Patent US2789909A successfully refreshed from Google Patents.
US2789909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for freeze-drying soft cheese
Assignee: FJ Stokes Corp
•
Filing: 1952-03-14
•
Granted: 1957-04-23
•
Expires: 1972-03-14
Abstract
No abstract record available.
Inventors
- 👤 Earl W Flosdorf
- 👤 William H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:26
CPC Classifications
A; A23; A23C; A23C19/00; A23C19/06; A23C19/086; F; F26; F26B; F26B5/00; F26B5/04; F26B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE FREEZE-DRYING OF SOFT CHEESE, THE STEP OF FREEZING THE CHEESE TO BE DRIED AT A RATE SUCH THAT IT REQUIRES AT LEAST ONE-HALF HOUR TO BECOME FROZEN, SUCH FREEZING BEING ACCOMPLISHED BY ABSTRACTING HEAT FROM THE CHEESE BY EXPOSURE THEREOF TO A REFRIGERANT MAINTAINED AT A TEMPERATURE HIGHER THAN -20*C. AND BELOW THE FREEZING POINT OF THE CHEESE.
Claim 2
Dependent Claim
60 words
IN THE FREEZE-DRYING OF SOFT CHEESE, THE STEP OF FREEZING THE CHEESE TO BE DRIED AT A RATE SUCH THAT IT REQUIRES AT LEAST ONE-HALF HOUR TO BECOME FROZEN, SUCH FREEZING BEING ACCOMPLISHED BY ABSTRACTING HEAT FROM THE CHEESE BY EXPOSURE THEREOF TO A REFRIGERANT MAINTAINED AT A TEMPERATURE HIGHER THAN -20*C. AND BELOW THE FREEZING POINT OF THE CHEESE.
References Cited (Backward Citations)
USRE18364E
Cited
US1997866A
Cited
US1970956A
Cited
US2066302A
Cited
US2225627A
Cited
US2446550A
Cited
US2576597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |