US2891004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removal of metal contaminants from high boiling oils by use of boron compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-10-19
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Granted: 1959-06-16
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Expires: 1975-10-19
Abstract
No abstract record available.
Inventors
- 👤 Mattox William Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:23
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN IMPROVED PROCESS FOR THE REMOVAL OF IRON, NICKEL AND VANADIUM CONTAMINANTS FROM A HYDROCARBON OIL BOILING ABOVE ABOUT 750* F. WHICH COMPRISES CONTACTING SAID OIL WITH FROM ABOUT 0.5 TO ABOUT 3% BY WEIGHT, BASED UPON THE OIL, OF A BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORON OXIDE AN D BORIC ACID AT A TEMPERATURE ABOVE ABOUT 250* F.; SEPARATELY RECOVERING A BORON COMPLEX AND DECONTAMINATED OIL; DECOMPOSING SAID BORON COMPLEX WITH STEAM; AND RECOVERING AT LEAST A PORTION OF SAID BORON COMPOUND.
Claim 2
Dependent Claim
86 words
AN IMPROVED PROCESS FOR THE REMOVAL OF IRON, NICKEL AND VANADIUM CONTAMINANTS FROM A HYDROCARBON OIL BOILING ABOVE ABOUT 750* F. WHICH COMPRISES CONTACTING SAID OIL WITH FROM ABOUT 0.5 TO ABOUT 3% BY WEIGHT, BASED UPON THE OIL, OF A BORON COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORON OXIDE AN D BORIC ACID AT A TEMPERATURE ABOVE ABOUT 250* F.; SEPARATELY RECOVERING A BORON COMPLEX AND DECONTAMINATED OIL; DECOMPOSING SAID BORON COMPLEX WITH STEAM; AND RECOVERING AT LEAST A PORTION OF SAID BORON COMPOUND.
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) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |