US2449631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil composition
Assignee: Standard Oil Development Co
•
Filing: 1945-10-18
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Granted: 1948-09-21
•
Expires: 1965-10-18
Abstract
No abstract record available.
Inventors
- 👤 John C Zimmer
- 👤 Rosen Raphael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:56
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/24; C10M2207/28; C10M2207/40; C10M2207/404; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/10; C10M2223/12; C10M2223/121; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |