US2959538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization of whole crudes
Assignee: Standard Vacuum Oil Co
•
Filing: 1956-11-27
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Granted: 1960-11-08
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Expires: 1976-11-27
Abstract
No abstract record available.
Inventors
- 👤 Weikart John
- 👤 James D Bushnell
- 👤 George D Ward
- 👤 Robert S Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:42
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
94 words
A PROCESS FOR HYDRODESULFURIZING A WIDE BOILING WHOLE CRUDE PETROLEUM OIL FEED CONTAINING NAPHTHA, KEROSENE AND DIESEL OIL FRACTIONS WHICH COMPRISES THE STEPS OF HEATING THE WHOLE CRUDE FEED, FLASHING THE HEATED FEED AT SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF HYDROGEN, PASSING ALL OF THE RESULTANT VAPORS OF THE DIESEL OIL FRACTION AND LIGHTER TOGETHER WITH GASEOUS HYDROGEN DIRECTLY TO A HYDROFINING ZONE, HYDROFINING THE TOTAL VAPORS IN THE HYDROFINING ZONE, AND FRACTIONATING THE HYDROFINED VAPORS AND GASES TO SEPARATE DESIRED PRODUCTS, THE VARIOUS STEPS AFTER HEATING BEING AT SUBSTANTIALLY THE SAME SUPERATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
94 words
A PROCESS FOR HYDRODESULFURIZING A WIDE BOILING WHOLE CRUDE PETROLEUM OIL FEED CONTAINING NAPHTHA, KEROSENE AND DIESEL OIL FRACTIONS WHICH COMPRISES THE STEPS OF HEATING THE WHOLE CRUDE FEED, FLASHING THE HEATED FEED AT SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF HYDROGEN, PASSING ALL OF THE RESULTANT VAPORS OF THE DIESEL OIL FRACTION AND LIGHTER TOGETHER WITH GASEOUS HYDROGEN DIRECTLY TO A HYDROFINING ZONE, HYDROFINING THE TOTAL VAPORS IN THE HYDROFINING ZONE, AND FRACTIONATING THE HYDROFINED VAPORS AND GASES TO SEPARATE DESIRED PRODUCTS, THE VARIOUS STEPS AFTER HEATING BEING AT SUBSTANTIALLY THE SAME SUPERATMOSPHERIC PRESSURE.
Claim 3
Dependent Claim
32 words
THE PROCESS OF CLAIM 1 INCLUDING THE ADDITIONAL STEP OF CONTACTING THE EFFLUENT GASES AND VAPORS FROM THE HYDROFINING STEP WITH ZINC OXIDE TO REMOVE HYDROGEN SULFIDE PRIOR TO THE FRACTIONATION STEP.
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |