Patent US2905736A successfully refreshed from Google Patents.
US2905736A
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Isomerization of hexane
Assignee: Universal Oil Products Co
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Filing: 1957-08-02
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Granted: 1959-09-22
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Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 Donald H Belden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:05
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/14; C07C9/16; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A PROCESS FOR THE ISOMERIZATION OF HEXANE WHICH COMPRISES INTRODUCING A NORMAL HEXANE LIQUID STREAM INTO AN INTERMEDIATE PORTION OF A FIRST FRACTION ZONE WHILE AT THE SAME TIME PASSING A LIQUID PHASE PRODUCT STREAM FROM THE BOTTOM OF A SECOND FRACTIONATION ZONE TO THE UPPER SECTION OF SAID FIRST FRACTIONATION ZONE TO THE HEXANES FROM AN UPPER PORTION OF SAID FIRST FRACTIONATION ZONE AND INTRODUCING THE SAME INTO THE LOWER PORTION OF SAID SECOND FRACTIONATION ZONE, WITHDRAWING FROM THE BOTTOM OF SAID FIRST FRACTIONATION ZONE A HYDROCARBON FRACTION ENRICHED IN NORMAL HEXANE AND PASSING SAID FRACTION TO AN ISOMERIZATION REACTION ZONE WHEREIN SAID FRACTION IS CONTACTED WITH HYDROGEN AND AN ISOMERIZATION
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |