US3930040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of storing or shipping fresh meat in a modified gaseous atmosphere
Assignee: Transfresh Corp
•
Filing: 1974-09-16
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Granted: 1975-12-30
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Expires: 1994-09-16
Abstract
Abstract Meat and fish can be stored for extended periods under refrigerated conditions without loss of original qualities by maintaining the refrigerated meat in an artificial atmosphere composed of 2 1/2 -30% by volume molecular oxygen, 10-75% by volume molecular carbon dioxide, and 1-10% by volume carbon monoxide, and the remainder molecular nitrogen. Alternatively, the carbon monoxide may be removed from the modified atmosphere after the meat has been treated for at least one hour.
Inventors
- 👤 Richard E Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:58
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/14; A23B4/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
IN THE PROCESS OF STORGAE OR SHIPMENT OF FRESH MEAT REFIGERATED TO A TEMPERATURE IN THE RANGE OF 29*-40*F., THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF MAINTAINING SAID MEAT IN A MODIFIED GASEOUS ATMOSPHERE OF CARBON DIOXIDE, ABOUT 10-75% BY VOLUME MOLECULAR OXYGEN, ABOUT 2 1/2-30% BY VOLUME; CARBON MONOXIDE, ABOUT 1-10% BY VOLUME; AND THE REMAINDER ESSENTIALLY MOLEUCLAR NITROGEN DURING THE PERIOD OF STORAGE OR SHIPMENT.
Claim 2
Dependent Claim
66 words
IN THE PROCESS OF STORGAE OR SHIPMENT OF FRESH MEAT REFIGERATED TO A TEMPERATURE IN THE RANGE OF 29*-40*F., THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF MAINTAINING SAID MEAT IN A MODIFIED GASEOUS ATMOSPHERE OF CARBON DIOXIDE, ABOUT 10-75% BY VOLUME MOLECULAR OXYGEN, ABOUT 2 1/2-30% BY VOLUME; CARBON MONOXIDE, ABOUT 1-10% BY VOLUME; AND THE REMAINDER ESSENTIALLY MOLEUCLAR NITROGEN DURING THE PERIOD OF STORAGE OR SHIPMENT.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein said refrigeration temperature is about 32* - 34* F.
Claim 4
Dependent Claim
97 words
In the process of storage or shipment of fresh meat refrigerated to a temperature in the range of 29*-40* F., the improvement which consists essentially of: maintaining said meat in a modified gaseous atmosphere of about 10-75% by volume of molecular carbon dioxide, about 2 1/2 -30% by volume of molecular oxygen, about 1-10% by volume of carbon monoxide, and the remainder essentially molecular nitrogen; and purging the modified gaseous atmosphere of the carbon monoxide after at least one hour by flushing with a further modified atmosphere of 50% carbon dioxide, 25% oxygen, and the remainder nitrogen.
Claim 5
Dependent Claim
97 words
In the process of storage or shipment of fresh meat refrigerated to a temperature in the range of 29*-40* F., the improvement which consists essentially of: maintaining said meat in a modified gaseous atmosphere of about 10-75% by volume of molecular carbon dioxide, about 2 1/2 -30% by volume of molecular oxygen, about 1-10% by volume of carbon monoxide, and the remainder essentially molecular nitrogen; and purging the modified gaseous atmosphere of the carbon monoxide after at least one hour by flushing with a further modified atmosphere of 50% carbon dioxide, 25% oxygen, and the remainder nitrogen.
Claim 6
Dependent Claim
14 words
The process of claim 3, in which said refrigeration temperature is about 32*-34* F.
Claim 7
Dependent Claim
91 words
In the process of storage or shipment of meat maintained at a temperature in the range of 29*-40* F., the improvement which consists essentially of, in the order stated: exposing said meat to a first modified atmosphere of about 1-10% by volume of carbon monoxide and the remainder air; and after at least one hour flushing with and maintaining said meat in a second modified gaseous atmosphere of about 10-75% by volume of molecular carbon dioxide, about 2 1/2 - 30% by volume of molecular oxygen, and the remainder essentially nitrogen.
Claim 8
Dependent Claim
91 words
In the process of storage or shipment of meat maintained at a temperature in the range of 29*-40* F., the improvement which consists essentially of, in the order stated: exposing said meat to a first modified atmosphere of about 1-10% by volume of carbon monoxide and the remainder air; and after at least one hour flushing with and maintaining said meat in a second modified gaseous atmosphere of about 10-75% by volume of molecular carbon dioxide, about 2 1/2 - 30% by volume of molecular oxygen, and the remainder essentially nitrogen.
References Cited (Backward Citations)
US2490951A
Cited
US3469947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |