Patent US2667409A successfully refreshed from Google Patents.
US2667409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas producer
Assignee: Individual
•
Filing: 1950-10-19
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Granted: 1954-01-26
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Expires: 1970-10-19
Abstract
No abstract record available.
Inventors
- 👤 Hubmann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:30
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/30; C10J3/34; C10J3/40; C10J3/42; C10J3/72; C10J3/74; C10J3/76; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0916; C10J2300/092; C10J2300/093; C10J2300/0943; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0959; C10J2300/0973; C10J2300/0976
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A GAS PRODUCER FOR THE GASIFICATION OF SOLID FUEL, WHICH COMPRISES A VERTICAL, CYCLINDRICAL SHAFT FURNACE HAVING A ROTATAOLE CENTGER SHAFT, A COMBUSTION ZONE FOR SUCH FUEL DEFINED IN SAID FURNACE WITH SAID ROTATABLE CENTER SHAFT EXTENDING THERETHROUGH, A GRATE MOUNTED FOR ROTATION WITH SAID SAHFT POSITIONED AT THE LOWER END OF THE COMBUSTION ZONE, A FUEL HOLDING RECEPTACLE POSITIONED WITHIN SAID FURNACE ABOVE SAID COMBUSTION ZONE WITH AT LEAST THE BOTTOM PORTION THEREOF CONNECTED TO SAID SHAFT FOR ROTATION THEREWITH, THE BOTTOM OF SAID RECEPTACLE DEFINING AT LEAST ONE OPENING THERETHROUGH IN SPACED RELATIONSHIP TO THE AXIS OF SAID ROTATABLE CENTER SHAFT FOR THE DISCHARGE OF FUEL, AND MEANS FOR ROTATING SAID SHAFT.
Claim 2
Dependent Claim
114 words
A GAS PRODUCER FOR THE GASIFICATION OF SOLID FUEL, WHICH COMPRISES A VERTICAL, CYCLINDRICAL SHAFT FURNACE HAVING A ROTATAOLE CENTGER SHAFT, A COMBUSTION ZONE FOR SUCH FUEL DEFINED IN SAID FURNACE WITH SAID ROTATABLE CENTER SHAFT EXTENDING THERETHROUGH, A GRATE MOUNTED FOR ROTATION WITH SAID SAHFT POSITIONED AT THE LOWER END OF THE COMBUSTION ZONE, A FUEL HOLDING RECEPTACLE POSITIONED WITHIN SAID FURNACE ABOVE SAID COMBUSTION ZONE WITH AT LEAST THE BOTTOM PORTION THEREOF CONNECTED TO SAID SHAFT FOR ROTATION THEREWITH, THE BOTTOM OF SAID RECEPTACLE DEFINING AT LEAST ONE OPENING THERETHROUGH IN SPACED RELATIONSHIP TO THE AXIS OF SAID ROTATABLE CENTER SHAFT FOR THE DISCHARGE OF FUEL, AND MEANS FOR ROTATING SAID SHAFT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |