US3060115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon anode
Assignee: Alcoa Corp
•
Filing: 1959-10-12
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Granted: 1962-10-23
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Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Warren E Haupin
- 👤 Eugene A Maduk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:02
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A BAKED CARBON ANODE ADATPED OR USE IN AN ELECTROYTIC CELL FOR THE PRODUCTION OF ALUMINUM FROM ALUMINA DISSOLVED IN A MOLTEN ELECTROLYTE AND ADAPTED IN SUCH USE TO HAVE ITS BONNET AND UPPER SIDE SURFACES PROTRUDING ABOVE THE ELECTROLYTE WHERE THEY ARE NORMALLY EXPOSED TO AIR BURNING AND ITS LOWER PORTION SUBSMERGED IN THE ELECTROLYTE, SAID ANODE HAVING, OVER ITS BONNER AND UPPER SIDE SURFACES, A SUBSTANTIALLY AIRTIGHT SHEATH COMPRISED OF ALUMINUM FOIL 0.001 TO 0.006 INCH IN THICKNESS TIGHTLY AND INTIMATELY BONDED TO THE AFORESAID SURFACES BY AN AIR-EXCLUDING STRATUM OF HIGH TEMPERATURE RESISTANT ADHESIVE, SAID ANODE WHEN USED IN AN ELECTROLYTIC CELL AS AFORESAID BEING CHARACTERIZED BY BEING SO PROTECTED BY SAID SHEATH AGAINST AIR BURNING AS TO OBVIATE THE NEED FOR MAINTAINING THE CONVENTIONAL ALUMINA BLANKET OVER ITS UPPER SIDE SURFACES AND PERMIT INCREASED CURRENT INPUT THERETHROUGH TO THE CELL WITH CONSEQUENT INCREASED ALUMINUM PRODUCTION FROM THE CELL.
Claim 2
Dependent Claim
152 words
A BAKED CARBON ANODE ADATPED OR USE IN AN ELECTROYTIC CELL FOR THE PRODUCTION OF ALUMINUM FROM ALUMINA DISSOLVED IN A MOLTEN ELECTROLYTE AND ADAPTED IN SUCH USE TO HAVE ITS BONNET AND UPPER SIDE SURFACES PROTRUDING ABOVE THE ELECTROLYTE WHERE THEY ARE NORMALLY EXPOSED TO AIR BURNING AND ITS LOWER PORTION SUBSMERGED IN THE ELECTROLYTE, SAID ANODE HAVING, OVER ITS BONNER AND UPPER SIDE SURFACES, A SUBSTANTIALLY AIRTIGHT SHEATH COMPRISED OF ALUMINUM FOIL 0.001 TO 0.006 INCH IN THICKNESS TIGHTLY AND INTIMATELY BONDED TO THE AFORESAID SURFACES BY AN AIR-EXCLUDING STRATUM OF HIGH TEMPERATURE RESISTANT ADHESIVE, SAID ANODE WHEN USED IN AN ELECTROLYTIC CELL AS AFORESAID BEING CHARACTERIZED BY BEING SO PROTECTED BY SAID SHEATH AGAINST AIR BURNING AS TO OBVIATE THE NEED FOR MAINTAINING THE CONVENTIONAL ALUMINA BLANKET OVER ITS UPPER SIDE SURFACES AND PERMIT INCREASED CURRENT INPUT THERETHROUGH TO THE CELL WITH CONSEQUENT INCREASED ALUMINUM PRODUCTION FROM THE CELL.
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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |