US3567791A
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Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-05-12
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Granted: 1971-03-02
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Expires: 1989-05-12
Abstract
Abstract A SEPARATION PROCESS IN WHICH AROMATICS ARE EXTRACTED FROM A FEED STREAM BY CONTACTING SAID FEED STREAM WITH A SLURRY. THE SLURRY COMPRISES A SUBSTANCE CAPABLE OF FORMING AN INSOLUBLE INCLUSION COMPOUND WITH THE AROMATIC AND A LIQUID SOLVENT. THE SOLVENT HAS THE CAPACITY TO SOLVENT-EXTRACT THE AROMATICS AND TO FURTHER PERMIT THE FORMATION OF SEPARATE LIQUID LAYERS, ONE LAYER CONTAINING PRIMARILY FEED STREAM DEPLETED IN AROMATICS, THE OTHER CONTAINING THE SOLVENT, ENRICHED IN AROMATICS AND AN INSOLUBLE INCLUSION COMPOUND.
Inventors
- 👤 Everett J Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/152
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |