US2454466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of fluid catalysts with cooling of flue gases by water injection
Assignee: Standard Oil Development Co
•
Filing: 1944-02-03
•
Granted: 1948-11-23
•
Expires: 1964-02-03
Abstract
No abstract record available.
Inventors
- 👤 Roi Earl J Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1845; B01J8/1863
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1446857A
Cited
US2127009A
Cited
GB544063A
Cited
US2374660A
Cited
US2311978A
Cited
US2356680A
Cited
US2311564A
Cited
US2320562A
Cited
US2309034A
Cited
US2367351A
Cited
US2379734A
Cited
US2393839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |