US2436486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage hydrocarbon cracking process
Assignee: Standard Oil Co
•
Filing: 1942-02-27
•
Granted: 1948-02-24
•
Expires: 1962-02-27
Abstract
No abstract record available.
Inventors
- 👤 Fred W Scheineman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984380A
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US2277938A
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US2303047A
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US2304128A
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US2327175A
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US2369523A
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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) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |