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US2424663A
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Removal of water from aqueous solutions
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1944-12-22
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Granted: 1947-07-29
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Expires: 1964-12-22
Abstract
No abstract record available.
Inventors
- 👤 Hermon L Mantle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/02; B01D9/04; A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979124A
Cited
US2241726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |