US2446159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of alcohol from hydrolyzed mixtures of alkyl sulfates and sulfuric acid
Assignee: Standard Oil Development Co
•
Filing: 1944-11-10
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Granted: 1948-07-27
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Expires: 1964-11-10
Abstract
No abstract record available.
Inventors
- 👤 Henry O Mottern
- 👤 Francis M Archibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04; C07C29/05; C07C29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625108A
Cited
US2080064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |