Patent US2488718A successfully refreshed from Google Patents.
US2488718A
Expired / Lapsed
US
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Process for the removal of catalyst impurities from regenerated catalyst
Assignee: Standard Oil Development Co
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Filing: 1947-07-12
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Granted: 1949-11-22
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Expires: 1967-07-12
Abstract
No abstract record available.
Inventors
- 👤 Robert A Forrester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:27
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G11/182; B; B01; B01J; B01J38/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848723A
Cited
US1430454A
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DE115333C
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US1785464A
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US2246900A
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US2380731A
Cited
US2414736A
Cited
US2407701A
Cited
US2430724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |