US2480652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extractive distillation of alcoholhydrocarbon mixtures
Assignee: Standard Oil Development Co
•
Filing: 1944-06-29
•
Granted: 1949-08-30
•
Expires: 1964-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Hillman
- 👤 John D Long
- 👤 Arthur K Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:21
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2366362A
Cited
US2212810A
Cited
US2288126A
Cited
GB548734A
Cited
US2377049A
Cited
US2357344A
Cited
US2362052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |