US2713003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydration of food products
Assignee: Individual
•
Filing: 1951-03-09
•
Granted: 1955-07-12
•
Expires: 1971-03-09
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Rivoche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:25
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/90; A23B2/905; A23B4/00; A23B4/03; A23B4/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN THE DEHYDRATION OF SOLID FOODSTUFFS, THE STEP OF RENDERING PERMEABLE THE OUTER SURFACE OF THE FOODSTUFF WHICH COMPRISES EXPOSING SAID SUBSTANCE TO A COOLING MEDIUM AT A TEMPERATURE SUFFICIENTLY LOW TO RAPIDLY LOWER THE TEMPERATURE OF THE OUTER LAYER OF SAID SUBSTANCE TO A TEMPERATURE SUBSTANTIALLY BELOW THE FREEZING POINT OF THE LIQUID CONTENT OF SAID LAYER, MAINTAINING THE FOODSTUFF IN HEAT EXCHANGE RELATIONSHIP TO THE COOLING MEDIUM FOR A LENGTH OF TIME SUFFICIENT ONLY TO FREEZE THE LIQUID CONTENT IN SAID OUTER LAYER TO PRODUCE MINUTE FROZEN PARTICLES OF CRYSTALLINE FORM IMMEDIATELY BELOW THE SURFACE OF SAID SUBSTANCE, WHICH FROZEN PARTICLES PIERCE SAID SURFACE, THE PORTION OF SAID FOOD STUFF INWARDLY OF THE OUTER LAYER BEING MAINTAINED AT A TEMPERATURE ABOVE ITS FREEZING POINT AND THEREAFTER RAISING THE TEMPERATURE OF SAID OUTER FROZEN LAYER SUFFICIENTLY TO CAUSE SAID FROZEN PARTICLES TO MELT.
Claim 2
Dependent Claim
144 words
IN THE DEHYDRATION OF SOLID FOODSTUFFS, THE STEP OF RENDERING PERMEABLE THE OUTER SURFACE OF THE FOODSTUFF WHICH COMPRISES EXPOSING SAID SUBSTANCE TO A COOLING MEDIUM AT A TEMPERATURE SUFFICIENTLY LOW TO RAPIDLY LOWER THE TEMPERATURE OF THE OUTER LAYER OF SAID SUBSTANCE TO A TEMPERATURE SUBSTANTIALLY BELOW THE FREEZING POINT OF THE LIQUID CONTENT OF SAID LAYER, MAINTAINING THE FOODSTUFF IN HEAT EXCHANGE RELATIONSHIP TO THE COOLING MEDIUM FOR A LENGTH OF TIME SUFFICIENT ONLY TO FREEZE THE LIQUID CONTENT IN SAID OUTER LAYER TO PRODUCE MINUTE FROZEN PARTICLES OF CRYSTALLINE FORM IMMEDIATELY BELOW THE SURFACE OF SAID SUBSTANCE, WHICH FROZEN PARTICLES PIERCE SAID SURFACE, THE PORTION OF SAID FOOD STUFF INWARDLY OF THE OUTER LAYER BEING MAINTAINED AT A TEMPERATURE ABOVE ITS FREEZING POINT AND THEREAFTER RAISING THE TEMPERATURE OF SAID OUTER FROZEN LAYER SUFFICIENTLY TO CAUSE SAID FROZEN PARTICLES TO MELT.
References Cited (Backward Citations)
US2520891A
Cited
US2490951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |