Claims
- 1. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod; the filter element including filter material having a plurality of longitudinal grooves therein and circumscribed by a carbon-containing paper material.
- 2. The cigarette of claim 1 wherein the paper includes more than about 20 weight percent carbonaceous material, based on the dry weight of the paper.
- 3. The cigarette of claim 1 wherein the paper includes more than about 30 weight percent carbonaceous material, based on the dry weight of the paper.
- 4. The cigarette of claim 1 wherein the carbonaceous material within the filter element is an amount of about 25 to about 75 mg.
- 5. The cigarette of claim 1, wherein the paper consists essentially of wood pulp and carbonaceous material.
- 6. The cigarette of claim 1, wherein the carbon-containing paper material is contoured so as to fit within said grooves.
- 7. The cigarette of claim 6, wherein a layer of carbon-containing paper is wrapped over the contoured paper material so as to form a longitudinal channel.
- 8. The cigarette of claim 1, wherein a noncarbon-containing plug wrap layer is wrapped over said carbon-containing paper material.
- 9. The cigarette of claim 7, wherein a noncarbon-containing plug wrap layer is wrapped over said second layer.
- 10. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod; the filter element including a carbon-containing paper material randomly gathered with a web of filter material different from said carbon-containing paper material and from said smokable material, thereby forming randomly oriented flow paths having carbon-containing paper therein.
- 11. The cigarette according to claim 10, wherein the carbon-containing paper includes approximately 50 weight percent carbonaceous material, based on the dry weight of the paper.
- 12. The cigarette according to claim 10, wherein the web of filter material is polypropylene.
- 13. The cigarette according to claim 10, wherein the web of filter material is polyester.
- 14. The cigarette according to claim 10, wherein the filter element includes a non-carbon-containing mouthpiece segment and a carbon-containing segment.
- 15. The cigarette according to claim 14, wherein the mouthpiece segment includes a plurality of ventilation holes arranged circumferentially around the outer periphery of the mouthpiece segment.
- 16. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod; the filter element including filter material circumscribed by a molecular sieve-containing paper material.
- 17. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod; the filter element including filter material having a plurality of longitudinal grooves therein and circumscribed by a molecular sieve-containing paper material.
- 18. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod, said filter element having a circumferential periphery; the filter element including filter material having a plurality of longitudinal grooves therein and located around said periphery and circumscribed by a carbon-containing paper material.
- 19. A cigarette having a charge of smokable material including tobacco cut filler wrapped in a circumscribing wrapping material to form a smokable rod; the cigarette comprising a filter element positioned adjacent one end of the smokable rod and having a cross-section; the filter element including a carbon-containing paper material randomly gathered with a web of filter material different from said carbon-containing paper material and from said smokable material, thereby forming randomly oriented flow paths disposed throughout the cross-section of the filter element and having carbon-containing paper therein.
CONTINUING APPLICATION INFORMATION
This application is a continuation-in-part of U.S. patent application Ser. No. 08/076,711 filed Jun. 11, 1993, now U.S. Pat. No. 5,404,890.
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
76711 |
Jun 1993 |
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