US2923260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification of fuels
Assignee: Union Rheinische Braunkohlen Kraftstoff AG
•
Filing: 1953-07-17
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Granted: 1960-02-02
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Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
- 👤 Rummel Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/57; C10J3/72; C10J3/74; C10J3/76; F; F23; F23J; F23J1/00; C10J2200/00; C10J2200/15; C10J2200/152; C10J2300/00; C10J2300/09; C10J2300/0953; C10J2300/0956; C10J2300/0959; F23J2700/00; F23J2700/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1866404A
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US2058051A
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US2357303A
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US2357302A
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US2515545A
Cited
US2380169A
Cited
US2465464A
Cited
US2482417A
Cited
US2770536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |