Patent US2701783A successfully refreshed from Google Patents.
US2701783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a high quality lube oil
Assignee: Standard Oil Development Co
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Filing: 1952-02-27
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Granted: 1955-02-08
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Expires: 1972-02-27
Abstract
No abstract record available.
Inventors
- 👤 Robert B Long
- 👤 Walter M Basch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:50
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/06; C10G21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
PROCESS FOR THE PRODUCTION OF A HIGH QUALITY LUBRICATING OIL PRODUCT HAVING A LOW NEUTRALIZATION NUMBER FROM A FEED OIL HAVING A RELATIVELY HIGH NEUTRALIZATION NUMBER WHICH COMPRISES CONTACTING SAID FEED OIL WITH A SOLVENT HAVING A PREFERENTIAL SELECTIVITY FOR THE MORE AROMATIC TYPE CONSTITUENTS AS COMPARED TO THE MORE PARAFFINIC TYPE CONSTITUENTS AND USING IN CONJUNCTION WITH SAID SOLVENT FROM ABOUT 0.2 TO 0.4 VOLUME % OF AMMONIA BASED UPON THE AMOUNT OF FEED OIL, SEPARATING A RAFFINATE PHASE AND RECOVERING SAID HIGH QUALITY LUBRICATING OIL PRODUCT THEREFROM.
Claim 2
Dependent Claim
89 words
PROCESS FOR THE PRODUCTION OF A HIGH QUALITY LUBRICATING OIL PRODUCT HAVING A LOW NEUTRALIZATION NUMBER FROM A FEED OIL HAVING A RELATIVELY HIGH NEUTRALIZATION NUMBER WHICH COMPRISES CONTACTING SAID FEED OIL WITH A SOLVENT HAVING A PREFERENTIAL SELECTIVITY FOR THE MORE AROMATIC TYPE CONSTITUENTS AS COMPARED TO THE MORE PARAFFINIC TYPE CONSTITUENTS AND USING IN CONJUNCTION WITH SAID SOLVENT FROM ABOUT 0.2 TO 0.4 VOLUME % OF AMMONIA BASED UPON THE AMOUNT OF FEED OIL, SEPARATING A RAFFINATE PHASE AND RECOVERING SAID HIGH QUALITY LUBRICATING OIL PRODUCT THEREFROM.
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) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |