US3114783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aromatics from hydrocarbon streams
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-08-27
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Granted: 1963-12-17
•
Expires: 1979-08-27
Abstract
No abstract record available.
Inventors
- 👤 Roger M Butler
- 👤 John A Bichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:50
CPC Classifications
C; C10; C10G; C10G7/00; C10G7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PROCESS FOR SEPERATING PARAFFINS AND AROMATICS FROM A HYDROCARBON STREAM CONTAINING C5-C8 PARAFFINS AND C6-C9 AROMATICS, THE IMPROVEMENT COMPRISING FRACTIONATING SAID HYDROCARBON STREAM AT A CUT POINT OF FROM ABOUT 150* TO ABOUT 230*F. TO REMOVE ALL THE C6 AROMATICS AND C5 AND C6 PARAFFINS THEREFROM, COUNTERCURRENTLY CONTACTING SAID C6 AROMATICS AND SAID C5 AND C6 PARAFFINS IN VAPOR PHASE WITH A LIQUID SOLVENT SELECTIVE TO AROMATICS IN AN EXTRACTIVE DISTILLATION ZONE, REMOVING FROM SAID EXTRACTIVE DISTILLATION ZONE A VAPOR RAFFINATE AND A
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR SEPERATING PARAFFINS AND AROMATICS FROM A HYDROCARBON STREAM CONTAINING C5-C8 PARAFFINS AND C6-C9 AROMATICS, THE IMPROVEMENT COMPRISING FRACTIONATING SAID HYDROCARBON STREAM AT A CUT POINT OF FROM ABOUT 150* TO ABOUT 230*F. TO REMOVE ALL THE C6 AROMATICS AND C5 AND C6 PARAFFINS THEREFROM, COUNTERCURRENTLY CONTACTING SAID C6 AROMATICS AND SAID C5 AND C6 PARAFFINS IN VAPOR PHASE WITH A LIQUID SOLVENT SELECTIVE TO AROMATICS IN AN EXTRACTIVE DISTILLATION ZONE, REMOVING FROM SAID EXTRACTIVE DISTILLATION ZONE A VAPOR RAFFINATE AND A
References Cited (Backward Citations)
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Cited
US2748055A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |