US2876196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing petroleum fractions with platinum
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-02-25
•
Granted: 1959-03-03
•
Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 John P Thorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:45
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF DISULFURIZING A PETROLEUM FRACTION THAT BOILS WITHIN THE RANGE OF 100* TO 450*F. AND THAT CONTAINS LESS THAN ABOUT 0.3 WT. PERCENT SULFUR WHICH COMPRISES PARTIALLY VAPORIZING THE FRACTION AND PASSING THE PARTIALLY VAPORIZED FRACTION THROUGH A BED OF FINELY DIVIDED PLATINUM WHICH IS IMPREGNATED ON A SUITABLE CARRIER, MAINTAINING THE BED AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300* TO 500*F. AND A PRESSURE WITHIN THE RANGE FROM ABOUT ATMOSPHERIC TO 100 P. S. I. G. AND PASSING SAID FRACTION THROUGH SAID BED UNTIL SAID BED CONTAINS NO MORE THAN ABOUT 2 ATOMS OF SULFUR PER ATOM OF PLATINUM, SAID METHOD BEING CONDUCTED IN A MANNER THAT EXCLUDES THE ADDITION OF HYDROGEN TO THE REACTION, SO THAT ESSENTIALLY THE SOLE REACTANTS INVOLVED IN THE DESULFURIZING REACTION CONSIST OF THE PLATINUM AND THE SULFUR COMPOUNDS AND HYDROCARBONS IN THE SAID PETROLEUM FRACTION.
Claim 2
Independent Claim
146 words
A METHOD OF DISULFURIZING A PETROLEUM FRACTION THAT BOILS WITHIN THE RANGE OF 100* TO 450*F. AND THAT CONTAINS LESS THAN ABOUT 0.3 WT. PERCENT SULFUR WHICH COMPRISES PARTIALLY VAPORIZING THE FRACTION AND PASSING THE PARTIALLY VAPORIZED FRACTION THROUGH A BED OF FINELY DIVIDED PLATINUM WHICH IS IMPREGNATED ON A SUITABLE CARRIER, MAINTAINING THE BED AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300* TO 500*F. AND A PRESSURE WITHIN THE RANGE FROM ABOUT ATMOSPHERIC TO 100 P. S. I. G. AND PASSING SAID FRACTION THROUGH SAID BED UNTIL SAID BED CONTAINS NO MORE THAN ABOUT 2 ATOMS OF SULFUR PER ATOM OF PLATINUM, SAID METHOD BEING CONDUCTED IN A MANNER THAT EXCLUDES THE ADDITION OF HYDROGEN TO THE REACTION, SO THAT ESSENTIALLY THE SOLE REACTANTS INVOLVED IN THE DESULFURIZING REACTION CONSIST OF THE PLATINUM AND THE SULFUR COMPOUNDS AND HYDROCARBONS IN THE SAID PETROLEUM FRACTION.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |