US3169381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized freezer
Assignee: Celsius First Ltd
•
Filing: 1964-04-13
•
Granted: 1965-02-16
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Persson Per-Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
F; F25; F25D; F25D13/00; F25D13/06; F25D13/067; A; A23; A23B; A23B2/00; A23B2/80; A23B2/803; F25D21/00; F25D21/06; F25D21/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF FREEZING SOLID FOOD PARTICLES COMPRISING: (A) FEEDING THE SAID PARTICLES INTO A CONTAINER; (B) CREATING A FLUIDIZED BED OF SAID PARTICLES SOLELY BY FORCING REFRIGERATED GAS UPWARDLY THERETHROUGH AND THEREAROUND TO ACHIEVE DISCRETE GLAZING AND FREEZING OF SAID PARTICLES; (C) PROVIDING A FLUID HEAD OF FLUIDIZED PARTICLES AT ONE END OF SAID CONTAINER BY FURTHER FEEDING MORE PARTICLES AT SAID END TO THEREBY ACHIEVE FLOW OF SAID PARTICLES FROM SAID ONE END OF SAID CONTAINER TO THE OTHER END THEREOF SIMULTANEOUSLY WITH THE FLUIDIZATION; AND (D) REMOVING THE THEN FROZEN PARTICLES FROM THE CONTAINER.
Claim 2
Independent Claim
97 words
A METHOD OF FREEZING SOLID FOOD PARTICLES COMPRISING: (A) FEEDING THE SAID PARTICLES INTO A CONTAINER; (B) CREATING A FLUIDIZED BED OF SAID PARTICLES SOLELY BY FORCING REFRIGERATED GAS UPWARDLY THERETHROUGH AND THEREAROUND TO ACHIEVE DISCRETE GLAZING AND FREEZING OF SAID PARTICLES; (C) PROVIDING A FLUID HEAD OF FLUIDIZED PARTICLES AT ONE END OF SAID CONTAINER BY FURTHER FEEDING MORE PARTICLES AT SAID END TO THEREBY ACHIEVE FLOW OF SAID PARTICLES FROM SAID ONE END OF SAID CONTAINER TO THE OTHER END THEREOF SIMULTANEOUSLY WITH THE FLUIDIZATION; AND (D) REMOVING THE THEN FROZEN PARTICLES FROM 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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |