US2489619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of normal propyl alcohol from oxygenated compounds
Assignee: Standard Oil Development Co
•
Filing: 1948-08-23
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Granted: 1949-11-29
•
Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 Carl S Carlson
- 👤 Nat C Robertson
- 👤 Carter E Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:31
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1422583A
Cited
US1568349A
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US1831425A
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US1862706A
Cited
US2140694A
Cited
US2392534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |