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Patent US2611737A successfully refreshed from Google Patents.
US2611737A
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Process for the preparation of hydrocarbon cracking stock for catalytic cracking
Assignee: Sinclair Refining Co
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Filing: 1949-02-09
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Granted: 1952-09-23
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Expires: 1969-02-09
Abstract
No abstract record available.
Inventors
- 👤 Virgil A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:57
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2166176A
Cited
US2360349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |