Patent US2463434A successfully refreshed from Google Patents.
US2463434A
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US
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Treatment of fluidized solid catalyst
Assignee: Standard Oil Co
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Filing: 1944-12-22
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Granted: 1949-03-01
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Expires: 1964-12-22
Abstract
No abstract record available.
Inventors
- 👤 Rodney V Shankland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:14
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2300151A
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US2331433A
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US2377078A
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US2374151A
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US2391944A
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US2393839A
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US2414002A
Cited
US2408943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |