Patent US2465974A successfully refreshed from Google Patents.
US2465974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of an organic dinitrohydrocarbon
Assignee: Union Oil Company of California
•
Filing: 1946-01-12
•
Granted: 1949-03-29
•
Expires: 1966-01-12
Abstract
No abstract record available.
Inventors
- 👤 Clarence S Coe
- 👤 Edward C Attane
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:01
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/08; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2343256A
Cited
US2181531A
Cited
US2383603A
Cited
US702171A
Cited
GB142878A
Cited
US1956030A
Cited
US2001701A
Cited
US2168305A
Cited
US2181411A
Cited
US2256839A
Cited
GB544158A
Cited
US2378169A
Cited
US2337912A
Cited
US2394230A
Cited
US2365981A
Cited
US2385037A
Cited
US2396282A
Cited
US2401268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |