Patent US2846372A successfully refreshed from Google Patents.
US2846372A
Expired / Lapsed
US
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Stabilized petroleum oils
Assignee: Sunoco Inc
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Filing: 1954-07-15
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Granted: 1958-08-05
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Expires: 1974-07-15
Abstract
No abstract record available.
Inventors
- 👤 Schneider Abraham
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
C; C10; C10G; C10G21/00; C10G17/00; C10G17/02; C10G17/04; C10G17/06; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
METHOD FOR THE PREPARATION OF AN OXIDATION INHIBITOR ADAPTED TO IMPART INCREASED RESISTANCE TO OXIDATION TO OLEAGINOUS MATERIALS WHICH COMPRISES: (A) CATALYTICALLY CRACKING A HYDROCARBON OIL BY CONTACT WITH A CRACKING CATALYST UNDER CRACKING CONDITIONS, (B) SEPARATING FROM THE CRACKED OIL A RESIDUAL FRACTION BOILING ABOVE 350*F., (C) CONTACTING SAID RESIDUAL FRACTION WITH AN EXTRACTANT SELECTIVE FOR SEPARATING AROMATIC HYDROCARBONS FROM NONAROMATIC HYDROCARBONS THEREBY PRODUCING A FRACTION HAVING A HIGH AROMATIC HYDROCARBON CONTENT, (D) CONTACTING THE FRACTION HAVING A HIGH AROMATIC HYDROCARBON CONTENT WITH FROM 0.5 TO 5 POUNDS OF CONCENTRATED SULFURIC ACID PER BARREL OF THE FRACTION CONTACTED, (E) SEPARATING ACID FROM THE RESIDUAL FRACTION, (F) NEUTRALIZING ACIDIC COMPONENTS OF THE SEPARATED RESIDUAL FRACTION, AND (G) DISTILLING THE SEPARATED RESIDUAL FRACTION TO SEPARATE COMPONENTS THEREOF HAVING MOLECULAR WEIGHTS WITHIN THE RANGE OF 200 TO 400.
Claim 2
Dependent Claim
136 words
METHOD FOR THE PREPARATION OF AN OXIDATION INHIBITOR ADAPTED TO IMPART INCREASED RESISTANCE TO OXIDATION TO OLEAGINOUS MATERIALS WHICH COMPRISES: (A) CATALYTICALLY CRACKING A HYDROCARBON OIL BY CONTACT WITH A CRACKING CATALYST UNDER CRACKING CONDITIONS, (B) SEPARATING FROM THE CRACKED OIL A RESIDUAL FRACTION BOILING ABOVE 350*F., (C) CONTACTING SAID RESIDUAL FRACTION WITH AN EXTRACTANT SELECTIVE FOR SEPARATING AROMATIC HYDROCARBONS FROM NONAROMATIC HYDROCARBONS THEREBY PRODUCING A FRACTION HAVING A HIGH AROMATIC HYDROCARBON CONTENT, (D) CONTACTING THE FRACTION HAVING A HIGH AROMATIC HYDROCARBON CONTENT WITH FROM 0.5 TO 5 POUNDS OF CONCENTRATED SULFURIC ACID PER BARREL OF THE FRACTION CONTACTED, (E) SEPARATING ACID FROM THE RESIDUAL FRACTION, (F) NEUTRALIZING ACIDIC COMPONENTS OF THE SEPARATED RESIDUAL FRACTION, AND (G) DISTILLING THE SEPARATED RESIDUAL FRACTION TO SEPARATE COMPONENTS THEREOF HAVING MOLECULAR WEIGHTS WITHIN THE RANGE OF 200 TO 400.
Claim 3
Dependent Claim
10 words
THE OXIDATION INHIBITOR PREPARED BY THE METHOD OF CLAIM 1.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |