US2490336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for conversion of petroleum hydrocarbons
Assignee: ExxonMobil Oil Corp
•
Filing: 1945-11-17
•
Granted: 1949-12-06
•
Expires: 1965-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John A Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:39
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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US2161974A
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US2325136A
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US2403375A
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US2377512A
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US2409476A
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US2325611A
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US2379408A
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US2341193A
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US2429161A
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US2374151A
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US2394651A
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US2441170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |