Patent US3000995A successfully refreshed from Google Patents.
US3000995A
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US
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Combined isomerization and cracking process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-07-23
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Granted: 1961-09-19
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Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 John E Hofmann
- 👤 Henry T Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:46
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/14; C07C9/16; C10; C10G; C10G11/00; C10G11/02; C10G11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PROCESS FOR OBTAINING AN UPGRADED HEPTANE FRACTION WHICH COMPRISES CONVERTING PARAFFINIC HYDROCARBONS IN A CONVERSION ZONE IN THE PRESENCE OF ALUMINUM BROMIDE TO FORM C5-C7 BRANCHED CHAIN HYDROCARBONS WHEREIN THE C7 FRACTION CONTAINS TRIMETHYL BUTANE, DIMETHYL PENTANE, FROM 40 TO 60 PERCENT METHYL HEXANES AND LESS THAN 10 PERCENT OF NORMAL HEPTANE, SEGREGATING SAID C7 FRACTION FROM SAID HYDROCARBONS AND SUBJECTING SAID C7 FRACTION TO A SELECTIVE CRACKING ACTION IN THE PRESENCE OF AN ALUMINUM HALIDE SELECTED FROM THE CLASS CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM BROMIDE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 150*F. TO ABOUT 250* F. WHEREBY SELECTIVE CRACKING OF SAID METHYL HEXANES TO ISOMERS OF BUTANE, PENTANE AND HEXANE IS EFFECTED, WHILE SAID TRIMETHYL BUTANE AND SAID DIMETHYL PENTANE REMAIN SUBSTANTIALLY UNCHANGED.
Claim 2
Dependent Claim
129 words
A PROCESS FOR OBTAINING AN UPGRADED HEPTANE FRACTION WHICH COMPRISES CONVERTING PARAFFINIC HYDROCARBONS IN A CONVERSION ZONE IN THE PRESENCE OF ALUMINUM BROMIDE TO FORM C5-C7 BRANCHED CHAIN HYDROCARBONS WHEREIN THE C7 FRACTION CONTAINS TRIMETHYL BUTANE, DIMETHYL PENTANE, FROM 40 TO 60 PERCENT METHYL HEXANES AND LESS THAN 10 PERCENT OF NORMAL HEPTANE, SEGREGATING SAID C7 FRACTION FROM SAID HYDROCARBONS AND SUBJECTING SAID C7 FRACTION TO A SELECTIVE CRACKING ACTION IN THE PRESENCE OF AN ALUMINUM HALIDE SELECTED FROM THE CLASS CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM BROMIDE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 150*F. TO ABOUT 250* F. WHEREBY SELECTIVE CRACKING OF SAID METHYL HEXANES TO ISOMERS OF BUTANE, PENTANE AND HEXANE IS EFFECTED, WHILE SAID TRIMETHYL BUTANE AND SAID DIMETHYL PENTANE REMAIN SUBSTANTIALLY UNCHANGED.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |