Patent US2436486A successfully refreshed from Google Patents.
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
2026-10-26 22:30
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1984380A
Cited
US2277938A
Cited
US2290580A
Cited
US2253486A
Cited
US2296722A
Cited
US2303047A
Cited
US2271148A
Cited
US2304128A
Cited
US2327175A
Cited
US2369523A
Cited
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 |