US2614035A
Expired / Lapsed
US
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Evaporative crystallization process and apparatus therefor
Assignee: Phillips Petroleum Co
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Filing: 1949-01-04
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Granted: 1952-10-14
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Expires: 1969-01-04
Abstract
No abstract record available.
Inventors
- 👤 Sam P Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:50
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0009; B01D9/0018; B01D9/0036; B01D9/0063; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
AN IMPROVED PROCESS FOR THE MANUFACTURE OF CRYSTALS WHICH COMPRISES INTRODUCING A HOT SATURATED SALT FEED SOLUTION AT A TEMPERATURE IN THE RANGE OF 5* TO 1* F. BELOW ITS BOILING POINT SATURATION LIMIT TO A CONE BOTTOMED EVAPORATIVE CRYSTALLIZATION ZONE; INTRODUCING A STREAM OF GAS TO SAID SOLUTION AT A SUFFICIENT RATE TO PASS THERETHROUGH AND TO CAUSE COOLING TO A TEMPERATURE IN THE RANGE OF 145 TO 150* F., EVAPORATION, CRYSTALLIZATION, TURBULENCE OF SAID SOLUTION, AND CLASSIFICATION OF CRYSTALS; REMOVING SAID GAS FROM SAID EVAPORATIVE CRYSTALLIZATION TO A SEPARATION ZONE WHEREIN EN-
References Cited (Backward Citations)
US2037595A
Cited
US2348328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |