US2935459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion process
Assignee: Texaco Inc
•
Filing: 1956-05-01
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Granted: 1960-05-03
•
Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Howard V Hess
- 👤 Edward R Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:31
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G59/00; C10G59/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A PROCESS FOR UPGRADING A NAPHTHA STOCK CONTAINING PARAFFINS AND NAPHTHENES WHICH COMPRISES CONTACTING SAID NAPHTHA IN A FIRST REACTION ZONE WITH A PLATINUMALUMINA CATALYST IN THE PRESENCE OF HYDROGEN UNDER REFORMING CONDITIONS SELECTED TO EFFECT SELECTIVE DEHYDROGENATION OF NAPHTHENES WITH THE PRODUCTION OF AROMATICS AND HYDROGEN WITH SUBSTANTIAL FREEDOM FROM THE FORMATION OF CARBONACEOUS DEPOSITS, SEPARATING FROM THE EFFLUENT FROM SAID FIRST REACTION ZONE A FIRST GAS RICH IN HYDROGEN AND A LIQUID FRACTION, RECYCLING A PORTION OF SAID FIRST GAS RICH IN HYDROGEN TO SAID FIRST REACTION ZONE, FRACTIONATING SAID LIQUID FRACTION TO PRODUCE A LIGHT FRACTION BOILING BELOW ABOUT 250*F. AND A HEAVY FRACTION, CONTACTING SAID HEAVY FRACTION IN A SECOND REACTION ZONE WITH A CATALYST COMPRISING A COMPOUND OF CHROMIUM UNDER REFORMING CONDITIONS SELECTED TO EFFECT DEHYDROGENATION AND CYCLIZATION OF PARAFFINS TO PRODUCE AROMATICS AND HYDROGEN,
Claim 2
Dependent Claim
140 words
A PROCESS FOR UPGRADING A NAPHTHA STOCK CONTAINING PARAFFINS AND NAPHTHENES WHICH COMPRISES CONTACTING SAID NAPHTHA IN A FIRST REACTION ZONE WITH A PLATINUMALUMINA CATALYST IN THE PRESENCE OF HYDROGEN UNDER REFORMING CONDITIONS SELECTED TO EFFECT SELECTIVE DEHYDROGENATION OF NAPHTHENES WITH THE PRODUCTION OF AROMATICS AND HYDROGEN WITH SUBSTANTIAL FREEDOM FROM THE FORMATION OF CARBONACEOUS DEPOSITS, SEPARATING FROM THE EFFLUENT FROM SAID FIRST REACTION ZONE A FIRST GAS RICH IN HYDROGEN AND A LIQUID FRACTION, RECYCLING A PORTION OF SAID FIRST GAS RICH IN HYDROGEN TO SAID FIRST REACTION ZONE, FRACTIONATING SAID LIQUID FRACTION TO PRODUCE A LIGHT FRACTION BOILING BELOW ABOUT 250*F. AND A HEAVY FRACTION, CONTACTING SAID HEAVY FRACTION IN A SECOND REACTION ZONE WITH A CATALYST COMPRISING A COMPOUND OF CHROMIUM UNDER REFORMING CONDITIONS SELECTED TO EFFECT DEHYDROGENATION AND CYCLIZATION OF PARAFFINS TO PRODUCE AROMATICS AND HYDROGEN,
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |