US2488032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion of hydrocarbons and apparatus therefor
Assignee: Standard Oil Co
•
Filing: 1941-05-10
•
Granted: 1949-11-15
•
Expires: 1961-05-10
Abstract
No abstract record available.
Inventors
- 👤 Everett A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1845; B01J8/1863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2340878A
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US2303047A
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US2273076A
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US2302209A
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US2360787A
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US2451804A
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US2347682A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |