US3506745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of eliminating puffing in the manufacture of electrodes from puffing petroleum coke
Assignee: GREAT LAKES CARBON CORP
•
Filing: 1969-05-29
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Granted: 1970-04-14
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Expires: 1989-05-29
Abstract
No abstract record available.
Inventors
- 👤 Leslie H Juel
- 👤 Robert W Rosene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/08; H05B7/085; C; C01; C01B; C01B32/00; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA664517A
Cited
US2522766A
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US2814076A
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US3158566A
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US3321327A
Cited
US3338993A
Cited
US3369871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |