US3069482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclohexane isomerization
Assignee: Union Oil Company of California
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Filing: 1958-09-22
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Granted: 1962-12-18
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Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fieck
- 👤 Carlyle G Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/29; C07C2601/00; C07C2601/06; C07C2601/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR THE ISOMERIZATION OF CYCLOHEXANE TO METHYL CYCLOPENTANE WHICH COMPRISES CONTACTING IN THE VAPOR PHASE A HYDROCARBON MIXTURE COMPRISING CYCLOHEXANE AND OTHER HYDROCARBONS BOILING WITHIN THE GASOLINE BOILING RANGE WITH A SOLID GRANULAR CATALYST ESSENTIALLY COMPRISING A PARTIALLY DEHYDRATED CRYSTALLINE TYPE X ZEOLITIC METALLO ALUMINO SILICATE HAVING SUBSTANTIALLY UNIFORM PORES BETWEEN ABOUT 7A. AND ABOUT 13A, IN DIAMESTER, SAID CONTACTING BEING EFFECTED AT A TEMPERATURE BETWEEN ABOUT 100*F. AND ABOUT 800*F., AT A PRESSURE BETWEEN ABOUT 0 P.S.I.G. AND ABOUT 1,000 P.S.I.G., AND AT A LIQUID HOURLY SPACE VELOCITY BETWEEN ABOUT 0.1 AND ABOUT 10, WHEREBY THERE IS OBTAINED AN ISOMERIAZTE ENRICHED IN METHYLCYCLOPENTANE; AND SEPARATING SAID ISOMERIATE INTO A METHYLCYCLOPENTANE PRODUCT FRACTION WHICH IS SUBSTANTIALLY CYCLOHEXANE-FREE AND AN UNCOVERTED FRACTION RICH IN CYCLOHEXANE.
Claim 2
Dependent Claim
126 words
A PROCESS FOR THE ISOMERIZATION OF CYCLOHEXANE TO METHYL CYCLOPENTANE WHICH COMPRISES CONTACTING IN THE VAPOR PHASE A HYDROCARBON MIXTURE COMPRISING CYCLOHEXANE AND OTHER HYDROCARBONS BOILING WITHIN THE GASOLINE BOILING RANGE WITH A SOLID GRANULAR CATALYST ESSENTIALLY COMPRISING A PARTIALLY DEHYDRATED CRYSTALLINE TYPE X ZEOLITIC METALLO ALUMINO SILICATE HAVING SUBSTANTIALLY UNIFORM PORES BETWEEN ABOUT 7A. AND ABOUT 13A, IN DIAMESTER, SAID CONTACTING BEING EFFECTED AT A TEMPERATURE BETWEEN ABOUT 100*F. AND ABOUT 800*F., AT A PRESSURE BETWEEN ABOUT 0 P.S.I.G. AND ABOUT 1,000 P.S.I.G., AND AT A LIQUID HOURLY SPACE VELOCITY BETWEEN ABOUT 0.1 AND ABOUT 10, WHEREBY THERE IS OBTAINED AN ISOMERIAZTE ENRICHED IN METHYLCYCLOPENTANE; AND SEPARATING SAID ISOMERIATE INTO A METHYLCYCLOPENTANE PRODUCT FRACTION WHICH IS SUBSTANTIALLY CYCLOHEXANE-FREE AND AN UNCOVERTED FRACTION RICH IN CYCLOHEXANE.
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |