Patent US2535622A successfully refreshed from Google Patents.
US2535622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal from its ore
Assignee: D'ETUDES POUR L'INDUSTRIE DU MAGNESIUM Ste
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Filing: 1946-07-10
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Granted: 1950-12-26
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Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 Bassereau George Jules Auguste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A METALLURGICAL FURNACE COMPRISING A CYLINDRICAL DOME HAVING A REFRACTORY LINING ADAPTED TO SERVE AS A METALLURGICAL REDUCTION CHAMBER, A PLATFORM HAVING A REFRACTORY BLOCK ADAPTED TO SUPPORT A CYLINDRICAL CHARGE AND TO COMPLETE THE REFRACTORY LINING OF THE REDUCTION CHAMBER, ELECTRODES CARRIED BY DOME AND PLATFORM, A RESISTOR CARRIED BY ONE ELECTRODE AND ADAPTED TO MAKE CONTACT WITH A CONICAL SOCKET IN THE OTHER ELECTRODE WHEN TE DOME IS CLOSED BY THE PLATFORM, MEANS TO SEAL THE JOINT BETWEEN DOME AND PLATFORM, ELEVATOR MEANS OT MOVE THE PLATFORM TO AND AWAY FROM THE DOME, AND MEANS TO SUPPLY CURRENT TO THE ELECTRODES.
Claim 2
Dependent Claim
103 words
A METALLURGICAL FURNACE COMPRISING A CYLINDRICAL DOME HAVING A REFRACTORY LINING ADAPTED TO SERVE AS A METALLURGICAL REDUCTION CHAMBER, A PLATFORM HAVING A REFRACTORY BLOCK ADAPTED TO SUPPORT A CYLINDRICAL CHARGE AND TO COMPLETE THE REFRACTORY LINING OF THE REDUCTION CHAMBER, ELECTRODES CARRIED BY DOME AND PLATFORM, A RESISTOR CARRIED BY ONE ELECTRODE AND ADAPTED TO MAKE CONTACT WITH A CONICAL SOCKET IN THE OTHER ELECTRODE WHEN TE DOME IS CLOSED BY THE PLATFORM, MEANS TO SEAL THE JOINT BETWEEN DOME AND PLATFORM, ELEVATOR MEANS OT MOVE THE PLATFORM TO AND AWAY FROM THE DOME, AND MEANS TO SUPPLY CURRENT TO THE ELECTRODES.
Claim 3
Dependent Claim
85 words
THE ART OF REDUCING AN ORE OF A METAL WHICH IS OBTAINED AT REDUCING TEMPERATURE AS A VAPOR THAT INCLUDES THE STEPS OF CONSTRUCTING FROM THE ORE AND A REDUCING AGENT A STRUCTURE SUBSTANTIALLY FREE FROM VOIDS HAVING ITS ORE-CONTAINING PARTS SUBSTANTIALLY EQUIDISTANT FROM A LINEAR SOURCE OF HEAT HEATING SAID STRUCTURE BY A SOURCE OF SUFFICIENT INTENSITY TO RAISE THE ORE TO REDUCING TEMPERATURE AND AT SUCH A DISTANCE THEREFROM THAT THE TEMPERATURE FALLS WITHIN THE STRUCTURE AT A GRADIENT THAT IS SUBSTANTIALY CONSTANT.
Claim 4
Dependent Claim
85 words
THE ART OF REDUCING AN ORE OF A METAL WHICH IS OBTAINED AT REDUCING TEMPERATURE AS A VAPOR THAT INCLUDES THE STEPS OF CONSTRUCTING FROM THE ORE AND A REDUCING AGENT A STRUCTURE SUBSTANTIALLY FREE FROM VOIDS HAVING ITS ORE-CONTAINING PARTS SUBSTANTIALLY EQUIDISTANT FROM A LINEAR SOURCE OF HEAT HEATING SAID STRUCTURE BY A SOURCE OF SUFFICIENT INTENSITY TO RAISE THE ORE TO REDUCING TEMPERATURE AND AT SUCH A DISTANCE THEREFROM THAT THE TEMPERATURE FALLS WITHIN THE STRUCTURE AT A GRADIENT THAT IS SUBSTANTIALY CONSTANT.
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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) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |