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Patent US3524004A successfully refreshed from Google Patents.
US3524004A
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Non-metal reinforced self-baking electrode for electric furnaces
Assignee: Ohio Ferro-Alloys Corp
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Filing: 1968-12-03
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Granted: 1970-08-11
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Expires: 1988-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jack A Van Nostran
- 👤 Otis D Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:56
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05B7/085; H05B7/09; H05B7/005; H05B7/10; H05B7/107; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899667A
Cited
US1596902A
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US2458272A
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US2778865A
Cited
US3286003A
Cited
US3268633A
Cited
US3365533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |