Patent US252430A successfully refreshed from Google Patents.
Patent US2939829A successfully refreshed from Google Patents.
US2939829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1958-01-15
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Granted: 1960-06-07
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Expires: 1978-01-15
Abstract
No abstract record available.
Inventors
- 👤 Allen George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:29
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN ELECTROLYTIC REDUCTION CELL HAVING A LINING WHICH DEFINES A CAVITY ADAPTED TO CONTAIN AN ELECTROLYTE, AT LEAST ONE PREBAKE ANODE AND AT LEAST ONE BUS CONDUCTOR POSITIONED ABOVE SAID CAVITY IN COMBINATION WITH AT LEAST ONE ANODE SUSPENSION BAR AFFIXED AT ONE END TO SAID ANODE AND ADAPTED TO BE CLAMPED AT A POINT REMOVED FROM SAID ANODE TO SAID BUS CONDUCTOR, SAID ANODE SUSPENSION BAR COMPRISING A MAJOR PORTION OF COPPER ADJACENT SAID ANODE AND A MINOR PORTION OF STEEL AT THE END OF SAID ANODE SUSPENSION BAR FURTHEST REMOVED FROM SAID ANODE, SAID PORTIONS BEING IN ABUTTING HIGH STRENGTH BOND RELATIONSHIP, SAID MINOR PORTION BEING PROVIDED WITH AN OPENING THEREIN NEAR THE END OPPOSITE THE END OF SAID MINOR PORTION IN ABUTTING RELATIONSHIP WITH SAID MAJOR PORTION.
Claim 2
Dependent Claim
130 words
AN ELECTROLYTIC REDUCTION CELL HAVING A LINING WHICH DEFINES A CAVITY ADAPTED TO CONTAIN AN ELECTROLYTE, AT LEAST ONE PREBAKE ANODE AND AT LEAST ONE BUS CONDUCTOR POSITIONED ABOVE SAID CAVITY IN COMBINATION WITH AT LEAST ONE ANODE SUSPENSION BAR AFFIXED AT ONE END TO SAID ANODE AND ADAPTED TO BE CLAMPED AT A POINT REMOVED FROM SAID ANODE TO SAID BUS CONDUCTOR, SAID ANODE SUSPENSION BAR COMPRISING A MAJOR PORTION OF COPPER ADJACENT SAID ANODE AND A MINOR PORTION OF STEEL AT THE END OF SAID ANODE SUSPENSION BAR FURTHEST REMOVED FROM SAID ANODE, SAID PORTIONS BEING IN ABUTTING HIGH STRENGTH BOND RELATIONSHIP, SAID MINOR PORTION BEING PROVIDED WITH AN OPENING THEREIN NEAR THE END OPPOSITE THE END OF SAID MINOR PORTION IN ABUTTING RELATIONSHIP WITH SAID MAJOR PORTION.
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |