US2666746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Standard Oil Development Co
•
Filing: 1952-08-11
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Granted: 1954-01-19
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Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 John C Munday
- 👤 Dilworth T Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:16
CPC Classifications
C; C10; C10M; C10M145/00; C10M145/02; C10M145/10; C10M145/16; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL OIL AND A SMALL AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT THEREOF, OF AN OIL-SOLUBLE COPOLYMER OF A VINYL ESTER OF A FATTY ACID HAVING FROM 2 TO 18 CARBON ATOMS AND A DIALKYL FURMARATE WHEREIN EACH ALKYL GROUP RANGES FROM NOT LESS THAN 10 TO NOT MORE THAN 18 CARBON ATOMS.
Claim 2
Dependent Claim
62 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL OIL AND A SMALL AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT THEREOF, OF AN OIL-SOLUBLE COPOLYMER OF A VINYL ESTER OF A FATTY ACID HAVING FROM 2 TO 18 CARBON ATOMS AND A DIALKYL FURMARATE WHEREIN EACH ALKYL GROUP RANGES FROM NOT LESS THAN 10 TO NOT MORE THAN 18 CARBON ATOMS.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |