US2761825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized coking
Assignee: Sinclair Refining Co
•
Filing: 1951-12-04
•
Granted: 1956-09-04
•
Expires: 1971-12-04
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:44
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2445328A
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US2511088A
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US2707702A
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |