US2454467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing olefins from aromatic hydrocarbons
Assignee: Standard Oil Development Co
•
Filing: 1945-08-11
•
Granted: 1948-11-23
•
Expires: 1965-08-11
Abstract
No abstract record available.
Inventors
- 👤 Robert M Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:42
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/177
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1483835A
Cited
US1681638A
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FR668303A
Cited
GB314052A
Cited
US2029115A
Cited
US1952694A
Cited
US2200704A
Cited
US2368554A
Cited
US2380561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |