US3554830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of graphite bodies
Assignee: United Coke and Chemical Co
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Filing: 1966-12-06
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Granted: 1971-01-12
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Expires: 1986-12-06
Abstract
Abstract GRAPHITE ELECTRODES AND SIMILAR BODIES ARE MADE BY ASSEMBLING EXTRUDED LENGTHS OF GREEN CARBONACEOUS MASSES IN LENGTHWISE CONTACT TO FORM THE GREEN BODIES WHICH ARE BAKED AND GRAPHITIZED.
Inventors
- 👤 Harry L Riley
- 👤 Peter H Pinchbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C04B35/528; C04B35/532; H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05B7/085
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |