US2999813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant comprising a sulfurized mineral oil and a polyvalent metal dithiocarbamate
Assignee: Texaco Inc
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Filing: 1956-12-18
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Granted: 1961-09-12
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Expires: 1976-12-18
Abstract
No abstract record available.
Inventors
- 👤 Richard C Givens
- 👤 Melvin R Hefty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:10
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/066; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/084; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A STABLY SULFURIZED MINERAL LUBRICATING OIL IN MAJOR PROPORTION CONTAINING ABOUT 0.3 TO 1.5 PERCENT BY WEIGHT OF COMBINED STABLE SULFUR, ABOUT 5-20 PERCENT BY WEIGHT OF A LEAD SOAP SELECTED FROM THE GROUP CONSISTING OF LEAD NAPHTHENATES AND LEAD SOAPS OF FATTY ACIDS CONTAINING AT LEAST 8 CARBON ATOMS PER MOLECULE, ABOUT 0.5-5 PERCENT BY WEIGHT OF A SULFURIZED FATTY OIL, AND ABOUT 0.1 TO 10 PERCENT BY WEIGHT OF AN OIL SOLUBLE POLYVALENT METAL DITHIOCARBAMATE, WHEREIN THE SAID POLYVALENT METAL IS CHOSEN FROM THE GROUP CONSISTING OF ALKALINE EARTH METALS, CADMIUM AND ZINC, SAID STABLY SULFURIZED MINERAL LUBRICATING OIL BEING OBTAINED BY HEATING A MINERAL LUBRICATING OIL WITH SULFUR AT A TEMPERATURE ABOVE ABOUT 350*F. UNTIL A SULFURIZED PRODUCT IS OBTAINED WHEREIN THE SULFUR IS PRESENT SUBSTANTIALLY ENTIRELY IN A FORM WHICH IS NONREACTIVE WITH COPPER IN THE COPPER STRIP CORROSION TEST AT 212*F.
Claim 2
Dependent Claim
152 words
A LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A STABLY SULFURIZED MINERAL LUBRICATING OIL IN MAJOR PROPORTION CONTAINING ABOUT 0.3 TO 1.5 PERCENT BY WEIGHT OF COMBINED STABLE SULFUR, ABOUT 5-20 PERCENT BY WEIGHT OF A LEAD SOAP SELECTED FROM THE GROUP CONSISTING OF LEAD NAPHTHENATES AND LEAD SOAPS OF FATTY ACIDS CONTAINING AT LEAST 8 CARBON ATOMS PER MOLECULE, ABOUT 0.5-5 PERCENT BY WEIGHT OF A SULFURIZED FATTY OIL, AND ABOUT 0.1 TO 10 PERCENT BY WEIGHT OF AN OIL SOLUBLE POLYVALENT METAL DITHIOCARBAMATE, WHEREIN THE SAID POLYVALENT METAL IS CHOSEN FROM THE GROUP CONSISTING OF ALKALINE EARTH METALS, CADMIUM AND ZINC, SAID STABLY SULFURIZED MINERAL LUBRICATING OIL BEING OBTAINED BY HEATING A MINERAL LUBRICATING OIL WITH SULFUR AT A TEMPERATURE ABOVE ABOUT 350*F. UNTIL A SULFURIZED PRODUCT IS OBTAINED WHEREIN THE SULFUR IS PRESENT SUBSTANTIALLY ENTIRELY IN A FORM WHICH IS NONREACTIVE WITH COPPER IN THE COPPER STRIP CORROSION TEST AT 212*F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |