Patent US3298931A successfully refreshed from Google Patents.
US3298931A
Expired / Lapsed
US
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Removal of scale in distillation of sea water containing magnesium salts
Assignee: Commonwealth Scientific and Industrial Research Organisation
•
Filing: 1963-01-15
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Granted: 1967-01-17
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Expires: 1983-01-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Herbert
- 👤 Sterns Uldis Jekabs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/042; Y; Y10; Y10S; Y10S159/00; Y10S159/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF FORMING PURE WATER FROM RAW WATER CONTAINING DISSOLVED MAGNESIUM SALTS WITH HIGH THERMAL EFFICIENCY WHICH COMPRISES INTERMITTENTLY ENTRAINING DROPLETS OF SAID RAW WATER INTO A CONSTANTLY MOVING CURRENT OF STEAM TO FLOW SAID ENTRAINED DROPLETS THROUGH A TUBE IN A SPRAY TYPE EVAPORATOR, HEATING SAID TUBE TO EVAPORATE SAID DROPLETS, REMOVING THE RESULTING EVAPORANT FROM THE RESULTING HEAVY LIQUOR, CONDENSING SAID EVAPORANT TO FORM
Claim 2
Independent Claim
67 words
A METHOD OF FORMING PURE WATER FROM RAW WATER CONTAINING DISSOLVED MAGNESIUM SALTS WITH HIGH THERMAL EFFICIENCY WHICH COMPRISES INTERMITTENTLY ENTRAINING DROPLETS OF SAID RAW WATER INTO A CONSTANTLY MOVING CURRENT OF STEAM TO FLOW SAID ENTRAINED DROPLETS THROUGH A TUBE IN A SPRAY TYPE EVAPORATOR, HEATING SAID TUBE TO EVAPORATE SAID DROPLETS, REMOVING THE RESULTING EVAPORANT FROM THE RESULTING HEAVY LIQUOR, CONDENSING SAID EVAPORANT TO FORM
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |