Patent US2847295A successfully refreshed from Google Patents.
US2847295A
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Process and apparatus for the electrothermal production of magnesium
Assignee: Knapsack AG
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Filing: 1954-12-13
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Granted: 1958-08-12
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Bretschneider Otto
- 👤 Gilcher Hedwig Moschel Geb
- 👤 Moschel Brigitte Carstense Geb
- 👤 Moschel Renate
- 👤 Moschel Albrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:31
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE ELECTRO-THERMAL PRODUCTION OF MAGNESIUM WHICH COMPRISES THE STEPS OF INTRODUCING A FINELY-DIVIDED SUBSTRATE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE, BURNED FOLOMITE AND SERPENTINE TOGETHER WITH A FINELY-DIVIDED METALLIC REDUCING AGENT, THE METALLIC REDUCING AGENT YIELDING UNDER REDUCING CONDITIONS NON-VOLATILE REACTION PRODUCTS, HEATING THE MATERIAL TO REDUCTION TEMPERATURE AND EVOLVING MAGNESIUM VAPOR, CONDENSING A MAJOR PORTION OF THE MAGNESIUM
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE ELECTRO-THERMAL PRODUCTION OF MAGNESIUM WHICH COMPRISES THE STEPS OF INTRODUCING A FINELY-DIVIDED SUBSTRATE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE, BURNED FOLOMITE AND SERPENTINE TOGETHER WITH A FINELY-DIVIDED METALLIC REDUCING AGENT, THE METALLIC REDUCING AGENT YIELDING UNDER REDUCING CONDITIONS NON-VOLATILE REACTION PRODUCTS, HEATING THE MATERIAL TO REDUCTION TEMPERATURE AND EVOLVING MAGNESIUM VAPOR, CONDENSING A MAJOR PORTION OF THE MAGNESIUM
References Cited (Backward Citations)
US1311378A
Cited
US2165742A
Cited
US2432111A
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US2570232A
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US2550684A
Cited
US2724644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |