Patent US2458960A successfully refreshed from Google Patents.
US2458960A
Expired / Lapsed
US
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Apparatus for reactions requiring short contact time
Assignee: Standard Oil Development Co
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Filing: 1942-11-28
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Granted: 1949-01-11
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Expires: 1962-11-28
Abstract
No abstract record available.
Inventors
- 👤 Bruno E Roetheli
- 👤 Walter G Scharmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:33
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J8/005; B01J8/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1626664A
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US2247097A
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US2268094A
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US2303047A
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US2311564A
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US2337684A
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US2373008A
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US2304128A
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US2327175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |