Patent US4541122A successfully refreshed from Google Patents.
Patent US2908626A successfully refreshed from Google Patents.
US2908626A
Expired / Lapsed
US
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Process for catalytic desulfurization and reforming of cracked naphthas
Assignee: Union Oil Company of California
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Filing: 1956-03-26
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Granted: 1959-10-13
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Harry F Poll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR DESULFURIZING AND REFORMING A FULLRANGE, HIGH-SULFUR, THERMALLY CRACKED NAPHTHA, WHICH COMPRISES FRACTIONATING SAID NAPHTHA TO RECOVER A LIGHT OVERHEAD FRACTION RICH IN OLEFINS AND A HEAVY BOTTOMS FRACTION CONSTITUTING SUBSTANTIALLY THE ENTIRE REMAINDER OF SAID NAPHTHA, SAID LIGHT FRACTION CONTAINING THE MAJOR PART OF ALL THE HYDROCARBON COMPONENTS AND MARCAPTANS HAVING A TRUE BOILING POINT BELOW ABOUT 180*F., SAID LIGHT FRACTION BEING SUBSTANTIALLY FREE FROM (1) COMPOUNDS CONTAINING A THIOPHENE RING AND (2) HYDROCARBON COMPONENTS HAVING A TRUE BOILING POINT ABOVE ABOUT 190* F., SUBJECTING SAID LIGHT FRACTION TO AQUEOUS- ALKALINE EXTRACTION TO EXTRACT THEREFROM SAID MERCAPTANS, SUBJECTING SAID HEAVY FRACTION TO CATALYTIC HYDRODESULFURIZATION IN THE PRESENCE OF HYDROGEN AND CAOBALT MOLYBDATE
Claim 2
Dependent Claim
115 words
A PROCESS FOR DESULFURIZING AND REFORMING A FULLRANGE, HIGH-SULFUR, THERMALLY CRACKED NAPHTHA, WHICH COMPRISES FRACTIONATING SAID NAPHTHA TO RECOVER A LIGHT OVERHEAD FRACTION RICH IN OLEFINS AND A HEAVY BOTTOMS FRACTION CONSTITUTING SUBSTANTIALLY THE ENTIRE REMAINDER OF SAID NAPHTHA, SAID LIGHT FRACTION CONTAINING THE MAJOR PART OF ALL THE HYDROCARBON COMPONENTS AND MARCAPTANS HAVING A TRUE BOILING POINT BELOW ABOUT 180*F., SAID LIGHT FRACTION BEING SUBSTANTIALLY FREE FROM (1) COMPOUNDS CONTAINING A THIOPHENE RING AND (2) HYDROCARBON COMPONENTS HAVING A TRUE BOILING POINT ABOVE ABOUT 190* F., SUBJECTING SAID LIGHT FRACTION TO AQUEOUS- ALKALINE EXTRACTION TO EXTRACT THEREFROM SAID MERCAPTANS, SUBJECTING SAID HEAVY FRACTION TO CATALYTIC HYDRODESULFURIZATION IN THE PRESENCE OF HYDROGEN AND CAOBALT MOLYBDATE
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |