 5464028 |
Cigarette |
Nov. 7, 1995 |
| 5439011 |
Coaxial filter cigarette |
Aug. 8, 1995 |
| 5396910 |
Cigarette filter |
Mar. 14, 1995 |
| 5394895 |
Tipping paper and cigarette using the same |
Mar. 7, 1995 |
| 5392792 |
Reduced gas phase cigarette |
Feb. 28, 1995 |
| 5365951 |
Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core |
Nov. 22, 1994 |
| 5327916 |
Filter tip cagarette |
Jul. 12, 1994 |
| 5293883 |
Non-combustible anti-smoking device with nicotine impregnated mouthpiece |
Mar. 15, 1994 |
| 5271419 |
Cigarette |
Dec. 21, 1993 |
| 5261425 |
Cigarette |
Nov. 16, 1993 |
| 5203355 |
Cigarette with cellulosic substrate |
Apr. 20, 1993 |
| 5203757 |
Method and apparatus for producing tobacco smoke filter rods |
Apr. 20, 1993 |
| 5195543 |
Balanced flow tobacco smoke filter |
Mar. 23, 1993 |
| 5178166 |
Filter cigarette |
Jan. 12, 1993 |
| 5172708 |
Smoking articles |
Dec. 22, 1992 |
| 5168884 |
Smoking articles using novel paper wrapper |
Dec. 8, 1992 |
| 5159944 |
Cigarette |
Nov. 3, 1992 |
| 5150725 |
Filter tipped smoking rods |
Sep. 29, 1992 |
| 5141007 |
Cigarette |
Aug. 25, 1992 |
| 5133367 |
Container for additive materials for smoking articles |
Jul. 28, 1992 |
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