US2921104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination process of isomerization and selective fractionation followed by a sorption process
Assignee: Universal Oil Products Co
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Filing: 1957-11-08
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Granted: 1960-01-12
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Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:03
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR PRODUCING A HIGH OCTANE NUMBER PRODUCT FROM A FEED STOCK CONTAINING C6 PARAFFINS AND NAPHTHENES, WHICH COMPRISES SUBJECTING SAID FEED STOCK TO ISOMERIZATION, SEPARATING FROM THE RESULTANT PRODUCTS A DIMETHYLBUTANE FRACTION, A MONOMETHYLPENTANE FRACTION AND A HEAVIER FRACTION CONTAINING N-HEXANE AND BRANCHED CHAIN AND CYCLIC HYDROCARBONS, SUPPLYING THE SECOND-MENTIONED FRACTION TO THE ISOMERIZING STEP, CONTACTING SAID HEAVIER FRACTION WITH A SOLID SORBENT CAPABLE OF SELECTIVELY SORBING N-HEXANE WHILE REJECTING BRANCHED CHAIN AND CYCLIC HYDROCARBONS, COMMINGLING AT LEAST A PORTION OF THE THUS REJECTED BRANCHED CHAIN AND CYCLIC HYDROCARBON CONTENT OF SAID HEAVIER FRACTION WITH SAID DIMETHYLBUTANE FRACTION AND RECOVERING THE RESULTANT MIXTURE AS SAID HIGH OCTANE NUMBER PRODUCT, DESORBING N-HEXANE FROM SAID SOLID SORBENT AND SUPPLYING THE SAME TO THE ISOMERIZING STEP.
Claim 2
Dependent Claim
125 words
A PROCESS FOR PRODUCING A HIGH OCTANE NUMBER PRODUCT FROM A FEED STOCK CONTAINING C6 PARAFFINS AND NAPHTHENES, WHICH COMPRISES SUBJECTING SAID FEED STOCK TO ISOMERIZATION, SEPARATING FROM THE RESULTANT PRODUCTS A DIMETHYLBUTANE FRACTION, A MONOMETHYLPENTANE FRACTION AND A HEAVIER FRACTION CONTAINING N-HEXANE AND BRANCHED CHAIN AND CYCLIC HYDROCARBONS, SUPPLYING THE SECOND-MENTIONED FRACTION TO THE ISOMERIZING STEP, CONTACTING SAID HEAVIER FRACTION WITH A SOLID SORBENT CAPABLE OF SELECTIVELY SORBING N-HEXANE WHILE REJECTING BRANCHED CHAIN AND CYCLIC HYDROCARBONS, COMMINGLING AT LEAST A PORTION OF THE THUS REJECTED BRANCHED CHAIN AND CYCLIC HYDROCARBON CONTENT OF SAID HEAVIER FRACTION WITH SAID DIMETHYLBUTANE FRACTION AND RECOVERING THE RESULTANT MIXTURE AS SAID HIGH OCTANE NUMBER PRODUCT, DESORBING N-HEXANE FROM SAID SOLID SORBENT AND SUPPLYING THE SAME TO THE ISOMERIZING STEP.
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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |