US3394056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of anhydrous hci from aqueous azeotropes by plural stage distillation
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-08-31
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Granted: 1968-07-23
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Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 Nadler Murray
- 👤 Robert P Cahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:30
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/07; C01B7/0706; C01B7/0712; B; B01; B01D; B01D3/00; B01D3/34; B01D3/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1398224A
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US1892652A
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US2047611A
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US2437290A
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FR1040338A
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US2665240A
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US2886413A
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US2901407A
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US3165453A
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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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |