US3594309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion and desulfurization of hydrocarbonaceous black oils
Assignee: Universal Oil Products Co
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Filing: 1968-10-28
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Granted: 1971-07-20
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Expires: 1988-10-28
Abstract
Abstract A PROCESS FOR CONVERTING SULFUROUS, HYDROCARBONACEOUS BLACK OILS INTO LOWER-BOILING, NORMALLY LIQUID HYDROCARBON PRODUCTS OF REDUCED SULFUR CONTENT. THE PROCESS INVOLVES THE INTEGRATION OF HYDROGENATIVE CRACKING AND FIXEDBED CATALYTIC DESULFURIZATION, AND IS ESPECIALLY APPLICABLE TO THOSE HYDROCARBON CHARGE STOCKS CONTAINING LESS THAN 150 P.P.M. OF METALLIC CONTAIMINANTS. THE CHARGE STOCK IS INITIALLY SUBJECTED TO FIXED-BED CATALYTIC HYDROGENATION AND DESULFURIZATION. FOLLOWING SEPARATION OF THE CATALYTIC REACTION ZONE PRODUCT EFFLUENT, A HIGH-BOILING CONCENTRATE IS THERMALLY-CRACKED IN THE PRESENCE OF DISSOLVED HYDROGEN. D R A W I N G
Inventors
- 👤 Frank Stolfa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:09
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/06; C10G49/00; C10G49/007
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |