Patent US5315150A successfully refreshed from Google Patents.
Patent US3702816A successfully refreshed from Google Patents.
US3702816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low sulfur coke from virgin residua
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-06-29
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Granted: 1972-11-14
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Expires: 1990-06-29
Abstract
Abstract THE SULFUR CONTENT OF COKE OBTAINED FROM HIGH SULFUR RESIDUA IS REDUCED BY OXIDATION WITH OR WITHOUT SUBSEQUENT HYDRODESULFERIXATION FOLLOWED BY COKING AND THE TREATING THE COKE AT 1200-1600F. UNDER HIGH PRESSURES OF 50-1000 P.S.I.G. FOR 30-60 MINUTES.
Inventors
- 👤 Fred J Buchmann
- 👤 Glen P Hamner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:24
CPC Classifications
C; C10; C10B; C10B55/00; C10L; C10L9/00; C10L9/02
Claims Analysis
Total Claims: 0
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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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |