US2113774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the gasification of dust or fine-grained fuels with circulating gas
Assignee: Individual
•
Filing: 1935-11-07
•
Granted: 1938-04-12
•
Expires: 1955-11-07
Abstract
No abstract record available.
Inventors
- 👤 Schmalfeldt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:49
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-04-11 | 1941-10-11 | 1942-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-11 | 1945-10-11 | 1946-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-11 | 1949-10-11 | 1950-04-12 | $7700.00 | Window Closed / Lapsed |