US2438468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil composition
Assignee: Standard Oil Development Co
•
Filing: 1942-12-31
•
Granted: 1948-03-23
•
Expires: 1962-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jones I Wasson
- 👤 Carroll J Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/14; C10M2207/142; C10M2207/40; C10M2207/404; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2263664A
Cited
US2031930A
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US2216752A
Cited
US2114812A
Cited
US2114832A
Cited
GB483306A
Cited
US2291499A
Cited
US2263663A
Cited
US2270577A
Cited
US2285752A
Cited
US2335017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |