US2773005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for obtaining an oxidation inhibitor and an oxidation resistant lubricating oil
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-09-17
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Granted: 1956-12-04
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Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert W H Meyer
- 👤 Edward F Wadley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:17
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10G; C10G21/00; C10G21/06; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD FOR OBTAINING AN IMPROVED OXIDATION RESISTANT LUBRICATING OIL INCLUDING THE STEPS OF EXTRACTING IN A FIRST EXTRACTION ZONE IN THE PRESENCE OF PHENOL AND WATER A PARAFFINIC LIGHT MOTOR OIL DISTILLATED TO SEPARATE IT INTO AN EXTRACT PHASE AND A RAFFINATED PHASE, REMOVING SAID RAFFINATE PHASE FROM SAID FIRST EXTRACTION ZONE AND STRIPPING PHENOL THEREFROM TO RECOVER A MOTOR OIL FRACTION, REMOVING THE FIRST EXTRACT PHASE FROM SAID FIRST EXTRACTION ZONE, PASSING IT TO A SEPARATION ZONE AND THERE ADDING FROM 3% TO 6% BY VOLUME WATER THERETO CAUSE PHASE SEPARATION THEREIN TO FORM A SECOND EXTRACT FRACTION AND A SECOND RAFFINATE FRACTION, SEPARATELY REMOVING SAID SECOND EXTRACT FRACTION AND SAID SECOND RAFFINATE FRACTION FROM SAID SEPARATION ZONE, STRIPPING THE PHENOL FROM SAID SECOND EXTRACT FRACTION TO RECOVER A FINISHED OXIDATION INHIBITOR AND ADMIXING AT LEAST A PORTION OF SAID FINISHED OXIDATION INHIBITOR WITH SAID MOTOR OIL FRACTION TO RECOVER A FINISHED OXIDATION RESISTANT LUBRICATING OIL.
Claim 2
Independent Claim
158 words
A METHOD FOR OBTAINING AN IMPROVED OXIDATION RESISTANT LUBRICATING OIL INCLUDING THE STEPS OF EXTRACTING IN A FIRST EXTRACTION ZONE IN THE PRESENCE OF PHENOL AND WATER A PARAFFINIC LIGHT MOTOR OIL DISTILLATED TO SEPARATE IT INTO AN EXTRACT PHASE AND A RAFFINATED PHASE, REMOVING SAID RAFFINATE PHASE FROM SAID FIRST EXTRACTION ZONE AND STRIPPING PHENOL THEREFROM TO RECOVER A MOTOR OIL FRACTION, REMOVING THE FIRST EXTRACT PHASE FROM SAID FIRST EXTRACTION ZONE, PASSING IT TO A SEPARATION ZONE AND THERE ADDING FROM 3% TO 6% BY VOLUME WATER THERETO CAUSE PHASE SEPARATION THEREIN TO FORM A SECOND EXTRACT FRACTION AND A SECOND RAFFINATE FRACTION, SEPARATELY REMOVING SAID SECOND EXTRACT FRACTION AND SAID SECOND RAFFINATE FRACTION FROM SAID SEPARATION ZONE, STRIPPING THE PHENOL FROM SAID SECOND EXTRACT FRACTION TO RECOVER A FINISHED OXIDATION INHIBITOR AND ADMIXING AT LEAST A PORTION OF SAID FINISHED OXIDATION INHIBITOR WITH SAID MOTOR OIL FRACTION TO RECOVER A FINISHED OXIDATION RESISTANT LUBRICATING OIL.
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |