US2840512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of furnace oil by hydrotreating to remove sulfur and gum
Assignee: MW Kellogg Co
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Filing: 1955-09-29
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Granted: 1958-06-24
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Expires: 1975-09-29
Abstract
No abstract record available.
Inventors
- 👤 William P Burton
- 👤 Charles E Slyngstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A PROCESS FOR DESULFURIZING AND STABILIZING A FURNANCE OIL CONTAINING GUM FORMING CONSTITUENTS AND SULFUR COMPOUNDS WITHOUT CHANGING THE COLOR THEREOF WHICH COMPRISES CONTACTING THE FURNACE OIL WITH A COBALT MOLYBDATE CATALYST UNDER SUITABLE CONDITIONS INCLUDING A TEMPERATURE OF AT LEAST ABOUT 550*F. AND NOT HIGHER THAN ABOUT 700*F., A WEIGHT SPACE VELOCITY OF ABOUT 5 TO ABOUT 20, A PRESSURE OF ABOUT 150 TO ABOUT 1500 P. S. I. G. AND IN THE PRESENCE OF ADDED HYDROGEN IN THE AMOUNT OF ABOUT 300 TO ABOUT 2000 S. C. F. B.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |