US3420747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage multieffect distillation system
Assignee: AMF Inc
•
Filing: 1965-03-17
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Granted: 1969-01-07
•
Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 William R Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:16
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; Y; Y10; Y10S; Y10S159/00; Y10S159/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A MULTISTAGE MULTIEFFECT DISTILLATION SYSTEM COMPRISING A PLURALITY OF SETS OF STAGES COMPRISING DISTINCT HEAT EFFECTS HAVING OPERATIVE TEMPERATURE GRADIENTS RANGING PROGRESSIVELY FROM A HIGH TO A LOW CONDITION, CONDENSING COILS IN EACH SET OF STAGES, AND A PLURALITY OF PUMPS, THE PUMP ASSOCIATED WITH EACH LOWER TEMPERATURE SET OF STAGES PUMPING LIQUID EMERGING FROM THE LOW TEMPERATURE END OF EACH SET OF STAGES AND THROUGH THE ENDMOST CONDENSING COILS IN THE SUCCEEDING SET OF STAGES, THE PUMP ASSOCIATED WITH THE HIGHEST TEMPERATURE SET OF STAGES PUMPING LIQUID THROUGH THE REMAINING CONDENSING COILS OF THE SET OF STAGES AND THROUGH A HEAT EXCHANGER, THE NOVEL IMPROVEMENT OF PROVIDING PUMPS HAVING DIFFERENT CIRCULATION RATES.
Claim 2
Dependent Claim
114 words
IN A MULTISTAGE MULTIEFFECT DISTILLATION SYSTEM COMPRISING A PLURALITY OF SETS OF STAGES COMPRISING DISTINCT HEAT EFFECTS HAVING OPERATIVE TEMPERATURE GRADIENTS RANGING PROGRESSIVELY FROM A HIGH TO A LOW CONDITION, CONDENSING COILS IN EACH SET OF STAGES, AND A PLURALITY OF PUMPS, THE PUMP ASSOCIATED WITH EACH LOWER TEMPERATURE SET OF STAGES PUMPING LIQUID EMERGING FROM THE LOW TEMPERATURE END OF EACH SET OF STAGES AND THROUGH THE ENDMOST CONDENSING COILS IN THE SUCCEEDING SET OF STAGES, THE PUMP ASSOCIATED WITH THE HIGHEST TEMPERATURE SET OF STAGES PUMPING LIQUID THROUGH THE REMAINING CONDENSING COILS OF THE SET OF STAGES AND THROUGH A HEAT EXCHANGER, THE NOVEL IMPROVEMENT OF PROVIDING PUMPS HAVING DIFFERENT CIRCULATION RATES.
References Cited (Backward Citations)
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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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |