US2373030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ethyl benzene
Assignee: Standard Oil Development Co
•
Filing: 1941-07-12
•
Granted: 1945-04-03
•
Expires: 1961-07-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles N Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:57
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/11; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-04-02 | 1948-10-02 | 1949-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-02 | 1952-10-02 | 1953-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-02 | 1956-10-02 | 1957-04-03 | $7700.00 | Window Closed / Lapsed |