Patent US3595967A successfully refreshed from Google Patents.
US3595967A
Expired / Lapsed
US
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Base oil stock for five-grade lubricant for internal combustion engines
Assignee: Standard Oil Co
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Filing: 1969-09-25
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Granted: 1971-07-27
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Expires: 1989-09-25
Abstract
Abstract A BLENDED MOTOR OIL BASE STOCK FOR GASOLINE INTERNAL COMBUSTION ENGINES IS PROVIDED WHICH IS USUABLE THE YEAR ROUND DESPITE EXTREME CLIMATIC CONDITIONS. THE BASE OIL IS FORMULATED TO MEET SPECIFICATIONS FOR SAE 10W50 FIVEGRADE MOTOR OIL WHEN SUITABLE ADDITIVES ARE INCORPORATED THEREIN. THE MOTOR OIL COMPRISES A BLEND OF TWC NEUTRAL OILS AND A DEWAXED CATALYTICALLY CRACKED CYCLE OIL.
Inventors
- 👤 Richard L Riedel
- 👤 Richard D Schieman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:54
CPC Classifications
C; C10; C10M; C10M101/00; C10M101/02; C10M2203/00; C10M2203/10; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |