US3702819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coking heavy hydrocarbons in a single vessel
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-10-15
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Granted: 1972-11-14
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Expires: 1990-10-15
Abstract
Abstract PROCESS FOR PRODUCING COKE AND GASEOUS HYDROCARBONS WHEREIN HEAVY CARBONACEOUS MATERIAL IS FED INTO A COKING ZONE WHICH IS HEATED BY HOT GASES FROM A GASIFYING ZONE AND BY HOT PARTICLES FROM A STRIPPING ZONE.
Inventors
- 👤 William J Metrailer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:46
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G9/00; C10G9/28; C10G9/32
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) | 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 |