US2920115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of naphthalene from a petroleum oil
Assignee: Sinclair Refining Co
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Filing: 1955-09-09
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Granted: 1960-01-05
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Expires: 1975-09-09
Abstract
No abstract record available.
Inventors
- 👤 Bernard S Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OR PRODUCING NAPHTHALENE WHICH COMPRISES EXTRACTING WITH A MATERIAL SELECTIVE FOR AROMATICS A LIGHT CATALYTIC CYCLE OIL DERIVED BY CRACKING A PETROLEUM HYDROCABON OIL IN THE PRESENCE OF AN ACIDIC EATALYST, SAID LIGHT CYCLE OIL HAVING A BOILING RANGE WITHIN ABOYT 400* TO 600*F., SAID EXTRACTING BEING UNDER CONDITIONS TO PRODUCE AN AROMATIC RICH EXTRACT OF ND25 OF ABOUT 1.55 TO 1.61 AND A SPECIFIC DISPERSION OF ABOUT 200 TO 270, HYDROCONVERSION OF THE EXTRACTED OIL BY CONTACTING THE EXTRACTED OIL IN THE PRESENCE OF HYDROGEN AND A HYDROFORMING CATALYST HAVING A NON-COMBUSTIBLE BASE AT REACTION CONDITIONS OF SEVERITY DEFINED BY TEMPERATURE AND SPACE VELOCITY OF FORM ABOUT 1050* TO 1150*F. AT 0.5 LHSV AND AT A PRESSURE OF AT LEAST ABOUT ATMOSPHERIC TO FORM NAPHTHALENE, AND SEPARATING THE NAPTHALENE FROM THE HYDROCONVERSION PRODUCT.
Claim 2
Independent Claim
136 words
THE METHOD OR PRODUCING NAPHTHALENE WHICH COMPRISES EXTRACTING WITH A MATERIAL SELECTIVE FOR AROMATICS A LIGHT CATALYTIC CYCLE OIL DERIVED BY CRACKING A PETROLEUM HYDROCABON OIL IN THE PRESENCE OF AN ACIDIC EATALYST, SAID LIGHT CYCLE OIL HAVING A BOILING RANGE WITHIN ABOYT 400* TO 600*F., SAID EXTRACTING BEING UNDER CONDITIONS TO PRODUCE AN AROMATIC RICH EXTRACT OF ND25 OF ABOUT 1.55 TO 1.61 AND A SPECIFIC DISPERSION OF ABOUT 200 TO 270, HYDROCONVERSION OF THE EXTRACTED OIL BY CONTACTING THE EXTRACTED OIL IN THE PRESENCE OF HYDROGEN AND A HYDROFORMING CATALYST HAVING A NON-COMBUSTIBLE BASE AT REACTION CONDITIONS OF SEVERITY DEFINED BY TEMPERATURE AND SPACE VELOCITY OF FORM ABOUT 1050* TO 1150*F. AT 0.5 LHSV AND AT A PRESSURE OF AT LEAST ABOUT ATMOSPHERIC TO FORM NAPHTHALENE, AND SEPARATING THE NAPTHALENE FROM THE HYDROCONVERSION PRODUCT.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |