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US2461048A
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Method for separating aqueous azeotropic mixtures
Assignee: Compagnie de Produits Chimiques et Electrometallurgiques Alais Froges et Camargue
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Filing: 1945-04-24
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Granted: 1949-02-08
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Expires: 1965-04-24
Abstract
No abstract record available.
Inventors
- 👤 Frejacques Jean Leon Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:07
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/80; B; B01; B01D; B01D3/00; B01D3/34; B01D3/36; C07C255/00; C07C45/81; C07C45/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1350254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |