Patent US2952589A successfully refreshed from Google Patents.
US2952589A
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Purification of aluminum
Assignee: ZIEGLER AG
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Filing: 1957-04-04
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Granted: 1960-09-13
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Expires: 1977-04-04
Abstract
No abstract record available.
Inventors
- 👤 Karl Ziegler
- 👤 Wilhelm Platz Kaiser
- 👤 Hans-Herbert Lehmkuhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:32
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C1/00; C25C1/22; C25C3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
PROCESS FOR THE PURIFICATION OF ALUMINUM WHICH COMPRISES CONTACTING THE ALUMINUM TO BE PURIFIED WITH A LOWER ALUMINUM TRIALKYL AND HYDROGEN TO THEREBY FORM A LOWER DIALKYL ALUMINUM HYDRIDE, MIXING SAID LOWER DIALKYL ALUMINUM HYDRIDE WITH AN ELECTRICALLY CONDUCTIVE COMPLEX ORGANIC ALUMINUM COMPOUND MISCIBLE THEREWITH TO THEREBY FORM AN ELECTROLYTE, PASSING AN ELECTRIC CURRENT THROUGH SAID ELECTROLYTE BETWEEN A CATHODE AND AN ANODE SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER IN AN ELECTROLYSIS CELL TO THEREBY ELECTROLYZE THE ELECTROLYTE FORMING PURE ALUMINUM AT THE CATHODE, HYDROGEN AT THE ANODE, AND AN UPPER LAYER OF ALUMINUM TRIALKYL, AND RECYCLING SAID ALUMINUM TRIALKYL AND SAID HYDROGEN FORMED AT THE ANODE FOR SAID CONTRACTING WITH THE ALUMINUM TO BE PURIFIED TO FORM SAID LOWER DIALKYL ALUMINUM HYDRIDE.
Claim 2
Dependent Claim
126 words
PROCESS FOR THE PURIFICATION OF ALUMINUM WHICH COMPRISES CONTACTING THE ALUMINUM TO BE PURIFIED WITH A LOWER ALUMINUM TRIALKYL AND HYDROGEN TO THEREBY FORM A LOWER DIALKYL ALUMINUM HYDRIDE, MIXING SAID LOWER DIALKYL ALUMINUM HYDRIDE WITH AN ELECTRICALLY CONDUCTIVE COMPLEX ORGANIC ALUMINUM COMPOUND MISCIBLE THEREWITH TO THEREBY FORM AN ELECTROLYTE, PASSING AN ELECTRIC CURRENT THROUGH SAID ELECTROLYTE BETWEEN A CATHODE AND AN ANODE SELECTED FROM THE GROUP CONSISTING OF SILVER AND COPPER IN AN ELECTROLYSIS CELL TO THEREBY ELECTROLYZE THE ELECTROLYTE FORMING PURE ALUMINUM AT THE CATHODE, HYDROGEN AT THE ANODE, AND AN UPPER LAYER OF ALUMINUM TRIALKYL, AND RECYCLING SAID ALUMINUM TRIALKYL AND SAID HYDROGEN FORMED AT THE ANODE FOR SAID CONTRACTING WITH THE ALUMINUM TO BE PURIFIED TO FORM SAID LOWER DIALKYL ALUMINUM HYDRIDE.
References Cited (Backward Citations)
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US1939397A
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US1911122A
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US2651608A
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US2787626A
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US2849349A
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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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |