US3114248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for freezing hot cooked food
Assignee: Individual
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Filing: 1961-10-20
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Granted: 1963-12-17
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Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 Willard L Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/80; A23B2/803; A23B2/8033; F; F25; F25D; F25D3/00; F25D3/10; F25D3/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
METHOD OF FREEZING FOOD WHICH CONSISTS IN PLACING IT IN AN OPEN FACE PORTABLE PAN, INSERTING THE PAN INTO A COOLING CHAMBER FILLED WITH GASEOUS NITROGEN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND -320 DEGREES F., SPRINKLING THE EXPOSED SURFACE OF THE MATERIAL IN THE PAN WITH LIQUID NITROGEN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND -320 DEGREES F. UNTIL A HARD, FROZEN CRUST IS FORMED OVER SUCH SURFACE, THEN IMMERSING THE PAN INTO A BATH OF LIQUID NITROGEN AT ATMOSPHERIC PRESSURE AND -320 DEGREES F. BELOW THE SURFACE OF THE BATH UNTIL THE ENTIRE CONTENTS OF THE PAN IS SOLIDLY FROZEN, THEN WITHDRAWING THE PAN FROM THE BATH, REMOVING ANY LIQUID NITROGEN REMAINING IN THE PAN AND THEN DISCHARGING THE PAN AND ITS FROZEN CONTENTS FROM THE COOLING CHAMBER.
Claim 2
Dependent Claim
126 words
METHOD OF FREEZING FOOD WHICH CONSISTS IN PLACING IT IN AN OPEN FACE PORTABLE PAN, INSERTING THE PAN INTO A COOLING CHAMBER FILLED WITH GASEOUS NITROGEN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND -320 DEGREES F., SPRINKLING THE EXPOSED SURFACE OF THE MATERIAL IN THE PAN WITH LIQUID NITROGEN AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND -320 DEGREES F. UNTIL A HARD, FROZEN CRUST IS FORMED OVER SUCH SURFACE, THEN IMMERSING THE PAN INTO A BATH OF LIQUID NITROGEN AT ATMOSPHERIC PRESSURE AND -320 DEGREES F. BELOW THE SURFACE OF THE BATH UNTIL THE ENTIRE CONTENTS OF THE PAN IS SOLIDLY FROZEN, THEN WITHDRAWING THE PAN FROM THE BATH, REMOVING ANY LIQUID NITROGEN REMAINING IN THE PAN AND THEN DISCHARGING THE PAN AND ITS FROZEN CONTENTS FROM THE COOLING CHAMBER.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |