US3234008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum production
Assignee: Individual
•
Filing: 1962-05-04
•
Granted: 1966-02-08
•
Expires: 1982-05-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:32
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0053; C22B21/0061; C22B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS OF PRODUCING AND RECOVERING ALUMINUM FROM OXIDIC ALUMINUM MATERIAL WHICH COMPRISES PROVIDING A FUSION OF A MIXTURE OF THE OXIDIC MATERIAL AND A SOLID CARBONACEOUS REDUCING AGENT, REDUCING ALUMINUM FROM THE OXIDIC MATERIAL BY ELECTROTHERMAL REDUCTION, PROVIDING BENEATH THE FUSION A BODY OF MOLTEN HEAVY METAL ALUMINUM ALLOY WHICH ALLOY IS HEAVIER THAN THE FUSION AND ON WHICH THE FUSION FLOATS, PROVIDING A BODY OF AN ALLOY OF LEAD AND ALUMINUM AND CIRCULATING THE LEAD ALLOY INTO CONTACT WITH THE HEAVY METAL ALUMINUM ALLOY ON WHICH THE FUSION FLOATS, SAID HEAVY METAL ALUMINUM ALLOY BEING SUFFICIENTLY HOT THAT THE LEAD ALLOY HAS THE CAPACITY OF DISSOLVING A RELATIVELY HIGH PERCENTAGE OF ALUMINUM, CIR-
Claim 2
Dependent Claim
115 words
THE PROCESS OF PRODUCING AND RECOVERING ALUMINUM FROM OXIDIC ALUMINUM MATERIAL WHICH COMPRISES PROVIDING A FUSION OF A MIXTURE OF THE OXIDIC MATERIAL AND A SOLID CARBONACEOUS REDUCING AGENT, REDUCING ALUMINUM FROM THE OXIDIC MATERIAL BY ELECTROTHERMAL REDUCTION, PROVIDING BENEATH THE FUSION A BODY OF MOLTEN HEAVY METAL ALUMINUM ALLOY WHICH ALLOY IS HEAVIER THAN THE FUSION AND ON WHICH THE FUSION FLOATS, PROVIDING A BODY OF AN ALLOY OF LEAD AND ALUMINUM AND CIRCULATING THE LEAD ALLOY INTO CONTACT WITH THE HEAVY METAL ALUMINUM ALLOY ON WHICH THE FUSION FLOATS, SAID HEAVY METAL ALUMINUM ALLOY BEING SUFFICIENTLY HOT THAT THE LEAD ALLOY HAS THE CAPACITY OF DISSOLVING A RELATIVELY HIGH PERCENTAGE OF ALUMINUM, CIR-
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |