US2681301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removal of complex high molecular weight aromatic constituents from high boiling oils
Assignee: Standard Oil Development Co
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Filing: 1951-10-01
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Granted: 1954-06-15
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Expires: 1971-10-01
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Sayko
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:09
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IMPROVED PROCESS FOR THE REMOVAL OF HIGHLY AROMATIC CONSTITUENTS FROM A FEED OIL CONTAINING THE SAME WHICH COMPRISES TREATING SAID FEED OIL IN AN INITIAL STAGE AT A TEMPERATURE IN THE RANGE FROM ABOUT 300* F. TO 600* F. WITH A TREATING AGENT CONSISTING OF A HALOGEN COMPOUND SELECTED FROM THE CLASS CONSISTING OF CARBON TETRACHLORIDE AND TETRACHLOROETHANE, THEN CONTACTING SAID OIL IN A SECONDARY STAGE WITH A PRECIPITATING LIGHT HYDROCARBON SOLVENT CONTAINING FROM ABOUT 3 TO 8 CARBON ATOMS IN THE MOLECULE.
Claim 2
Dependent Claim
83 words
IMPROVED PROCESS FOR THE REMOVAL OF HIGHLY AROMATIC CONSTITUENTS FROM A FEED OIL CONTAINING THE SAME WHICH COMPRISES TREATING SAID FEED OIL IN AN INITIAL STAGE AT A TEMPERATURE IN THE RANGE FROM ABOUT 300* F. TO 600* F. WITH A TREATING AGENT CONSISTING OF A HALOGEN COMPOUND SELECTED FROM THE CLASS CONSISTING OF CARBON TETRACHLORIDE AND TETRACHLOROETHANE, THEN CONTACTING SAID OIL IN A SECONDARY STAGE WITH A PRECIPITATING LIGHT HYDROCARBON SOLVENT CONTAINING FROM ABOUT 3 TO 8 CARBON ATOMS IN THE MOLECULE.
References Cited (Backward Citations)
US2045806A
Cited
US2189844A
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US2247535A
Cited
US2378762A
Cited
US2525812A
Cited
US2528586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |