Patent US2638447A successfully refreshed from Google Patents.
US2638447A
Expired / Lapsed
US
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Gear lubricant
Assignee: ExxonMobil Oil Corp
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Filing: 1950-02-08
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Granted: 1953-05-12
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Expires: 1970-02-08
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Otto
- 👤 Leo W Manley
- 👤 Ralph V White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:04
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2211/00; C10M2211/02; C10M2219/00; C10M2219/06; C10M2219/062; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN EXTREME PRESSURE LUBRICATING COMPOSITION COMPRISING AN MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND MINOR PROPORTIONS OF ADDITION AGENTS AS FOLLOWS: (A) FROM ABOUT 1% TO ABOUT 10% OF A PRODUCT OBTAINED BY CHEMICALLY SUBSTITUTING A PART ONLY OF THE CHLORINE IN A CHLORINATED ALIPHATIC HYDROCARBON MATERIAL HAVING FROM 2 TO ABOUT 24 CARBON ATOMS WITH A THIOCARBONATE GROUP, (B) FROM ABOUT 0.1% TO ABOUT 3% OF DIHYDROABIETYL MELATE AND (C) FROM ABOUT 0.1% TO ABOUT 1.5% OF THE REACTION PRODUCT FORMED BY REACTING 3 MOLES OF AN ALKYLATED PHENOL WITH ABOUT 1 MOLE OF PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 125* C.
Claim 2
Dependent Claim
110 words
AN EXTREME PRESSURE LUBRICATING COMPOSITION COMPRISING AN MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND MINOR PROPORTIONS OF ADDITION AGENTS AS FOLLOWS: (A) FROM ABOUT 1% TO ABOUT 10% OF A PRODUCT OBTAINED BY CHEMICALLY SUBSTITUTING A PART ONLY OF THE CHLORINE IN A CHLORINATED ALIPHATIC HYDROCARBON MATERIAL HAVING FROM 2 TO ABOUT 24 CARBON ATOMS WITH A THIOCARBONATE GROUP, (B) FROM ABOUT 0.1% TO ABOUT 3% OF DIHYDROABIETYL MELATE AND (C) FROM ABOUT 0.1% TO ABOUT 1.5% OF THE REACTION PRODUCT FORMED BY REACTING 3 MOLES OF AN ALKYLATED PHENOL WITH ABOUT 1 MOLE OF PHOSPHORUS PENTOXIDE, AT A TEMPERATURE OF FROM ABOUT 75* C. TO ABOUT 125* C.
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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |