US4607647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoking articles
Assignee: BRITISH-AMERICAN TOBACCO Co Ltd WESTMINSTER HOUSE 7 MILLBAK LONDON SW1P 3JE ENGLAND A CORP OF GREAT BRITAIN
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Filing: 1984-06-11
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Granted: 1986-08-26
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Expires: 2004-06-11
Abstract
Abstract The smoking articles, such as cigarettes, comprise smoking material wrapped in a low side stream wrapper paper incorporating or being coated with a stain resist substance, such as EVA (ethylene vinyl acetate).
Inventors
- 👤 Frederick J. Dashley
- 👤 David J. Dittrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:07
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/14; D21H5/16; A; A24; A24D; A24D1/00; A24D1/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
48 words
A smoking article wrapping paper which effects at least thirty percent reduction of side stream TPM as compared with a conventional wrapper paper, the paper having an air permeability of less than 10 CORESTA units and including a stain resist substance substantially uniformly distributed substantially throughout the paper.
Claim 2
Dependent Claim
48 words
A smoking article wrapping paper which effects at least thirty percent reduction of side stream TPM as compared with a conventional wrapper paper, the paper having an air permeability of less than 10 CORESTA units and including a stain resist substance substantially uniformly distributed substantially throughout the paper.
Claim 3
Dependent Claim
24 words
A paper as claimed in claim 1 wherein the distribution level of the stain resist substance is up to 20 grams per square meter.
Claim 4
Dependent Claim
24 words
A paper as claimed in claim 2 wherein the distribution level of the stain resist substance does not exceed 5 grams per square meter.
Claim 5
Dependent Claim
41 words
A paper as claimed in claim 1 wherein the stain resist substance consists of one of, or a combination of ethylene vinyl acetate (EVA), polyvinyl acetate (PVA), cationic starch, cold water starch, polyvinyl alcohol (PVOH) carboxmethyl cellulose (CMC) and nitro-cellulose lacquer.
Claim 6
Dependent Claim
30 words
A paper as claimed in any one of claims 1 or 2-4 inclusive wherein the stain resist substance is incorporated in the paper as an ingredient during the manufacture thereof.
Claim 7
Dependent Claim
25 words
A paper as claimed in claim 1 wherein the stain resist substance is supplied as a coating to the paper as an emulsion or solution.
Claim 8
Dependent Claim
40 words
A paper as in any of claims 1 or 2-6 wherein said paper is to be formed into a cylindrical tube the stain resist substance is applied to that side of the paper which comprises the interior of said tube.
Claim 9
Dependent Claim
60 words
A smoking article comprising smoking material and wrapper paper circumscribing the smoking material, the wrapper paper comprising a paper which effects at least thirty percent reduction of side stream TPM as compared with a conventional wrapper paper, having an air permeability of less than 10 CORESTA units and including a stain resist substance substantially uniformaly disstributed substantially throughout the paper.
Claim 10
Dependent Claim
60 words
A smoking article comprising smoking material and wrapper paper circumscribing the smoking material, the wrapper paper comprising a paper which effects at least thirty percent reduction of side stream TPM as compared with a conventional wrapper paper, having an air permeability of less than 10 CORESTA units and including a stain resist substance substantially uniformaly disstributed substantially throughout the paper.
Claim 11
Dependent Claim
25 words
A smoking article as claimed in claim 8 wherein the stain resist substance is incorporated as an ingredient in the paper during the manufacture thereof.
Claim 12
Dependent Claim
25 words
A smoking article as claimed in claim 9 wherein the distribution level of the stain resist substance does not exceed 5 grams per square meter.
Claim 13
Dependent Claim
42 words
A smoking article as claimed in claim 8 wherein the stain resist substance consists of one of, or a combination of ethylene vinyl acetate (EVA), polyvinyl acetate (PVA), cationic starch, cold water starch, polyvinyl alcohol (PVOH), carboxmethyl cellulose (CMC) and nitro-celluose lacquer.
Claim 14
Dependent Claim
26 words
A smoking article as claimed in claim 8 wherein the stain resist substance is applied as a coating to the paper as an emulsion or solution.
Claim 15
Dependent Claim
41 words
A smoking article as claimed in any one of claims 8 to 12 inclusive wherein the stain resist substance is applied to that side of the paper which comprises the inner side when the paper is incorporated in a smoking article.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |