Patent US2458487A successfully refreshed from Google Patents.
US2458487A
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Method and apparatus for conducting the regeneration of a moving bed catalyst
Assignee: ExxonMobil Oil Corp
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Filing: 1944-05-24
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Granted: 1949-01-04
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Expires: 1964-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:47
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1155402A
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US1288438A
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DE564870C
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US1949427A
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US2330710A
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US2320562A
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US2344449A
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US2410309A
Cited
US2409596A
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US2418673A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |