Patent US2948669A successfully refreshed from Google Patents.
US2948669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of superior neutral oils
Assignee: —
•
Filing: —
•
Granted: 1960-08-09
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Expires: 1977-08-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:02
CPC Classifications
C; C10; C10M; C10M177/00; C10M101/00; C10M101/02; C10N; C10N2050/00; C10N2050/06; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE PROCESS OF PREPARING NEUTRAL LUBRICATING OIL COMPRISING LIGHTLY CRACKING RESIDUAL PETROLEUM OIL HAING A VISCOSITY HIGHER THAN THAT OF NEUTRAL OIL UNDER CONDITIONS TO CONVERT IT TO DISTILLATE OIL HAVING A VISCOSITY CORRESPONDING TO THAT OF NEUTRAL OIL CONTAINING A SUBSTANTIAL AMOUNT OF UNSATURATED HYDROCARBONS, AND EPOXIDIZING SAID CONVERTED OIL UNDER CONDITIONS TO FORM A SUBSTANTIAL AMOUNT OF EPOXIDES IN SITU.
Claim 2
Dependent Claim
62 words
THE PROCESS OF PREPARING NEUTRAL LUBRICATING OIL COMPRISING LIGHTLY CRACKING RESIDUAL PETROLEUM OIL HAING A VISCOSITY HIGHER THAN THAT OF NEUTRAL OIL UNDER CONDITIONS TO CONVERT IT TO DISTILLATE OIL HAVING A VISCOSITY CORRESPONDING TO THAT OF NEUTRAL OIL CONTAINING A SUBSTANTIAL AMOUNT OF UNSATURATED HYDROCARBONS, AND EPOXIDIZING SAID CONVERTED OIL UNDER CONDITIONS TO FORM A SUBSTANTIAL AMOUNT OF EPOXIDES IN SITU.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |