US2469329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conducting reactions in the presence of a solid material
Assignee: ExxonMobil Oil Corp
•
Filing: 1944-10-14
•
Granted: 1949-05-03
•
Expires: 1964-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:43
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US731682A
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US2320562A
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US2362621A
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US2350644A
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US2386670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |