US3017752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desalting sea water
Assignee: Phillips Petroleum Co
•
Filing: 1959-08-28
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Granted: 1962-01-23
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Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Findlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METHOD FOR THE PURIFICATION OF SALT WATER WHICH COMPRISES INJECTING A REFRIGERANT INTO A BODY OF SALT WATER, CHILLING SAID SALT WATER BY EVAPORATION OF SAID REFRIGERANT THEREIN, RECOVERING REFRIGERANT VAPORS THUS FORMED, PASSING AN ICE-CONTAINING SLURRY THUS OBTAINED TO A FRACTIONAL CRYSTALLIZATION OPERATION, THEREIN PURIFYING ICE CRYSTALS
Claim 2
Independent Claim
49 words
A METHOD FOR THE PURIFICATION OF SALT WATER WHICH COMPRISES INJECTING A REFRIGERANT INTO A BODY OF SALT WATER, CHILLING SAID SALT WATER BY EVAPORATION OF SAID REFRIGERANT THEREIN, RECOVERING REFRIGERANT VAPORS THUS FORMED, PASSING AN ICE-CONTAINING SLURRY THUS OBTAINED TO A FRACTIONAL CRYSTALLIZATION OPERATION, THEREIN PURIFYING ICE CRYSTALS
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |