US2979449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbothermic reduction of metal oxides
Assignee: Sheer Korman Associates Inc
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Filing: 1958-12-05
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Granted: 1961-04-11
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Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 Sheer Charles
- 👤 Korman Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; C; C22; C22B; C22B4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE PROCESS OF REDUCING THE OXIDIZED ORES OF ANY OF THE GROUP OF ELEMENTS CONSISTING OF BERYLLIUM, ALUMINUM, MAGNESIUM, CALCIUM, BARIUM, MANGANESE, TITANIUM, ZIRCONIUM, SILICON AND BORON, WHICH COMPRISES MAINTAINING A HIGH EROSION ARC WITH AN ANODE COMPRISING THE ORE TO BE REDUCED, MIXED WITH A STOICHIOMETRICAL QUANTITY OF CARBON, WHEREBY THE CONTENTS OF THE ANODE ARE REDUCED TO IONIZED ELEMENTAL FORM, AND WHEREBY AS THE VAPORS START TO COOL, THE CARBON VAPOR INCLUDED IN THE IONIZED VAPORS WILL FIX THE OXYGEN VAPOR, AND THEN RAPIDLY COOLING THE PRODUCT GASES BELOW THE TEMPERATURE AT WHICH A BACK
Claim 2
Dependent Claim
97 words
THE PROCESS OF REDUCING THE OXIDIZED ORES OF ANY OF THE GROUP OF ELEMENTS CONSISTING OF BERYLLIUM, ALUMINUM, MAGNESIUM, CALCIUM, BARIUM, MANGANESE, TITANIUM, ZIRCONIUM, SILICON AND BORON, WHICH COMPRISES MAINTAINING A HIGH EROSION ARC WITH AN ANODE COMPRISING THE ORE TO BE REDUCED, MIXED WITH A STOICHIOMETRICAL QUANTITY OF CARBON, WHEREBY THE CONTENTS OF THE ANODE ARE REDUCED TO IONIZED ELEMENTAL FORM, AND WHEREBY AS THE VAPORS START TO COOL, THE CARBON VAPOR INCLUDED IN THE IONIZED VAPORS WILL FIX THE OXYGEN VAPOR, AND THEN RAPIDLY COOLING THE PRODUCT GASES BELOW THE TEMPERATURE AT WHICH A BACK
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |