US3723294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of asphaltene-containing hydrocarbonaceous charge stocks
Assignee: Universal Oil Products Co
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Filing: 1971-10-18
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Granted: 1973-03-27
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Expires: 1991-10-18
Abstract
Abstract A COMBINATION PROCESS FOR EFFECTING THE CONVERSION OF ASPHALTENE-CONTAINING BLACK OILS. THE CHARGE STOCK, IN ADMIXTURE WITH NON-STOICHIOMETRIC VANADIUM SULFIDE, AND UNREACTED ASPHALTENES, IS INITIALLY SUBJECTED TO SOLVENT DEASPHALTING TO PROVIDE A SOLVENT-LEAN MIXTURE OF THE VANADIUM SULFIDE AND THE PRECIPITATED ASPHALTENES. THIS MIXTURE IS SUBSEQUENTLY REACTED WITH HYDROGEN TO CONVERT THE ASPHALTENES INTO LOWER-BOILING HYDROCARBON PRODUCTS.
Inventors
- 👤 J Gatsis
- 👤 W Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/04; C10G67/0454; C10G2300/00; C10G2300/10; C10G2300/107
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |