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Patent US3460907A successfully refreshed from Google Patents.
US3460907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of coke and low cte graphite from petroleum derived feed materials
Assignee: Marathon Oil Co
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Filing: 1965-07-12
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Granted: 1969-08-12
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Donald L Winsett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:59
CPC Classifications
C; C10; C10B; C10B55/00; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199759A
Cited
US2775549A
Cited
US2922755A
Cited
US3173852A
Cited
US3326796A
Cited
US3310611A
Cited
US3338817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |