Patent US5791868A successfully refreshed from Google Patents.
Patent US2754897A successfully refreshed from Google Patents.
US2754897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for concentrating liquids containing incrustation-forming substances
Assignee: Individual
•
Filing: 1951-01-22
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Granted: 1956-07-17
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Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Ramen Torsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:54
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/10; D21C11/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS OF CONCENTRATING A LIQUID CONTAINING DISSOLVED SUBSTANCES THE SOLUBILITY OF WHICH IN SAID LIQUID DECREASE AS THE TEMPERATURE INCREASES, SAID PROCESS COMPRISING HEATING SAID LIQUID UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO CAUSE PRECIPITATION OF A SUBSTANTIAL PORTION OF SAID SUBSTANCES, CONCENTRATING SAID LIQUID BY EVAPORATION AT TEMPERATURES BELOW THAT TO WHICH THE LIQUID WAS HEATED TO AN EXTENT SUCH THAT THE CONCENTRATION OF THE LIQUID WITH RESPECT TO SAID SUBSTANCES IS STILL BELOW THE SATURATION CONCENTRATION OF SAID SUBSTANCES AT THE TEMPERATURES AT WHICH THE EVAPORATION IS CARRIED OUT, HEATING SAID LIQUID UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO CAUSE PRECIPITATION OF A FUTHER SUBSTANTIAL PORTION OF SAID SUBSTANCES AND CONCENTRATING SAID LIQUID BY EVAPORATION AT TEMPERATURES BELOW THE LAST-MENTIONED TEMPERATURE BUT ABOVE THE TEM-
Claim 2
Dependent Claim
128 words
A PROCESS OF CONCENTRATING A LIQUID CONTAINING DISSOLVED SUBSTANCES THE SOLUBILITY OF WHICH IN SAID LIQUID DECREASE AS THE TEMPERATURE INCREASES, SAID PROCESS COMPRISING HEATING SAID LIQUID UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO CAUSE PRECIPITATION OF A SUBSTANTIAL PORTION OF SAID SUBSTANCES, CONCENTRATING SAID LIQUID BY EVAPORATION AT TEMPERATURES BELOW THAT TO WHICH THE LIQUID WAS HEATED TO AN EXTENT SUCH THAT THE CONCENTRATION OF THE LIQUID WITH RESPECT TO SAID SUBSTANCES IS STILL BELOW THE SATURATION CONCENTRATION OF SAID SUBSTANCES AT THE TEMPERATURES AT WHICH THE EVAPORATION IS CARRIED OUT, HEATING SAID LIQUID UNDER PRESSURE TO A TEMPERATURE SUFFICIENT TO CAUSE PRECIPITATION OF A FUTHER SUBSTANTIAL PORTION OF SAID SUBSTANCES AND CONCENTRATING SAID LIQUID BY EVAPORATION AT TEMPERATURES BELOW THE LAST-MENTIONED TEMPERATURE BUT ABOVE THE TEM-
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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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |