Patent FR2298720A1 successfully refreshed from Google Patents.
Patent US2772212A successfully refreshed from Google Patents.
US2772212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing metals from crude oils and then hydrodesulfurizing the crude oil
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-06-30
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Granted: 1956-11-27
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Expires: 1974-06-30
Abstract
No abstract record available.
Inventors
- 👤 Wilson D Seyfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:48
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A METHOD FOR TREATING A PETROLEUM FEED STOCK TO BE HYDRODESULFURIZED IN A HYDRODESULFURIZATION ZONE IN CONTACT WITH A SULF-ACTIVE CATALYST, SAID FEED STOCK BEING SELECTED FROM THE GROUP CONSISTING OF CRUDE OILS AND CRUDE OIL FRACTIONS CONTAINING AN APPRECIABLE AMOUNT OF ASH FORMING CONSTITUENTS AND ACID CONSTITUENTS, INCLUDING ACID CONSTITUETS SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC ACIDS AND NAPHTHENIC ACID SALTS, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF WATER WASHING SAID FEED STOCK IN SEQUENCE IN A PLURALITY OF WATER WASHING ZONES WITH FRESH WATER IN EACH OF SAID ZONES TO REMOVE ASH FORMING CONSTITUENTS THEREFROM, AND CONTACTING SAID WATER WASHED FEED STOCK WITH AN AQUEOUS SOLUTION CONTAINING AN ALKALI METAL HYDROXIDE, AN ALKALI METAL SALT OF SULFONIC ACID AND AN ALKALI METAL SALT OF AN INORGANIC ACID TO REMOVE ACID CONSTITUENTS THEREFROM.
Claim 2
Dependent Claim
136 words
IN A METHOD FOR TREATING A PETROLEUM FEED STOCK TO BE HYDRODESULFURIZED IN A HYDRODESULFURIZATION ZONE IN CONTACT WITH A SULF-ACTIVE CATALYST, SAID FEED STOCK BEING SELECTED FROM THE GROUP CONSISTING OF CRUDE OILS AND CRUDE OIL FRACTIONS CONTAINING AN APPRECIABLE AMOUNT OF ASH FORMING CONSTITUENTS AND ACID CONSTITUENTS, INCLUDING ACID CONSTITUETS SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC ACIDS AND NAPHTHENIC ACID SALTS, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF WATER WASHING SAID FEED STOCK IN SEQUENCE IN A PLURALITY OF WATER WASHING ZONES WITH FRESH WATER IN EACH OF SAID ZONES TO REMOVE ASH FORMING CONSTITUENTS THEREFROM, AND CONTACTING SAID WATER WASHED FEED STOCK WITH AN AQUEOUS SOLUTION CONTAINING AN ALKALI METAL HYDROXIDE, AN ALKALI METAL SALT OF SULFONIC ACID AND AN ALKALI METAL SALT OF AN INORGANIC ACID TO REMOVE ACID CONSTITUENTS THEREFROM.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |