US2748055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion process
Assignee: ExxonMobil Oil Corp
•
Filing: 1952-01-04
•
Granted: 1956-05-29
•
Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
- 👤 Grady L Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:27
CPC Classifications
C; C10; C10G; C10G55/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A HYDROCARBON CONVERSION PROCESS WHICH COMPRISES CONTACTING AN AROMATIC-CONTAINING CRACKING CHARGE HYDROCARBON STOCK HAVING A SAYBOLT UNIVERSAL VICOSITY AT 122* F. OF ABOUT 35 TO ABOUT 200 SECONDS AND HAVING A BOILING RANGE OF ABOUT 350* TO ABOUT 1000* F. WITH THE EXTRACT PHASE RESULTING FROM THE REFINING OF A PETROLEUM LUBRICATING OIL HAVING A SAYBOLT UNIVERSAL VISCOSITY AT 210* F. OF ABOUT 35 TO ABOUT 200 SECONDS WITH A SOLVENT SELECTED FROM THE CLASS OF SOLVENTS WHICH HAVE A PREFERENTIAL SELECTIVITY FOR THE RELATIVELY MORE AROMATIC TYPE CONSTITUENTS AS COMPARED TO THE RELATIVELY MORE PARAFFINIC TYPE CONSITUENTS, SEPARATING THE RESULTING EXTRACT AND RAFFINATE FRACTIONS, REMOVING SOLVENT FROM SAID SEPARATED RAFFINATE FRACTION AND SUBJECTING THE RESULTING RAFFINATE FRACTION, FREED OF SOLVENT, TO CATALYST CRACKING.
Claim 2
Dependent Claim
124 words
A HYDROCARBON CONVERSION PROCESS WHICH COMPRISES CONTACTING AN AROMATIC-CONTAINING CRACKING CHARGE HYDROCARBON STOCK HAVING A SAYBOLT UNIVERSAL VICOSITY AT 122* F. OF ABOUT 35 TO ABOUT 200 SECONDS AND HAVING A BOILING RANGE OF ABOUT 350* TO ABOUT 1000* F. WITH THE EXTRACT PHASE RESULTING FROM THE REFINING OF A PETROLEUM LUBRICATING OIL HAVING A SAYBOLT UNIVERSAL VISCOSITY AT 210* F. OF ABOUT 35 TO ABOUT 200 SECONDS WITH A SOLVENT SELECTED FROM THE CLASS OF SOLVENTS WHICH HAVE A PREFERENTIAL SELECTIVITY FOR THE RELATIVELY MORE AROMATIC TYPE CONSTITUENTS AS COMPARED TO THE RELATIVELY MORE PARAFFINIC TYPE CONSITUENTS, SEPARATING THE RESULTING EXTRACT AND RAFFINATE FRACTIONS, REMOVING SOLVENT FROM SAID SEPARATED RAFFINATE FRACTION AND SUBJECTING THE RESULTING RAFFINATE FRACTION, FREED OF SOLVENT, TO CATALYST CRACKING.
References Cited (Backward Citations)
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US2139392A
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US2374102A
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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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |