US4420002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapper for smoking articles and method
Assignee: Magnera Corp
•
Filing: 1982-04-07
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Granted: 1983-12-13
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Expires: 2002-04-07
Abstract
Abstract There is disclosed a wrapper for smoking articles such as cigarettes, cigars and the like comprising a cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide. This is also disclosed a method for reducing the visible sidestream smoke emanating from a smoking article and solidifying the ash by wrapping the tobacco charge in the smoking article in a combustible cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Inventors
- 👤 Warren K. Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:29
CPC Classifications
A; A24; A24D; A24D1/00; A24D1/02; D; D21; D21H; D21H5/00; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
37 words
A wrapper for smoking articles such as cigarettes, cigars and the like comprising a cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 2
Dependent Claim
37 words
A wrapper for smoking articles such as cigarettes, cigars and the like comprising a cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 3
Dependent Claim
28 words
The wrapper as defined in claim 1 wherein the magnesium hydroxide is present in a range between 5% to 50% of the total weight of the cellulosic sheet.
Claim 4
Dependent Claim
22 words
The wrapper as defined in claims 1 or 2 wherein the particle size of magnesium hydroxide is not greater than 10 micrometers.
Claim 5
Dependent Claim
34 words
The wrapper as defined in claim 1 wherein the magnesium hydroxide is present in a range between 5% and 25% of the total weight of the cellulosic sheet with 50% total filler by weight.
Claim 6
Dependent Claim
21 words
The wrapper as defined in claim 1 wherein the particle size of the magnesium hydroxide is not greater than 2 micrometers.
Claim 7
Dependent Claim
26 words
The wrapper as defined in claim 1 wherein the magnesium hydroxide is present in an amount only sufficient to coat the fibers of the cellulosic sheet.
Claim 8
Dependent Claim
15 words
The wrapper of claims 1, 2 or 4 in which the wrapper is cigarette paper.
Claim 9
Dependent Claim
15 words
The wrapper of claims 1, 2 or 4 in which the wrapper is cigar wrap.
Claim 10
Dependent Claim
41 words
A smoking article comprising a tobacco charge and a wrapper for the tobacco charge, said wrapper comprising a cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 11
Dependent Claim
41 words
A smoking article comprising a tobacco charge and a wrapper for the tobacco charge, said wrapper comprising a cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 12
Dependent Claim
29 words
A smoking article as defined in claim 9 wherein the magnesium hydroxide is present in a range between 5% and 50% of the total weight of the cellulosic sheet.
Claim 13
Dependent Claim
24 words
A smoking article as defined in claims 9 or 10 wherein the particle size of the magnesium hydroxide is not greater than 10 micrometers.
Claim 14
Dependent Claim
35 words
A smoking article as defined in claim 9 wherein the magnesium hydroxide is present in a range between 2.5% and 25% of the total weight of the cellulosic sheet with 50% total filler by weight.
Claim 15
Dependent Claim
22 words
A smoking article as defined in claim 12 wherein the particle size of the magnesium hydroxide is not greater than 2 micrometers.
Claim 16
Dependent Claim
13 words
The invention defined in claim 9 wherein the smoking article is a cigarette.
Claim 17
Dependent Claim
13 words
The invention defined in claim 9 wherein the smoking article is a cigar.
Claim 18
Independent Claim
52 words
A method for reducing the visible sidestream smoke emanating from a smoking article and solidifying the ash comprising wrapping the tobacco charge in the smoking article in a combustible cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 19
Independent Claim
52 words
A method for reducing the visible sidestream smoke emanating from a smoking article and solidifying the ash comprising wrapping the tobacco charge in the smoking article in a combustible cellulosic sheet containing a filler of fine grain magnesium hydroxide having an average particle size less than 10 micrometers and unreactive magnesium oxide.
Claim 20
Dependent Claim
27 words
The method defined in claim 16 wherein the magnesium hydroxide is present in a range between 5% and 50% of the total weight of the cellulosic sheet.
Claim 21
Independent Claim
23 words
The method as defined in claims 16 or 17 wherein the particle size of the magnesium hydroxide is not greater than 10 micrometers.
Claim 22
Dependent Claim
35 words
The method defined in claim 16 wherein the magnesium hydroxide is present in a range between 2.5% and 25% of the total weight of the cellulosic sheet with up to 50% total filler by weight.
Claim 23
Dependent Claim
21 words
The wrapper as defined in claim 19 wherein the particle size of the magnesium hydroxide is not greater than 2 micrometers.
References Cited (Backward Citations)
US4231377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |