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US3300993A
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Freezing apparatus and method
Assignee: Individual
•
Filing: 1964-02-25
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Granted: 1967-01-31
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Schlemmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/80; A23B2/85; A23B2/88; A23B2/803; F; F25; F25D; F25D13/00; F25D13/06; F25D13/067
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
IN A METHOD FOR COOLING UNFROZEN FOOD PARTICLES TO A PREDETERMINED TEMPERATURE SUBSTANTIALLY BELOW THE FREEZING TEMPERATURE THEREOF, THE IMPROVEMENT COMPRISING TUMBLING THE PARTICLES THROUGH AN ELONGATED FIRST ZONE, PASSING A GASEOUS COOLANT HAVING A TEMPERATURE BELOW THE FREEZING TEMPERATURE OF THE PARTICLES BUT ABOVE SAID PREDETERMINED TEMPERATURE THROUGH THE FIRST ZONE AND IN DIRECT CONTACT WITH THE PARTICLES THEREIN, DIRECTING THE FOOD PARTICLES AND COOLANT THROUGH THE FIRST ZONE ALONG A HELICAL PATH, SEPARATING THE PARTICLES FROM THE COOLANT, PASSING THE SEPARATED PARTICLES THROUGH A SECOND ZONE, AND PASSING A GASEOUS COOLANT HAVING A TEMPERATURE BELOW SAID PREDETERMINED TEMPERATURE IN DIRECT CONTACT WITH SAID SEPARATED PARTICLES IN SAID SECOND ZONE TO COOL SAID SEPARATE PARTICLES TO SAID PREDETERMINED TEMPERATURE.
References Cited (Backward Citations)
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US2223972A
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |