US2434843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hydrocarbon conversion in presence of particle form catalysts
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-01-29
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Granted: 1948-01-20
•
Expires: 1966-01-29
Abstract
No abstract record available.
Inventors
- 👤 Frank C Fahnestock
- 👤 Ullrich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:23
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1030653A
Cited
US2290580A
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US2350730A
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US2362270A
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US2325611A
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US2393893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |