US2456148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping of spent catalyst in hydrocarbon conversion processes
Assignee: Universal Oil Products Co
•
Filing: 1945-05-25
•
Granted: 1948-12-14
•
Expires: 1965-05-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Davis Read
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
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)
US1972948A
Cited
US1908338A
Cited
US2057402A
Cited
US2348156A
Cited
US2300240A
Cited
US2259486A
Cited
US2303717A
Cited
US2333851A
Cited
US2302209A
Cited
US2385826A
Cited
US2391944A
Cited
US2414002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |