US3384448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering vanadium values from crude residua
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1965-07-23
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Granted: 1968-05-21
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Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Mason Ralph Burgess
- 👤 Hammer Glen Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:22
CPC Classifications
C; C01; C01G; C01G31/00; C01G31/04; D; D06; D06L; D06L4/00; D06L4/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR RECOVERING VANADIUM FROM 650*F.+ CRUDE RESIDUA WHICH COMPRISES (A) HEATING AN INTIMATE BLEND OF SAID RESIDUA WITH AN ORGANIC SOLVENT BOILING IN THE RANGE OF ABOUT 150 TO 800*F. ESSENTIALLY IN THE ABSENCE OF OXYGEN FOR AN AVERAGE RESIDENCE TIME OF ABOUT 0.1 TO ABOUT 6 HOURS TO FORM AN INSOLUBLE VANADIUM-CONTAINING CONCENTRATE CONTAINING A SUBSTANTIAL PORTION OF THE VANADIUM PRESENT IN SAID RESIDUA; (B) SEPARATING SAID INSOLUBLE VANADIUM-CONTAINING CONCENTRATE; (C) CONTACTING SAID CONCENTRATE WITH A HALOGEN-CONTAINING COMPOUND UNDER CONDITIONS SUITABLE FOR FRMING THE CORRESPONDING VANADIUM HALIDE; AND (D) RECOVERING SAID VANADIUM HALIDE.
Claim 2
Dependent Claim
96 words
A PROCESS FOR RECOVERING VANADIUM FROM 650*F.+ CRUDE RESIDUA WHICH COMPRISES (A) HEATING AN INTIMATE BLEND OF SAID RESIDUA WITH AN ORGANIC SOLVENT BOILING IN THE RANGE OF ABOUT 150 TO 800*F. ESSENTIALLY IN THE ABSENCE OF OXYGEN FOR AN AVERAGE RESIDENCE TIME OF ABOUT 0.1 TO ABOUT 6 HOURS TO FORM AN INSOLUBLE VANADIUM-CONTAINING CONCENTRATE CONTAINING A SUBSTANTIAL PORTION OF THE VANADIUM PRESENT IN SAID RESIDUA; (B) SEPARATING SAID INSOLUBLE VANADIUM-CONTAINING CONCENTRATE; (C) CONTACTING SAID CONCENTRATE WITH A HALOGEN-CONTAINING COMPOUND UNDER CONDITIONS SUITABLE FOR FRMING THE CORRESPONDING VANADIUM HALIDE; AND (D) RECOVERING SAID VANADIUM HALIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |