US3025229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in the method of making carbon anodes
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1959-06-03
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Granted: 1962-03-13
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Expires: 1979-06-03
Abstract
No abstract record available.
Inventors
- 👤 Clinton B Folkrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:17
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08; C25C3/12; C25C3/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF MAKING A CARBON ANODE USEFUL IN ALUMINUM REDUCTION PROCESSES WHEREIN A COKE CHARGE IS MIXED WITH A CARBONACEOUS BINDER AND BAKED AT AN ELEVATED TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES UTILIZING FOR THE COKE CHARGE CALCINED GILSONITE COKE AND MIXING SAID COKE CHARGE WITH FROM ABOUT 14.4 TO 33% BY WEIGHT OF A CARBONACEOUS BINDER.
Claim 2
Independent Claim
57 words
A METHOD OF MAKING A CARBON ANODE USEFUL IN ALUMINUM REDUCTION PROCESSES WHEREIN A COKE CHARGE IS MIXED WITH A CARBONACEOUS BINDER AND BAKED AT AN ELEVATED TEMPERATURE, THE IMPROVEMENT WHICH COMPRISES UTILIZING FOR THE COKE CHARGE CALCINED GILSONITE COKE AND MIXING SAID COKE CHARGE WITH FROM ABOUT 14.4 TO 33% BY WEIGHT OF A CARBONACEOUS BINDER.
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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |