US3281334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage evaporator construction
Assignee: AMF Inc
•
Filing: 1965-03-17
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Granted: 1966-10-25
•
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
2026-11-03 09:57
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/06; B01D3/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A MULTISTAGE FLASH EVAPORATOR HAVING A PLURALITY OF SUBSTANTIALLY INDENTICAL VERTICALLY ORIENTED UNITS STACKED HORIZONTALLY TOGETHER, EACH OF SAID UNITS HAVING A REAR WALL, AN OUTER WALL EXTENDING FORWARD FROM SAID REAR WALL, AN INNER WALL EXTENDING FORWARD FROM SAID REAR WALL, SAID INNER WALL DEFINING AN EVAPORATING CHAMBER AND SAID INNER AND OUTER WALLS DEFINING, BETWEEN THEM, A CONDENSING CHAMBER SURROUNDING SAID EVAPORATING CHAMBER, EACH SAID
Claim 2
Dependent Claim
67 words
A MULTISTAGE FLASH EVAPORATOR HAVING A PLURALITY OF SUBSTANTIALLY INDENTICAL VERTICALLY ORIENTED UNITS STACKED HORIZONTALLY TOGETHER, EACH OF SAID UNITS HAVING A REAR WALL, AN OUTER WALL EXTENDING FORWARD FROM SAID REAR WALL, AN INNER WALL EXTENDING FORWARD FROM SAID REAR WALL, SAID INNER WALL DEFINING AN EVAPORATING CHAMBER AND SAID INNER AND OUTER WALLS DEFINING, BETWEEN THEM, A CONDENSING CHAMBER SURROUNDING SAID EVAPORATING CHAMBER, EACH SAID
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |