US2111579A
Expired / Lapsed
US
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Gasification of fine-grained solid fuels
Assignee: IG Farbenindustrie AG
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Filing: 1934-06-27
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Granted: 1938-03-22
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Expires: 1954-06-27
Abstract
No abstract record available.
Inventors
- 👤 Winkler Fritz
- 👤 Linckh Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/482; C10J3/52; C10J3/523; C10J2200/00; C10J2200/15; C10J2200/158; 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) | 1941-03-21 | 1941-09-20 | 1942-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-03-21 | 1945-09-20 | 1946-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-03-21 | 1949-09-20 | 1950-03-22 | $7700.00 | Window Closed / Lapsed |