US2456796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon coking
Assignee: Lummus Technology LLC
•
Filing: 1944-09-28
•
Granted: 1948-12-21
•
Expires: 1964-09-28
Abstract
No abstract record available.
Inventors
- 👤 Schutte August Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1869949A
Cited
AT106719B
Cited
AU226326A
Cited
US1798995A
Cited
US1911836A
Cited
US2168207A
Cited
US2334598A
Cited
US2362270A
Cited
US2366057A
Cited
US2366055A
Cited
US2334341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |