US2464539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage destructive hydrogenation of petroleum oil
Assignee: Standard Oil Development Co
•
Filing: 1945-09-19
•
Granted: 1949-03-15
•
Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexis Voorhies
- 👤 Edward T Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:50
CPC Classifications
C; C10; C10G; C10G47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1995604A
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US2045795A
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US2194186A
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US2191157A
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US2215206A
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US2330098A
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US2358879A
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US2392579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |