US4279350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure with oxygen scavenging system
Assignee: SPECIALTY ACQUISITION Corp A CORP OF DELAWARE
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Filing: 1979-10-11
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Granted: 1981-07-21
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Expires: 1999-10-11
Abstract
Abstract An oxygen-scavenging system for use in a closure for containers is disclosed. The system is in the form of a closure liner that incorporates a catalyst disposed between an oxygen permeable barrier and a water absorbent backing member. The backing member rests against the inside of the closure and the oxygen permeable barrier rests against the mouth of the container and the catalyst is sandwiched between the backing member and the barrier. The backing member may be porous and the closure may be perforated to allow water to escape.
Inventors
- 👤 Roderick V. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:29
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24; B65D51/244
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
95 words
In combination a closure and a liner comprising, a cup-like closure body having a closed end and a rim means on said closure body for removably attaching said closure to a container, a liner in said cup-like closure body, said liner comprising an oxygen permeable barrier layer adapted to rest on the open end of said container and a backing layer adapted to rest against the closed end of said closure and a layer of catalytic material disposed between said barrier and said backing and adapted to convert oxygen permeating said barrier layer to water.
Claim 2
Dependent Claim
95 words
In combination a closure and a liner comprising, a cup-like closure body having a closed end and a rim means on said closure body for removably attaching said closure to a container, a liner in said cup-like closure body, said liner comprising an oxygen permeable barrier layer adapted to rest on the open end of said container and a backing layer adapted to rest against the closed end of said closure and a layer of catalytic material disposed between said barrier and said backing and adapted to convert oxygen permeating said barrier layer to water.
Claim 3
Dependent Claim
20 words
The combination recited in claim 1 wherein said liner is generally cylindrical in shape and fits snuggly inside said closure.
Claim 4
Dependent Claim
20 words
The closure recited in claim 2 wherein said closure body has thread means thereon for attaching it to a container.
Claim 5
Dependent Claim
15 words
The combination recited in claims 1 or 2 wherein said backing layer is water absorbent.
Claim 6
Dependent Claim
12 words
The combination recited in claim 4 wherein said closed end is perforated.
Claim 7
Dependent Claim
21 words
The combination recited in claims 1 or 2 wherein said closure body is perforated and said backing layer is water absorbent.
Claim 8
Dependent Claim
11 words
The closure recited in claim 6 wherein said closure is perforated.
Claim 9
Dependent Claim
31 words
The combination recited in claims 1 or 2 wherein a second barrier layer is disposed between said backing layer and said catalytic material, said second barrier layer being impervious to water.
Claim 10
Dependent Claim
13 words
The closure recited in claim 8 wherein said backing layer is water absorbent.
Claim 11
Dependent Claim
30 words
The combination recited in claims 1 or 2 wherein said means for attaching said closure to said container comprises internal thread for attachment to external thread means on said container.
Claim 12
Dependent Claim
12 words
The combination recited in claim 1 wherein said backing layer is resilient.
Claim 13
Dependent Claim
34 words
The combination recited in claims 1 or 11 wherein said means for attaching said closure to said container comprises internal thread means on said closure for attachment to external thread means on said container.
Claim 14
Dependent Claim
14 words
The combination recited in claims 1 or 4 wherein said closed end is perforated.
Claim 15
Dependent Claim
22 words
The closure and liner recited in claim 1 wherein a water impermeable film is supported between said catalytic and said backing member.
Claim 16
Dependent Claim
13 words
The closure recited in claim 1 wherein said backing layer is water absorbent.
Claim 17
Dependent Claim
32 words
The closure recited in claim 1 wherein said oxygen permeable barrier is also permeable to water for allowing water formed from oxygen by said catalytic material to be returned to said container.
Claim 18
Dependent Claim
74 words
A liner for a closure comprising, a cylindrical disc-like member adapted to be received in a container closure, said liner comprising an oxygen permeable barrier layer adapted to rest on the open end of said container and a backing layer adapted to rest against the closed end of said closure and a layer of catalytic material disposed between said barrier and said backing and adapted to convert oxygen permeating said barrier layer to water.
Claim 19
Dependent Claim
74 words
A liner for a closure comprising, a cylindrical disc-like member adapted to be received in a container closure, said liner comprising an oxygen permeable barrier layer adapted to rest on the open end of said container and a backing layer adapted to rest against the closed end of said closure and a layer of catalytic material disposed between said barrier and said backing and adapted to convert oxygen permeating said barrier layer to water.
Claim 20
Dependent Claim
22 words
The combination recited in claim 17 wherein said liner is generally cylindrical in shape and adapted to fit snuggly inside said closure.
Claim 21
Dependent Claim
15 words
The combination recited in claims 17 or 18 wherein said backing layer is water absorbent.
Claim 22
Dependent Claim
30 words
The combination recited in claims 17 or 18 in combination with a closure having a closure body wherein said closure body is perforated and said backing layer is water absorbent.
Claim 23
Dependent Claim
31 words
The combination recited in claims 17 or 18 wherein a second barrier layer is disposed between said backing member and said catalytic material, said second barrier layer being impervious to water.
Claim 24
Dependent Claim
14 words
The combination recited in claim 17 or 18 wherein said backing layer is resilient.
Claim 25
Dependent Claim
79 words
A container closure comprising, a gas impermeable generally cylindrical body closed at one end and a thread means on said closure for attaching it to a container, an oxygen scavenging system in said closure, said oxygen scavenging system comprising an oxygen permeable barrier, a backing member and a layer of catalytic material between said oxygen permeable barrier and said backing member, said scavenging system being in the form of a round disc attached on the inside of said closure.
Claim 26
Dependent Claim
79 words
A container closure comprising, a gas impermeable generally cylindrical body closed at one end and a thread means on said closure for attaching it to a container, an oxygen scavenging system in said closure, said oxygen scavenging system comprising an oxygen permeable barrier, a backing member and a layer of catalytic material between said oxygen permeable barrier and said backing member, said scavenging system being in the form of a round disc attached on the inside of said closure.
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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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |