US3729383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash evaporator structure
Assignee: Aqua Chem Inc
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Filing: 1966-01-07
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Granted: 1973-04-24
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Expires: 1986-01-07
Abstract
Abstract A horizontally arranged multistage flash evaporator wherein a tubular vessel is divided into a plurality of flash chambers by transverse partitions in which the partitions at their lower end provide a passage for feedwater from chamber to chamber, and in which means are provided for controlling the flow of feedwater between chambers to maintain a desired level of feedwater liquid to effect a water seal between chambers.
Inventors
- 👤 R Goeldner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:05
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/06; B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; Y; Y10; Y10T; Y10T137/00; Y10T137/2931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |