Patent US2838582A successfully refreshed from Google Patents.
US2838582A
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US
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Hydrocarbon conversion process
Assignee: Universal Oil Products Co
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Filing: 1954-12-31
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Granted: 1958-06-10
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Expires: 1974-12-31
Abstract
No abstract record available.
Inventors
- 👤 Louis S Kassel
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:33
CPC Classifications
C; C10; C10G; C10G21/00; C10G61/00; C10G61/02; C10G61/06; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS WHICH COMPRISES INTRODUCING A VIRGIN HYDROCARBON CHARGE STOCK CONTAINING PARAFFINS AND AROMATICS TO A SOLVENT EXTRACTION ZONE WHEREIN SAID CHARGE STOCK IS TREATED WITH A SELECTIVE SOLVENT CONTAINING DIETHYLENE GLYCOL AND FROM ABOUT 2% TO ABOUT 30% BY WEIGHT OF WATER, SEPARATELY REMOVING FROM SAID EXTRACTION ZONE AN EXTRACT CONTAINING SAID SOLVENT AND A SUBSTANTIAL AMOUNT OF AROMATICS AND A RAFFINATE CONTAINING A SUBSTANTIAL AMOUNT OF PARAFFINS, TREATING SAID EXTRACT TO SEPARATE THE SOLVENT FROM THE AROMATICS, REFORMING AT LEAST A PORTION OF SAID RAFFINATE WITH A DEHYDROCYCLIZATION CATALYST AT DEHYDROCYCLIZATION CONDITIONS IN THE PRESENCE OF HYDROGEN THEREBY FORMING ADDITIONAL AROMATICS, INTRODUCING THE REFORMATE FROM SAID REFORMING ZONE TO A FIRST
Claim 2
Dependent Claim
113 words
A PROCESS WHICH COMPRISES INTRODUCING A VIRGIN HYDROCARBON CHARGE STOCK CONTAINING PARAFFINS AND AROMATICS TO A SOLVENT EXTRACTION ZONE WHEREIN SAID CHARGE STOCK IS TREATED WITH A SELECTIVE SOLVENT CONTAINING DIETHYLENE GLYCOL AND FROM ABOUT 2% TO ABOUT 30% BY WEIGHT OF WATER, SEPARATELY REMOVING FROM SAID EXTRACTION ZONE AN EXTRACT CONTAINING SAID SOLVENT AND A SUBSTANTIAL AMOUNT OF AROMATICS AND A RAFFINATE CONTAINING A SUBSTANTIAL AMOUNT OF PARAFFINS, TREATING SAID EXTRACT TO SEPARATE THE SOLVENT FROM THE AROMATICS, REFORMING AT LEAST A PORTION OF SAID RAFFINATE WITH A DEHYDROCYCLIZATION CATALYST AT DEHYDROCYCLIZATION CONDITIONS IN THE PRESENCE OF HYDROGEN THEREBY FORMING ADDITIONAL AROMATICS, INTRODUCING THE REFORMATE FROM SAID REFORMING ZONE TO A FIRST
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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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |