US3100971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for storing and shipping perishable material
Assignee: Reliquefier Corp
•
Filing: 1961-04-10
•
Granted: 1963-08-20
•
Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Willard L Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF STORING FOOD WHICH CONSISTS IN PLACING A BODY OF FROZEN FOOD IN A FROZEN FOOD ZONE, SHOWERING SUCH FOOD WITH LIQUID NITROGEN AT ATMOSPHERIC PRESSURE UNTIL THE WATER OF COMPOSITION OF THE FROZEN FOOD HAS REACHED A PREDETERMINED LOW POINT, THEN CLOSING THE ZONE, PLACING FRESH FOOD AT TEMPERATURE IN THE ORDER OF 29 TO 35 DEGREES F. IN A FRESH FOOD ZONE, CLOSING THAT ZONE, CONDUCTING COLD GAS FROM THE FROZEN FOOD ZONE INTO HEAT RADIATING RELATIONSHIP WITH THE FRESH FOOD ZONE, WHILE PREVENTING ENTRANCE OF THE GAS INTO THE FRESH FOOD ZONE.
Claim 2
Independent Claim
97 words
THE METHOD OF STORING FOOD WHICH CONSISTS IN PLACING A BODY OF FROZEN FOOD IN A FROZEN FOOD ZONE, SHOWERING SUCH FOOD WITH LIQUID NITROGEN AT ATMOSPHERIC PRESSURE UNTIL THE WATER OF COMPOSITION OF THE FROZEN FOOD HAS REACHED A PREDETERMINED LOW POINT, THEN CLOSING THE ZONE, PLACING FRESH FOOD AT TEMPERATURE IN THE ORDER OF 29 TO 35 DEGREES F. IN A FRESH FOOD ZONE, CLOSING THAT ZONE, CONDUCTING COLD GAS FROM THE FROZEN FOOD ZONE INTO HEAT RADIATING RELATIONSHIP WITH THE FRESH FOOD ZONE, WHILE PREVENTING ENTRANCE OF THE GAS INTO THE FRESH FOOD ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |