Patent US2431499A successfully refreshed from Google Patents.
US2431499A
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Settling catalysts from oil having an inert gas thereabove
Assignee: Standard Oil Development Co
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Filing: 1944-08-21
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Granted: 1947-11-25
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Expires: 1964-08-21
Abstract
No abstract record available.
Inventors
- 👤 Jewell S Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:10
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159044A
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US1686203A
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US1762585A
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US2165820A
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US2125722A
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US2277053A
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US2307154A
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US2343836A
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US2349787A
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US2355875A
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US2384967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |