Patent EP0402055A2 successfully refreshed from Google Patents.
Patent US2867583A successfully refreshed from Google Patents.
US2867583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing lubricating oils by solvent extraction
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-10-07
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Granted: 1959-01-06
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Expires: 1973-10-07
Abstract
No abstract record available.
Inventors
- 👤 Clinton H Holder
- 👤 Walter M Basch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:27
CPC Classifications
C; C10; C10G; C10G21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR PRODUCING LUBRICATING OIL BY SOLVENT EXTRACTION OF A VIRGIN LUBRICATING OIL DISTILLATE NORMALLY BOILING IN THE RANGE OF ABOUT 700* TO 1150* F., WHICH COMPRISES: SEGREGATING A HIGHER BOILING FRACTION OF SAID DISTILLATE BOILING IN THE RANGE OF ABOUT 800* TO 1150* F., THEREBY EXCLUDING THE LOWEST BOILING FRACTION FROM SAID DISTILLATE, BLENDING WITH SAID HIGHER BOILING FRACTION A CATALYTIC CYCLE OIL CONSTITUTING CATALYTICALLY CRACKED CON-
Claim 2
Dependent Claim
69 words
A PROCESS FOR PRODUCING LUBRICATING OIL BY SOLVENT EXTRACTION OF A VIRGIN LUBRICATING OIL DISTILLATE NORMALLY BOILING IN THE RANGE OF ABOUT 700* TO 1150* F., WHICH COMPRISES: SEGREGATING A HIGHER BOILING FRACTION OF SAID DISTILLATE BOILING IN THE RANGE OF ABOUT 800* TO 1150* F., THEREBY EXCLUDING THE LOWEST BOILING FRACTION FROM SAID DISTILLATE, BLENDING WITH SAID HIGHER BOILING FRACTION A CATALYTIC CYCLE OIL CONSTITUTING CATALYTICALLY CRACKED CON-
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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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |