US2587293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sugar crystallizing process
Assignee: Werkspoor NV
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Filing: 1948-01-23
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Granted: 1952-02-26
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Expires: 1968-01-23
Abstract
No abstract record available.
Inventors
- 👤 Vries Gerbertus H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:00
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE PROCESS FOR CRYSTALLINE SUGAR SOLUTIONS IN A CONTINUOUS OPERATION BY STEPWISE COOLING THE SUGAR SOLUTION SATURATED AT A TEMPERATURE OF ABOUT 100* C. AND CHARGED WITH SEED GRAINS, SAID COOLING BEING CARRIED OUT BY SUBJECTING THE MASS TO A STEPWISE INCREASING VACUUM AND DECREASING TEMPERATURE AND EVAPORATING IT WITHOUT SUPPLY OF HEAT, THE DIFFERENCES IN VACUUM BETWEEN THE SUCCEEDING STEPS INCREASING TOWARDS THE DELIVERY END OF THE PROCESS.
Claim 2
Dependent Claim
69 words
THE PROCESS FOR CRYSTALLINE SUGAR SOLUTIONS IN A CONTINUOUS OPERATION BY STEPWISE COOLING THE SUGAR SOLUTION SATURATED AT A TEMPERATURE OF ABOUT 100* C. AND CHARGED WITH SEED GRAINS, SAID COOLING BEING CARRIED OUT BY SUBJECTING THE MASS TO A STEPWISE INCREASING VACUUM AND DECREASING TEMPERATURE AND EVAPORATING IT WITHOUT SUPPLY OF HEAT, THE DIFFERENCES IN VACUUM BETWEEN THE SUCCEEDING STEPS INCREASING TOWARDS THE DELIVERY END OF THE PROCESS.
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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |