US4515266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified atmosphere package and process
Assignee: Q-TECH INTERNATIONAL Inc
•
Filing: 1984-03-15
•
Granted: 1985-05-07
•
Expires: 2004-03-15
Abstract
Abstract A package for preserving produce in a wholesome condition for an extended period of time is formed by a sealed container enveloping the produce and filled with a preservative gas which inhibits bacterial growth. The container is formed by a high barrier film which is so perforated as to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from the container to prevent its distortion.
Inventors
- 👤 Richard A. Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/14; A23B7/144; A23B7/148; B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2069; B65D81/2084; B65D81/2092; B65D2565/00; B65D2565/38; B65D2565/381; B65D2565/387; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/80
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
A method for preserving produce which comprises placing the produce in a container formed by a high barrier film, removing the air from the container and replacing it with a preservative gas which inhibits bacterial growth, sealing the container, and perforating the film to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from the container to prevent its distortion.
Claim 2
Independent Claim
71 words
A method for preserving produce which comprises placing the produce in a container formed by a high barrier film, removing the air from the container and replacing it with a preservative gas which inhibits bacterial growth, sealing the container, and perforating the film to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from the container to prevent its distortion.
Claim 3
Dependent Claim
23 words
The method of claim 1, wherein the preservative gas is nitrogen, argon, helium or mixtures thereof with each other or with carbon dioxide.
Claim 4
Dependent Claim
22 words
The method of claim 2, wherein the film is so perforated as to provide a slightly positive gas pressure within the container.
Claim 5
Dependent Claim
72 words
A package for preserving produce in a wholesome condition for an extended period of time which comprises a sealed container enveloping the produce, filled with a preservative gas which inhibits bacterial growth, and formed by a high barrier film which is so perforated as to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from the container to prevent its distortion.
Claim 6
Dependent Claim
72 words
A package for preserving produce in a wholesome condition for an extended period of time which comprises a sealed container enveloping the produce, filled with a preservative gas which inhibits bacterial growth, and formed by a high barrier film which is so perforated as to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from the container to prevent its distortion.
Claim 7
Dependent Claim
23 words
The package of claim 4, wherein the preservative gas is nitrogen, argon, helium or mixtures thereof with each other or with carbon dioxide.
Claim 8
Dependent Claim
22 words
The package of claim 5, wherein the film is so perforated as to provide a slightly positive gas pressure within the container.
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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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |