US4505282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Innerliner wrap for smoking articles
Assignee: Brown and Williamson Holdings Inc
•
Filing: 1983-05-10
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Granted: 1985-03-19
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Expires: 2003-05-10
Abstract
Abstract This invention relates to an innerliner wrap for a tobacco smoking article comprising a combustible porous sheet of cellulosic fibers and finely pulverized porous carbon particles coated with calcium citrate, and a smoking article comprising a tobacco filler, an innerliner wrap encasing said filler, and an outer wrap over said innerliner wrap, said innerliner wrap comprising a combustible porous sheet of cellulosic fibers and finely pulverized porous carbon particles coated with calcium citrate.
Inventors
- 👤 Everett C. Cogbill
- 👤 Robert S. Sprinkle, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:41
CPC Classifications
A; A24; A24D; A24D1/00; A24D1/02; D; D21; D21H; D21H5/00; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
An innerliner wrap for a tobacco smoking article comprising a combustible porous paper sheet of cellulosic fibers and finely pulverized activated carbon particles combined intimately with a precipitate of calcium citrate, said carbon particles having a porous surface whereby said calcium citrate is located into and onto said carbon particles to coat both the inner and outer surface.
Claim 2
Dependent Claim
58 words
An innerliner wrap for a tobacco smoking article comprising a combustible porous paper sheet of cellulosic fibers and finely pulverized activated carbon particles combined intimately with a precipitate of calcium citrate, said carbon particles having a porous surface whereby said calcium citrate is located into and onto said carbon particles to coat both the inner and outer surface.
Claim 3
Dependent Claim
20 words
The innerliner wrap of claim 1 wherein the coated carbon particles comprises at least 5% by weight of the wrap.
Claim 4
Dependent Claim
16 words
The innerliner wrap of claim 1 including St. John's Bread in an amount sufficient to flavor.
Claim 5
Dependent Claim
38 words
The innerliner wrap of claim 1 including St. John's Bread in an amount of about 2% by weight of the wrap and wherein the coated carbon particles comprises from about 5 to 80% by weight of the wrap.
Claim 6
Dependent Claim
28 words
The innerliner wrap of claim 1 wherein for every part by weight of carbon particles there is from about 0.6 to 1 part by weight of calcium citrate.
Claim 7
Dependent Claim
74 words
A smoking article comprising a tobacco filler, an innerliner wrap encasing said filler, and an outer wrap over said innerliner wrap, said innerliner wrap comprising a combustible porous paper sheet of cellulosic fibers and finely pulverized activated carbon particles combined intimately with a precipitate of calcium citrate, said carbon particles having a porous surface whereby said calcium citrate is located into and onto said carbon particles to coat both the inner and outer surfaces.
Claim 8
Dependent Claim
74 words
A smoking article comprising a tobacco filler, an innerliner wrap encasing said filler, and an outer wrap over said innerliner wrap, said innerliner wrap comprising a combustible porous paper sheet of cellulosic fibers and finely pulverized activated carbon particles combined intimately with a precipitate of calcium citrate, said carbon particles having a porous surface whereby said calcium citrate is located into and onto said carbon particles to coat both the inner and outer surfaces.
Claim 9
Dependent Claim
20 words
The smoking article of claim 6 wherein the coated carbon comprises at least 5% by weight of the innerliner wrap.
Claim 10
Dependent Claim
20 words
The smoking article of claim 6 wherein the innerliner wrap includes St. John's Bread in an amount sufficient to flavor.
Claim 11
Dependent Claim
38 words
The smoking article of claim 6 wherein the innerliner wrap includes St. John's Bread in an amount of about 2% by weight and the coated carbon particles comprises from about 5 to 80% by weight of the wrap.
Claim 12
Dependent Claim
28 words
The smoking article of claim 6 wherein for every part by weight of carbon particles there is from about 0.6 to 1 part by weight of calcium citrate.
Claim 13
Independent Claim
87 words
The method for forming a porous paper sheet for use as a combustible innerliner wrap for a tobacco smoking article comprising suspending carbon in the form of finely pulverized, activated particles particles in a solution including a calcium salt, providing a solution including a citrate salt, mixing and stirring said suspension and solution whereby calcium citrate precipitates into and onto said carbon particles to coat both the inner and outer surfaces, mixing said coated carbon in a slurry of cellulosic fiber, and forming said porous paper sheet.
Claim 14
Independent Claim
87 words
The method for forming a porous paper sheet for use as a combustible innerliner wrap for a tobacco smoking article comprising suspending carbon in the form of finely pulverized, activated particles particles in a solution including a calcium salt, providing a solution including a citrate salt, mixing and stirring said suspension and solution whereby calcium citrate precipitates into and onto said carbon particles to coat both the inner and outer surfaces, mixing said coated carbon in a slurry of cellulosic fiber, and forming said porous paper sheet.
Claim 15
Dependent Claim
15 words
An innerliner wrap for a tobacco smoking article formed by the method of claim 11.
Claim 16
Dependent Claim
28 words
A smoking article comprising a tobacco filler, an innerliner wrap formed by the method of claim 11 encasing said filler, and an outer wrap over said innerliner wrap.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |