US2659697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oils containing an acyloxyacetic acid as a rust inhibitor
Assignee: Sinclair Refining Co
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Filing: 1950-01-25
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Granted: 1953-11-17
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Expires: 1970-01-25
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Wayo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:41
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/28; C10M2207/287; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
LUBRICATING OIL COMPOSITIONS CONSISTING ESSENTIALLY OF A HYDROCARBON MINERAL OIL WITH A SMALL AMOUNT, SUFFICIENT TO IMPART RUST PREVENTING CHARACTERISTICS TO SAID COMPOSITIONS, OF AN ACYLOXYACETIC ACID IN WHICH THE TOTAL NUMBER OF CARBON ATOMS IN THE ACYL GROUP IS AT LEAST 8.
Claim 2
Dependent Claim
43 words
LUBRICATING OIL COMPOSITIONS CONSISTING ESSENTIALLY OF A HYDROCARBON MINERAL OIL WITH A SMALL AMOUNT, SUFFICIENT TO IMPART RUST PREVENTING CHARACTERISTICS TO SAID COMPOSITIONS, OF AN ACYLOXYACETIC ACID IN WHICH THE TOTAL NUMBER OF CARBON ATOMS IN THE ACYL GROUP IS AT LEAST 8.
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) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |