US2829961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing aluminum
Assignee: Alcoa Corp
•
Filing: 1955-03-14
•
Granted: 1958-04-08
•
Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Mike A Miller
- 👤 Luther M Foster
- 👤 Cole D Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:53
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PROCESS FOR PRODUCING ALUMINUM COMPRISING FORMING A SUBSTANTIALLY NON-METALLIC FUSION OF ALUMINA AND ALUMINUM CARBIDE, WHICH EXHIBIT THEREIN AN AFFINITY FOR EACH OTHER IN THE PROPORTION BY WEIGHT OF ABOUT 74:26 FOUND IN ALUMINUM OXYCARBIDE OF THE FORMULA AL4O4C, MAKING ALUMINUM CARBIDE AVAILABLE IN THE FUSION IN AN AMOUNT IN EXCESS OF THAT IN THE PROPORTION STATED AND LESS THAN THAT REQUIRED FOR THE REDUCTION OF ALL OF THE ALUMINA WITH ALUMINUM CARBIDE, EFFECTING A REACTION IN THE FUSION, AT A TEMPERATURE OF AT LEAST ABOUT 1980* C., TO PRODUCE ALUMINUM IN LIQUID PHASE, AND ACCUMULATING LIQUID PHASE ALUMINUM SO PRODUCED AS A CONSTITUENT OF A METALLIC MELT OF ALUMINUM AND ALUMINUM CARBIDE RISING OUT OF AND LYING SUPERNATANT TO THE FUSION.
Claim 2
Dependent Claim
123 words
A PROCESS FOR PRODUCING ALUMINUM COMPRISING FORMING A SUBSTANTIALLY NON-METALLIC FUSION OF ALUMINA AND ALUMINUM CARBIDE, WHICH EXHIBIT THEREIN AN AFFINITY FOR EACH OTHER IN THE PROPORTION BY WEIGHT OF ABOUT 74:26 FOUND IN ALUMINUM OXYCARBIDE OF THE FORMULA AL4O4C, MAKING ALUMINUM CARBIDE AVAILABLE IN THE FUSION IN AN AMOUNT IN EXCESS OF THAT IN THE PROPORTION STATED AND LESS THAN THAT REQUIRED FOR THE REDUCTION OF ALL OF THE ALUMINA WITH ALUMINUM CARBIDE, EFFECTING A REACTION IN THE FUSION, AT A TEMPERATURE OF AT LEAST ABOUT 1980* C., TO PRODUCE ALUMINUM IN LIQUID PHASE, AND ACCUMULATING LIQUID PHASE ALUMINUM SO PRODUCED AS A CONSTITUENT OF A METALLIC MELT OF ALUMINUM AND ALUMINUM CARBIDE RISING OUT OF AND LYING SUPERNATANT TO THE FUSION.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |