Patent US3947387A successfully refreshed from Google Patents.
US3565792A
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Cyclic process for desulfurizing crude petroleum fractions with sodium
Assignee: FRANK B HASKETT
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Filing: 1968-06-07
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Granted: 1971-02-23
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Expires: 1988-06-07
Abstract
Abstract AN INTEGRATED PROCESS FOR THE DESULFURIZATION OF CRUDE OIL OR SIMILAR VIRGIN HYDROCARBON FRACTIONS WHEREIN A DISPERSION OF METALLIC SODIUM IS EMPLOYED TO REACT WITH THE SULFUR CONTAMINANTS PRESENT WITHIN SUCH CRUDE OIL TO FORM A SODIUM SULFIDE PRECIPITATE ELIMINATED FROM THE TREATED CRUDE THROUGH CENTRIFUGATION. THE INTEGRATED SYSTEM IS PROVIDED BY REACTING THE SODIUM SULFIDE PREDIPITATE WITH HYDROCHLORIC ACID TO PRODUCE SODIUM CHLORIDE WHICH AFTER RECLAMATION CAN BE EMPLOYED THROUGH ELECTROLYSIS TO PROVIDE THE NECESSARY SODIUM FOR DESULFURIZATION OF THE CRUDE OIL.
Inventors
- 👤 Frank B Haskett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/04; C10G19/00; C10G19/073; C10G29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |