US2463872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of synthetic lubricating oil
Assignee: Standard Oil Development Co
•
Filing: 1947-03-07
•
Granted: 1949-03-08
•
Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:45
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02; C10M; C10M107/00; C10M107/02; C10M107/10; C10N; C10N2060/00; Y; Y10; Y10S; Y10S174/00; Y10S174/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2398495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |