US2654664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification of carbonaceous solids
Assignee: Consolidation Coal Co
•
Filing: 1948-04-05
•
Granted: 1953-10-06
•
Expires: 1968-04-05
Abstract
No abstract record available.
Inventors
- 👤 Eric H Reichl
- 👤 Robert V Safford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:51
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/58; C10J3/60; C10J3/64; C10J3/66; C10J3/46; C10J3/466; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; Y; Y10; Y10S; Y10S48/00; Y10S48/02; Y10S48/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1924856A
Cited
GB413130A
Cited
US2420145A
Cited
US2462366A
Cited
US2482187A
Cited
US2436938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |