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US2422262A
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Apparatus for contacting solid particles with gaseous fluids
Assignee: Standard Oil Development Co
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Filing: 1944-08-02
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Granted: 1947-06-17
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Expires: 1964-08-02
Abstract
No abstract record available.
Inventors
- 👤 Barrett B Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2253486A
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US2359310A
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US2337684A
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US2304128A
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US2394814A
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US2367694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |