US3135670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating sea water for sea water flash evaporators
Assignee: Individual
•
Filing: 1960-08-31
•
Granted: 1964-06-02
•
Expires: 1980-08-31
Abstract
No abstract record available.
Inventors
- 👤 Antonio J Ristaino
- 👤 Jacob A Bauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:50
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/02; C02F5/04; C02F1/00; C02F1/02; C02F1/04; C02F1/042; Y; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A FLASH TYPE EVAPORATOR SYSTEM FOR PRODUCING DISTILLED WATER FROM SEA WATER, THE METHOD OF PREVENTING SCALE DEPOSITS ON BRINE HEAT TRANSFER SURFACES COMPRISING THE STEPS OF INJECTING INTO THE FEEDWATER A WATER SOLUBLE PYROPHOSPHATE IN CONCENTRATIONS OF FROM ONE TO FORTY PARTS PER MILLION OF THE FEEDWATER AND PERIODICALLY INJECTING A MILD ACID SOLUTION TO THE FEEDWATER TO RINSE SLUDGES FROM THE SYSTEM.
Claim 2
Dependent Claim
65 words
IN A FLASH TYPE EVAPORATOR SYSTEM FOR PRODUCING DISTILLED WATER FROM SEA WATER, THE METHOD OF PREVENTING SCALE DEPOSITS ON BRINE HEAT TRANSFER SURFACES COMPRISING THE STEPS OF INJECTING INTO THE FEEDWATER A WATER SOLUBLE PYROPHOSPHATE IN CONCENTRATIONS OF FROM ONE TO FORTY PARTS PER MILLION OF THE FEEDWATER AND PERIODICALLY INJECTING A MILD ACID SOLUTION TO THE FEEDWATER TO RINSE SLUDGES FROM THE SYSTEM.
References Cited (Backward Citations)
US1903041A
Cited
US1956515A
Cited
US2358965A
Cited
US2148006A
Cited
US2299748A
Cited
US2326950A
Cited
US2381960A
Cited
US2756035A
Cited
US2777818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |