Patent US2993844A successfully refreshed from Google Patents.
US2993844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-stage flash evaporator
Assignee: Chicago Bridge and Iron Co
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Filing: 1958-05-13
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Granted: 1961-07-25
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Charles P Nilan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:31
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A MULTI-STAGE FLASH HEATER FOR HEATING A FIRST LIQUOR WITH VAPOR EVAPORATED FROM A SECOND LIQUOR, COMPRISING IN COMBINATION, AN ELONGATED CASING HAVING A PAIR OF SPACED TUBE SHEETS MOUNTED THEREIN, THE PORTION OF SAID CASING BETWEEN SAID TUBE SHEETS, BEING RADIALLY DIVIDED INTO A SERIES OF COMPARTMENTS ADAPTED TO BE MAINTAINED AT SUCCESSIVELY LOWER PRESSURES, BANKS OF HEAT-EXCHANGE TUBES MOUNTED AT THEIR ENDS IN SAID SPACED TUBE SHEETS AND LOCATED IN SAID COMPARTMENTS, PARTITIONS AT THE OPPOSITE ENDS OF SAID BANKS OF TUBES FOR DIRECTING THE FLOW OF SAID FIRST LIQUOR FROM THE TUBES OF ONE BANK TO THE ADJACENT ENDS OF THE TUBES OF ANOTHER BANK, WHEREBY
Claim 2
Dependent Claim
109 words
A MULTI-STAGE FLASH HEATER FOR HEATING A FIRST LIQUOR WITH VAPOR EVAPORATED FROM A SECOND LIQUOR, COMPRISING IN COMBINATION, AN ELONGATED CASING HAVING A PAIR OF SPACED TUBE SHEETS MOUNTED THEREIN, THE PORTION OF SAID CASING BETWEEN SAID TUBE SHEETS, BEING RADIALLY DIVIDED INTO A SERIES OF COMPARTMENTS ADAPTED TO BE MAINTAINED AT SUCCESSIVELY LOWER PRESSURES, BANKS OF HEAT-EXCHANGE TUBES MOUNTED AT THEIR ENDS IN SAID SPACED TUBE SHEETS AND LOCATED IN SAID COMPARTMENTS, PARTITIONS AT THE OPPOSITE ENDS OF SAID BANKS OF TUBES FOR DIRECTING THE FLOW OF SAID FIRST LIQUOR FROM THE TUBES OF ONE BANK TO THE ADJACENT ENDS OF THE TUBES OF ANOTHER BANK, WHEREBY
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |