US2789116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hexafluorophosphoric acid and organic sulfur compounds
Assignee: Shell Development Co
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Filing: 1952-09-22
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Granted: 1957-04-16
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Expires: 1972-09-22
Abstract
No abstract record available.
Inventors
- 👤 Bar Constantijn Leo Panthaleon
- 👤 Smithuysen Wilhelm Brezesinska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:32
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/07; C10G2400/00; C10G2400/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR DESULFURIZING A HYDROCARBON MATERIAL CONTAINING SULFUR COMPOUNDS WHICH COMPRISES CONTACTING SAID HYDROCARBON MATERIAL IN LIQUID PHASE, IN THE SUBSTANTIAL ABSENCE OF WATER AND AT A TEMPERATURE NO HIGHER THAN AMBIENT ROOM TEMPERATURE, WITH A SOLUTION OF PERFLUOROPHOSPHORIC ACID (HPF5) IN LIQUID SULFUR DIOXIDE IN PROPORTIONS TO FORM SOLID ADDUCT OF AT LEAST A PORTION OF THE SULFUR COMPOUNDS AND PERFLUOROPHOSPHERIC ACID, WHEREBY SUCH A SOLID ADDUCT IS FORMED, SEPARATING THE SOLID ADDUCT OF SULFUR COMPOUND AND PERFLUOROPHOSPHORIC ACID FROM THE HYDROCARBON MATERIAL, AND DECOMPOSING THE ADDUCT TO SEPARATE THE COMPONENTS THEREOF.
Claim 2
Dependent Claim
94 words
A PROCESS FOR DESULFURIZING A HYDROCARBON MATERIAL CONTAINING SULFUR COMPOUNDS WHICH COMPRISES CONTACTING SAID HYDROCARBON MATERIAL IN LIQUID PHASE, IN THE SUBSTANTIAL ABSENCE OF WATER AND AT A TEMPERATURE NO HIGHER THAN AMBIENT ROOM TEMPERATURE, WITH A SOLUTION OF PERFLUOROPHOSPHORIC ACID (HPF5) IN LIQUID SULFUR DIOXIDE IN PROPORTIONS TO FORM SOLID ADDUCT OF AT LEAST A PORTION OF THE SULFUR COMPOUNDS AND PERFLUOROPHOSPHERIC ACID, WHEREBY SUCH A SOLID ADDUCT IS FORMED, SEPARATING THE SOLID ADDUCT OF SULFUR COMPOUND AND PERFLUOROPHOSPHORIC ACID FROM THE HYDROCARBON MATERIAL, AND DECOMPOSING THE ADDUCT TO SEPARATE THE COMPONENTS THEREOF.
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) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |