Patent US5268209A successfully refreshed from Google Patents.
US5268209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nicotine packaging materials
Assignee: Alza Corp
•
Filing: 1991-10-21
•
Granted: 1993-12-07
•
Expires: 2011-10-21
Abstract
Abstract The invention herein pertains to methods and materials for producing a nicotine maintenance pouch. Laminates comprising a nicotine barrier layer and a nicotine degradation agent barrier layer are disclosed. In a preferred embodiment, the nicotine barrier layer comprises a nitrile rubber modified acrylonitrilemethyl acrylate copolymer. An especially preferred nicotine barrier material comprises, by weight percent, 75% acrylonitrile, and 25% methyl acrylate with 10% butadiene (AN-MA/B). The nicotine degradation agent barrier layer is preferably aluminum foil. In an especially preferred embodiment, the laminate comprises a layer of AN-MA/B adhered to a layer of aluminum foil, which in turn is adhered to a layer of paper stock. Pouches comprising a self-sealed nicotine barrier layer and a nicotine degradation agent barrier layer are disclosed. These pouches are preferably formed from the laminates above. A method for production of pouches comprises: (a) providing a laminate including a self-sealable nicotine barrier layer and a nicotine degradation agent barrier layer; and (b) sealing the self-sealable nicotine barrier layer to enclose a nicotine device.
Inventors
- 👤 James A. Hunt
- 👤 James L. Osborne
- 👤 John T. Dunn
- 👤 Melinda K. Nelson
- 👤 Nathan Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B27/06; A; A61; A61K; A61K9/00; A61K9/70; A61K9/7023; A61K9/703; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D75/00; B65D75/26; B32B2311/00; B32B2311/24; B32B2439/00; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/1334; Y10T428/1338; Y10T428/1341; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31583; Y10T428/31587; Y10T428/31605; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
71 words
A laminate for forming a self-sealed nicotine maintenance pouch, said laminate comprising a heat sealable nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine barrier layer, a nicotine degration agent barrier layer, an adhesive layer bonding said degradation agent barrier layer to said nicotine barrier layer, a protective layer and an adhesive layer bonding said nicotine degration agent barrier layer to said protective layer.
Claim 2
Dependent Claim
71 words
A laminate for forming a self-sealed nicotine maintenance pouch, said laminate comprising a heat sealable nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine barrier layer, a nicotine degration agent barrier layer, an adhesive layer bonding said degradation agent barrier layer to said nicotine barrier layer, a protective layer and an adhesive layer bonding said nicotine degration agent barrier layer to said protective layer.
Claim 3
Dependent Claim
47 words
The laminate according to claim 1 wherein the nicotine barrier layer comprises a graft copolymer formed from 73-77% acrylonitrile and from 23-27% methyl acrylate copolymerized in the presence of 8-10 parts by weight of butadiene/acrylonitrile copolymers containing approximately 70% by weight of polymer units derived from butadiene.
Claim 4
Dependent Claim
17 words
The laminate according to claim 1 wherein the nicotine degradation agent barrier layer is a metal foil.
Claim 5
Dependent Claim
16 words
The laminate according to claim 2 wherein the nicotine degradation agent barrier layer is aluminum foil.
Claim 6
Dependent Claim
12 words
The laminate according to claim 1 wherein said protective layer is paper.
Claim 7
Dependent Claim
20 words
The laminate of claim 5 wherein the thickness of said nicotine barrier layer is in the range of 0.8-2.5 mil.
Claim 8
Dependent Claim
21 words
The laminate of claim 6 wherein said metal foil is aluminum foil having a thickness in the range of 0.35-1.0 mil.
Claim 9
Dependent Claim
88 words
A nicotine maintenance pouch having opposing sides enclosing and sealing an internal volume for containing nicotine, said sides being formed from a laminate comprising a heat sealable nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine barrier layer, a nicotine degradation agent barrier layer, an adhesive layer bonding said degradation agent barrier layer to said nicotine barrier layer, a protective layer and an adhesive layer bonding said nicotine degradation agent barrier layer to said protective layer said internal volume being defined in its entirety by said nicotine barrier layer.
Claim 10
Dependent Claim
88 words
A nicotine maintenance pouch having opposing sides enclosing and sealing an internal volume for containing nicotine, said sides being formed from a laminate comprising a heat sealable nitrile rubber modified acrylonitrile methyl acrylate copolymer nicotine barrier layer, a nicotine degradation agent barrier layer, an adhesive layer bonding said degradation agent barrier layer to said nicotine barrier layer, a protective layer and an adhesive layer bonding said nicotine degradation agent barrier layer to said protective layer said internal volume being defined in its entirety by said nicotine barrier layer.
Claim 11
Dependent Claim
47 words
The pouch according to claim 8 wherein the nicotine barrier layer comprises a graft copolymer formed from 73-77% acrylonitrile and from 23-27% methyl acrylate copolymerized in the presence of 8-10 parts by weight of butadiene/acrylonitrile copolymers containing approximately 70% by weight of polymer units derived from butadiene.
Claim 12
Dependent Claim
17 words
The pouch according to claim 8 wherein the nicotine degradation agent barrier layer is a metal foil.
Claim 13
Dependent Claim
16 words
The pouch according to claim 9 wherein the nicotine degradation agent barrier layer is aluminum foil.
Claim 14
Dependent Claim
10 words
The pouch of claim 8 wherein protective layer is paper.
Claim 15
Dependent Claim
33 words
The pouch of claim 8 further comprising a protective layer forming at least a portion of the external surface of said pouch and adhesive layer bonding said protective layer to said metal foil.
Claim 16
Dependent Claim
33 words
The pouch of claim 11 further comprising a paper layer forming at least a portion of the external surface of said pouch and adhesive layer bonding said paper layer to said aluminum foil.
Claim 17
Dependent Claim
20 words
The pouch of claim 14 wherein the thickness of said nicotine barrier layer is in the range of 0.8-2.5 mil.
Claim 18
Dependent Claim
19 words
The pouch of claim 15 wherein the thickness of said aluminum foil is in the range of 0.35-1.0 mil.
References Cited (Backward Citations)
US3252802A
Cited
US3426102A
Cited
US3877468A
Cited
US3845217A
Cited
US3870794A
Cited
US4139665A
Cited
US4265948A
Cited
US4386138A
Cited
JPS55124654A
Cited
US4748181A
Cited
EP0075486B1
Cited
US4387126A
Cited
US4758434A
Cited
DE3438284A1
Cited
US4597961A
Cited
GB2171906A
Cited
US4680172A
Cited
US4665069A
Cited
US4920989A
Cited
JPS61251619A
Cited
US4715387A
Cited
WO1987002870A1
Cited
EP0251425A1
Cited
DE3629304A1
Cited
AU8145487A
Cited
EP0273004A2
Cited
US4769261A
Cited
US4946853A
Cited
US4839174A
Cited
US4943435A
Cited
US5008110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |