US2367281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion system
Assignee: Standard Oil Co
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Filing: 1941-09-30
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Granted: 1945-01-16
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Expires: 1961-09-30
Abstract
No abstract record available.
Inventors
- 👤 Everett A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1881; B01J8/189; C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-01-16 | 1948-07-17 | 1949-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-16 | 1952-07-17 | 1953-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-16 | 1956-07-17 | 1957-01-16 | $7700.00 | Window Closed / Lapsed |