Patent US4595024A successfully refreshed from Google Patents.
US4595024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented cigarette
Assignee: RJ Reynolds Tobacco Co
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Filing: 1984-08-31
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Granted: 1986-06-17
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Expires: 2004-08-31
Abstract
Abstract A cigarette, having a tobacco rod consisting of at least two segments. The segment toward the filter end of the tobacco rod has a density at least 20% greater than the fire-end segment. The density differential may be combined with a nicotine differential, such that the fire-end segment has a higher nicotine content than does the filter-end segment. This configuration alters the nicotine delivery of the invention, providing a nicotine delivery either uniform during the last half of the cigarette or at levels reduced from those seen during the first few puffs.
Inventors
- 👤 Tammie B. Greene
- 👤 David E. Townsend
- 👤 Thomas A. Perfetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:26
CPC Classifications
A; A24; A24D; A24D1/00; A24D1/04; A24D1/045; A24D3/00; A24D3/02
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
97 words
A smoking article having a smokeable charge including fire end and an unlit end, comprising: a first segment, disposed at the fire end of the smoking article having a substantially uniform density radially and longitudinally from the segment axis; and a second segment having a substantially uniform density radially and longitudinally from the segment axis disposed at the unlit end of the cigarette and extending at least 30% of the total length of the smokable portion of the smoking article, said second segment having a density at least 20% greater than the density of said first segment.
Claim 2
Dependent Claim
97 words
A smoking article having a smokeable charge including fire end and an unlit end, comprising: a first segment, disposed at the fire end of the smoking article having a substantially uniform density radially and longitudinally from the segment axis; and a second segment having a substantially uniform density radially and longitudinally from the segment axis disposed at the unlit end of the cigarette and extending at least 30% of the total length of the smokable portion of the smoking article, said second segment having a density at least 20% greater than the density of said first segment.
Claim 3
Dependent Claim
21 words
The smoking article of claim 1, wherein said second segment has a density at least 30% greater than said first segment.
Claim 4
Dependent Claim
21 words
The smoking article of claim 1, wherein said second segment has a density at least 50% greater than said first segment.
Claim 5
Dependent Claim
24 words
The smoking article of claims 1, 2, or 3, wherein said first segment and said second segment are composed of the same tobacco blend.
Claim 6
Dependent Claim
23 words
The smoking article of claims 1, 2, or 3, wherein said first segment and said second segment are composed of different tobacco blends.
Claim 7
Dependent Claim
19 words
The smoking article of claim 5, wherein said first segment and said second segment are approximately the same length.
Claim 8
Dependent Claim
22 words
The smoking article of claim 5, wherein said second segment extends approximately 60% the length of the smokable portion of the cigarette.
Claim 9
Dependent Claim
21 words
The smoking article of claims 1, 2, or 3, wherein at least one of said segments includes a tobacco substitute material.
Claim 10
Dependent Claim
30 words
The smoking article of claim 1 wherein said substantially uniform longitudinal and radial densities of each of said first segment and said second segment occur beyond each dense end region.
Claim 11
Dependent Claim
26 words
The smoking article of claim 9 wherein said first segment extends at least 30% of the total length of the smokable portion of the smoking article.
Claim 12
Dependent Claim
13 words
The smoking article of claim 1 wherein said smoking article is a cigarette.
Claim 13
Dependent Claim
100 words
A smoking article having a smokeable charge including fire end and an unlit end, comprising: a first segment having a substantially uniform density radially from and longitudinally along the segment axis, disposed at the fire end of the smoking article; and a second segment disposed at the unlit end of the smoking article, said second segment extending at least 30% of the total length of the smokable portion of the article, said second segment having a density at least 20% greater than said first segment, and said first segment having a nicotine content higher than that of said second segment.
Claim 14
Dependent Claim
100 words
A smoking article having a smokeable charge including fire end and an unlit end, comprising: a first segment having a substantially uniform density radially from and longitudinally along the segment axis, disposed at the fire end of the smoking article; and a second segment disposed at the unlit end of the smoking article, said second segment extending at least 30% of the total length of the smokable portion of the article, said second segment having a density at least 20% greater than said first segment, and said first segment having a nicotine content higher than that of said second segment.
Claim 15
Dependent Claim
21 words
The smoking article of claim 12, wherein said second segment has a density at least 30% greater than said first segment.
Claim 16
Dependent Claim
21 words
The smoking article of claim 12, wherein said second segment has a density at least 50% greater than said first segment.
Claim 17
Dependent Claim
24 words
The smoking article of claims 12, 13, or 14, wherein said first segment and said second segment are composed of the same tobacco blend.
Claim 18
Dependent Claim
23 words
The smoking article of claims 12, 13, or 14, wherein said first segment and said second segment are composed of different tobacco blends.
Claim 19
Dependent Claim
19 words
The smoking article of claim 16, wherein said first segment and said second segment are approximately the same length.
Claim 20
Dependent Claim
22 words
The smoking article of claim 16, wherein said second segment extends approximately 60% the length of the smokable portion of the cigarette.
Claim 21
Dependent Claim
21 words
The smoking article of claims 13, 14, or 15, wherein at least one of said segments includes a tobacco substitute material.
Claim 22
Dependent Claim
13 words
The smoking article of claim 12 wherein said smoking article is a cigarette.
Claim 23
Dependent Claim
31 words
The smoking article of claim 20 wherein said unlit end is a filter end and said second segment axis is between said first segment and the filter end of the cigarette.
Claim 24
Dependent Claim
30 words
The smoking article of claim 12 wherein said substantially uniform longitudinal and radial densities of each of said first segment and said second segment occur beyond each dense end region.
Claim 25
Dependent Claim
26 words
The smoking article of claim 22 wherein said first segment extends at least 30% of the total length of the smokable portion of the smoking article.
Claim 26
Dependent Claim
47 words
The smoking article of claim 21 wherein said substantially uniform density of each of said first segment and said second segment occurs beyond each dense end region, and said first segment extends at least 30% of the total length of the smokable portion of the smoking article.
Claim 27
Independent Claim
80 words
A method for producing a smoking article, said method comprising the steps of: selecting a first tobacco segment; selecting a second tobacco segment having a density at least 20% greater than said first segment; forming a tobacco rod from said first and second segments, said first segment occupying at least 30% of the length of said tobacco rod and positioned at the fire end of said tocacco rod; and said second segment positioned at the unlit end of the cigarette.
Claim 28
Independent Claim
80 words
A method for producing a smoking article, said method comprising the steps of: selecting a first tobacco segment; selecting a second tobacco segment having a density at least 20% greater than said first segment; forming a tobacco rod from said first and second segments, said first segment occupying at least 30% of the length of said tobacco rod and positioned at the fire end of said tocacco rod; and said second segment positioned at the unlit end of the cigarette.
Claim 29
Dependent Claim
21 words
The method of claim 25, wherein said second tobacco segment has a density at least 30% greater than said first segment.
Claim 30
Dependent Claim
31 words
The smoking article of claim 26 wherein said unlit end is a filter end and said second segment axis is between said first segment and the filter end of the cigarette.
Claim 31
Dependent Claim
47 words
The smoking article of claim 27 wherein said substantially uniform density of each of said first segment and said second segment occurs beyond each dense end region, and said first segment extends at least 30% of the total length of the smokable portion of the smoking article.
Claim 32
Dependent Claim
12 words
The method of claim 25 wherein said smoking article is a cigarette.
Claim 33
Dependent Claim
22 words
The method of claim 29 wherein said second segment is positioned between said first segment and the filter end of said cigarette.
Claim 34
Dependent Claim
20 words
The method of claim 29 wherein said second segment occupies at least 30% of the length of said tobacco rod.
References Cited (Backward Citations)
US1796522A
Cited
US1920708A
Cited
US3604429A
Cited
US3664350A
Cited
US3759267A
Cited
US3773053A
Cited
US3916914A
Cited
US3902504A
Cited
US4009722A
Cited
US4328817A
Cited
US4434804A
Cited
US4516585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |