US3902504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engineered cigarette
Assignee: ECYSTA Corp A CORP OF DE
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Filing: 1973-09-26
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Granted: 1975-09-02
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Expires: 1993-09-26
Abstract
Abstract An improved cigarette is provided in which the tobacco column is modified by incorporating a tobacco substitute such as shredded carbon filled paper with the tobacco in increasing amounts toward the butt end of the cigarette. The shredded carbon filled paper may be mixed with the tobacco in preselected zones or segments along the length of the cigarette with the zones closest to the mouthpiece containing increasing amounts or the cigarette may be constructed such that the shredded carbon filled paper is blended with the tobacco in gradually increasing amounts toward the mouthpiece along the whole length of the tobacco column. Cigarettes made according to this invention display a more level yield of constituents in the smoke from tip end to butt end when measured on a puff by puff basis during smoking while also reducing the overall yield of constituents in the smoke from the entire cigarette.
Inventors
- 👤 Jr William F Owens
- 👤 Stuart W Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:35
CPC Classifications
A; A24; A24D; A24D1/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
192 words
A cigarette comprising a series of at least three segments each constituting at least ten percent of the length of the cigarette, each segment containing a smoking charge individually wrapped in cigarette paper with the segments arranged in a column held in place by an outer wrap of cigarette paper, said smoking charge in said segments near the mouthpiece end of the cigarette comprising different blends of tobacco and a tobacco substitute, said tobacco and tobacco substitute uniformly blended in each segment, all of said segments arranged so that those containing the highest percentage of tobacco substitute are disposed towards the mouthpiece end of the cigarette and those containing none or lesser percentages of tobacco substitute disposed towards the tip end of the cigarette, such that the concentration of tobacco substitute is greatest at the mouthpiece end and progressively decreases in concentration from segment to segment towards the tip end whereby, as the cigarette is consumed during smoking, the yield of the constituents in the smoke tends to be more level from tip end to mouthpiece end when compared with a conventional cigarette having a uniform smoking charge along its entire length.
Claim 2
Dependent Claim
192 words
A cigarette comprising a series of at least three segments each constituting at least ten percent of the length of the cigarette, each segment containing a smoking charge individually wrapped in cigarette paper with the segments arranged in a column held in place by an outer wrap of cigarette paper, said smoking charge in said segments near the mouthpiece end of the cigarette comprising different blends of tobacco and a tobacco substitute, said tobacco and tobacco substitute uniformly blended in each segment, all of said segments arranged so that those containing the highest percentage of tobacco substitute are disposed towards the mouthpiece end of the cigarette and those containing none or lesser percentages of tobacco substitute disposed towards the tip end of the cigarette, such that the concentration of tobacco substitute is greatest at the mouthpiece end and progressively decreases in concentration from segment to segment towards the tip end whereby, as the cigarette is consumed during smoking, the yield of the constituents in the smoke tends to be more level from tip end to mouthpiece end when compared with a conventional cigarette having a uniform smoking charge along its entire length.
Claim 3
Dependent Claim
25 words
A cigarette according to claim 1 in which the tobacco substitute is a shredded carbon filled paper made from cellulose fiber and finely pulverized carbon.
Claim 4
Dependent Claim
28 words
A cigarette according to claim 2 in which the carbon filled paper contains from 55% to 400% carbon by weight based on the weight of the cellulose fiber.
Claim 5
Dependent Claim
21 words
A cigarette according to claim 1 in which the segment closest to the mouthpiece end is longer than the other segments.
References Cited (Backward Citations)
US3759267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |