US4552791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container with decreased gas permeability
Assignee: Cosden Technology Inc
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Filing: 1983-12-09
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Granted: 1985-11-12
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Expires: 2003-12-09
Abstract
Abstract A container made of an organic resin having improved vapor barrier characteristics is disclosed which achieves an improved barrier by the placement thereon of a thin coating of an inorganic material.
Inventors
- 👤 Granville J. Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/10; C23C14/08; C23C14/083; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
52 words
A container having decreased gas permeability through the walls thereof, said container comprising: a thermoplastic organic resin container having at least one sidewall portion and a bottom portion made of said resin; and, a thin layer of an inorganic oxide coating material ion-deposition plated on at least part of said sidewall portion.
Claim 2
Dependent Claim
52 words
A container having decreased gas permeability through the walls thereof, said container comprising: a thermoplastic organic resin container having at least one sidewall portion and a bottom portion made of said resin; and, a thin layer of an inorganic oxide coating material ion-deposition plated on at least part of said sidewall portion.
Claim 3
Dependent Claim
20 words
The container of claim 1 wherein said resin is a polyester polymer and said inorganic coating is a metal oxide.
Claim 4
Dependent Claim
12 words
The container of claim 1 wherein said inorganic coating is silicon monoxide.
Claim 5
Dependent Claim
33 words
The container of claim 1 wherein said resin is a polyolefin and said coating is an inorganic oxide selected from the group consisting of tantalum oxide, titanium oxide, silicon monoxide and metallic oxides.
Claim 6
Dependent Claim
15 words
The container of claim 1 wherein said coating is up to about 500 Angstroms thick.
Claim 7
Dependent Claim
38 words
A polymer container having relatively thin walls and a reduced gas permeability therethrough, said container comprising: a structural body portion made of an organic resin polymer; and, a coating on said polymer comprising an inorganic oxide ion-plated thereon.
Claim 8
Dependent Claim
38 words
A polymer container having relatively thin walls and a reduced gas permeability therethrough, said container comprising: a structural body portion made of an organic resin polymer; and, a coating on said polymer comprising an inorganic oxide ion-plated thereon.
Claim 9
Dependent Claim
23 words
The container of claim 6 wherein said inorganic oxide is selected from the group consisting of silicon monoxide, tantalum oxide, and metallic oxides.
Claim 10
Dependent Claim
18 words
The container of claim 6 wherein said inorganic oxide is applied to said container by gasless ion plating.
Claim 11
Dependent Claim
20 words
The container of claim 8 wherein said inorganic oxide is up to about 500 Angstroms average thickness on said container.
Claim 12
Dependent Claim
62 words
A thermoplastic polymer container having decreased gas permeability through the walls thereof, said container comprising: a body portion having an enclosed bottom portion, all made of a thin polymer selected from the group consisting of polyolefins and polyesters; and, an inorganic oxide coating deposited on said body portion by gasless ion plating in a layer of up to about 500 Angstroms thick.
Claim 13
Dependent Claim
62 words
A thermoplastic polymer container having decreased gas permeability through the walls thereof, said container comprising: a body portion having an enclosed bottom portion, all made of a thin polymer selected from the group consisting of polyolefins and polyesters; and, an inorganic oxide coating deposited on said body portion by gasless ion plating in a layer of up to about 500 Angstroms thick.
Claim 14
Dependent Claim
21 words
The container of claim 10 wherein said coating is selected from the group comprising silicon oxides, tantalum oxides, and metallic oxides.
Claim 15
Dependent Claim
19 words
The container of claim 11 comprising a bottle made of polyethylene terephtahalate and a coating of an inorganic oxide.
Claim 16
Dependent Claim
17 words
The container of claim 11 comprising a bottle of polypropylene and a coating of an inorganic oxide.
Claim 17
Dependent Claim
11 words
The container of claim 12 wherein said oxide is silicon monoxide.
Claim 18
Dependent Claim
11 words
The container of claim 13 wherein said oxide is silicon monoxide.
References Cited (Backward Citations)
US4069933A
Cited
US4239827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |