US2866729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching oil compositions
Assignee: Shell Development Co
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Filing: 1956-07-27
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Granted: 1958-12-30
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Expires: 1976-07-27
Abstract
No abstract record available.
Inventors
- 👤 Zimpel Carl Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:15
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/56; C21D1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A QUENCHING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL HAING A VISCOSITY OF FROM 100 TO 200 SUS AT 100*F. CONTAINING FROM ABOUT 1.75% TO ABOUT 3.0% OF AN OIL-SOLUBLE COPOLYMER OBTAINED BY REACTING A CYCLOALKADIENE HYDROCARBON AND A LINOLENIC ACID OIL HAVING AN IODINE VALUE BETWEEN 100 AND 150 FOR 2-24 HOURS AT A TEMPERATURE OF FROM 50*C. TO 300*C.
Claim 2
Dependent Claim
66 words
A QUENCHING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL HAING A VISCOSITY OF FROM 100 TO 200 SUS AT 100*F. CONTAINING FROM ABOUT 1.75% TO ABOUT 3.0% OF AN OIL-SOLUBLE COPOLYMER OBTAINED BY REACTING A CYCLOALKADIENE HYDROCARBON AND A LINOLENIC ACID OIL HAVING AN IODINE VALUE BETWEEN 100 AND 150 FOR 2-24 HOURS AT A TEMPERATURE OF FROM 50*C. TO 300*C.
References Cited (Backward Citations)
US2734031A
Cited
US2340724A
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US2387895A
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US2485103A
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US2573940A
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US2536403A
Cited
US2710842A
Cited
US2799606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |