US3213634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for individual quick freezing
Assignee: Airco Inc
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Filing: 1964-05-05
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Granted: 1965-10-26
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Expires: 1984-05-05
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Granata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:55
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/06; A23B4/062; A23B2/00; A23B2/80; A23B2/85; A23B2/88; F; F25; F25D; F25D3/00; F25D3/12; F25D3/127; F25D2400/00; F25D2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE METHOD OF FREEZING FOOD PIECES IN A SPACE BOUNDED BY WALL SURFACES, WHICH METHOD COMPRISES INITIALLY COATING A WALL AT THE BEGINNING OF SAID SPACE WITH SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM, PLACING A PLURALITY OF INDIVIDUAL PIECES ON THE COATED WALL, APPLYING MORE SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM TO THE SURFACES OF THE PIECES ON SAID WALL, ADVANCING THE PIECES FROM AN ENTRANCE END OF THE SPACE AND LENGTHWISE TO THE SPACE IN INTIMATE CONTACT WITH THE CARBON DIOXIDE AND WHILE THE CARBON DIOXIDE SUBLIMES AS THE RESULT OF HEAT ABSORBED FROM THE FOOD PIECES, SUPPLYING AN ADDITIONAL QUANTITY OF SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM SUFFICIENT TO FREEZE ALL OF THE PIECES, AND WITHDRAWING THE PIECES IN FROZEN CONDITION FROM THE OPPOSITE END OF THE SPACE FROM SAID ENTRANCE END.
Claim 2
Independent Claim
137 words
THE METHOD OF FREEZING FOOD PIECES IN A SPACE BOUNDED BY WALL SURFACES, WHICH METHOD COMPRISES INITIALLY COATING A WALL AT THE BEGINNING OF SAID SPACE WITH SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM, PLACING A PLURALITY OF INDIVIDUAL PIECES ON THE COATED WALL, APPLYING MORE SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM TO THE SURFACES OF THE PIECES ON SAID WALL, ADVANCING THE PIECES FROM AN ENTRANCE END OF THE SPACE AND LENGTHWISE TO THE SPACE IN INTIMATE CONTACT WITH THE CARBON DIOXIDE AND WHILE THE CARBON DIOXIDE SUBLIMES AS THE RESULT OF HEAT ABSORBED FROM THE FOOD PIECES, SUPPLYING AN ADDITIONAL QUANTITY OF SOLID PHASE CARBON DIOXIDE IN PARTICULATE FORM SUFFICIENT TO FREEZE ALL OF THE PIECES, AND WITHDRAWING THE PIECES IN FROZEN CONDITION FROM THE OPPOSITE END OF THE SPACE FROM SAID ENTRANCE END.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |