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US5064698A
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US
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Food packaging improvements
Assignee: WM Wrigley Jr Co
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Filing: 1989-02-16
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Granted: 1991-11-12
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Expires: 2009-02-16
Abstract
Abstract A food packaging material that has a plurality of porous polymeric beads impregnated with an anti-oxidant, or oxygen scavenger compound.
Inventors
- 👤 Steven B. Courtright
- 👤 Gordon N. McGrew
- 👤 Lindell C. Richey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:16
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24; B65D51/244; B65D81/00; B65D81/24; B65D81/26; B65D81/266; B65D81/267; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/1352; Y10T428/1379; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A food packaging material that when sealed forms a substantially air-tight enclosure, comprising: a barrier material that is resistant to air permeation, said barrier material forming an enclosure that can be sealed to enclose a food, said barrier material having an inside surface inside said enclosure; and a plurality of porous polymeric beads impregnated with a substance that causes elemental oxygen in the sealed enclosure to react to form a substantially unreactive compound, said beads being disposed adjacent the inside surface of said barrier material.
Claim 2
Dependent Claim
85 words
A food packaging material that when sealed forms a substantially air-tight enclosure, comprising: a barrier material that is resistant to air permeation, said barrier material forming an enclosure that can be sealed to enclose a food, said barrier material having an inside surface inside said enclosure; and a plurality of porous polymeric beads impregnated with a substance that causes elemental oxygen in the sealed enclosure to react to form a substantially unreactive compound, said beads being disposed adjacent the inside surface of said barrier material.
Claim 3
Dependent Claim
16 words
The food packaging material of claim 1 wherein said beads are immobilized on said inside surface.
Claim 4
Dependent Claim
20 words
The food packaging material of claim 2 wherein said beads are immobilized by being incorporated into an oxygen permeable layer.
Claim 5
Dependent Claim
18 words
The food packaging material of claim 1 wherein said beads are from 10 to 100 microns in size.
Claim 6
Dependent Claim
13 words
The food packaging material of claim 1 wherein said enclosure is a bag.
Claim 7
Dependent Claim
13 words
The food packaging material of claim 1 wherein said enclosure is a box.
Claim 8
Dependent Claim
18 words
The food packaging material of claim 1 wherein said barrier material is made from a polymeric sheet material.
Claim 9
Dependent Claim
14 words
The food packaging material of claim 7 wherein said barrier material comprises a saran.
Claim 10
Dependent Claim
24 words
The food packaging material of claim 1 wherein said substance is selected from the group consisting of iron oxide, BHA, BHT and glucose oxidase.
Claim 11
Dependent Claim
15 words
The food packaging material of claim 1 wherein said barrier material comprises a bottle cap.
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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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |