US3281355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable colloidal dispersions of molybdenum sulfide
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-11-15
•
Granted: 1966-10-25
•
Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Elmer B Cyphers
- 👤 Max W Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:30
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
A METHOD FOR PREPARING A STABLE DISPERSION OF MOLYBDENUM SULFIDE WHICH COMPRISES THE STEPS OF: PREPARING A MIXTURE OF A LUBRICATING OIL DETETGENT ADDITIVE, CAPABLE OF STABLE SUSPENDING MOLYBDENUM SULFIDE IN LUBRICATING OIL, AND A SOLUTION OF A MOLYBDENUM COMPOUND DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND C1 TO C4 ALIPHATIC ALCOHOLS, SAID MOLYBDENUM COMPOUND BEING CHARACTERIZED BY HAVING A MOLYBDENUM ATOMS WITH A VALENCE OF AT LEAST FOUR AND BY BEING SOLUBLE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND C1 TO C4 ALIPHATIC ALCOHOLS; CONTACTING SAID MIXTURE WITH A REAGENT EFFECTIVE TO FURNISH SULFIDE IONS, WHEREBY FINELY DISPERSED MOLYBDENUM SULFIDE IS FORMED; AND REMOVING SAID SOLVENT FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
120 words
A METHOD FOR PREPARING A STABLE DISPERSION OF MOLYBDENUM SULFIDE WHICH COMPRISES THE STEPS OF: PREPARING A MIXTURE OF A LUBRICATING OIL DETETGENT ADDITIVE, CAPABLE OF STABLE SUSPENDING MOLYBDENUM SULFIDE IN LUBRICATING OIL, AND A SOLUTION OF A MOLYBDENUM COMPOUND DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND C1 TO C4 ALIPHATIC ALCOHOLS, SAID MOLYBDENUM COMPOUND BEING CHARACTERIZED BY HAVING A MOLYBDENUM ATOMS WITH A VALENCE OF AT LEAST FOUR AND BY BEING SOLUBLE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND C1 TO C4 ALIPHATIC ALCOHOLS; CONTACTING SAID MIXTURE WITH A REAGENT EFFECTIVE TO FURNISH SULFIDE IONS, WHEREBY FINELY DISPERSED MOLYBDENUM SULFIDE IS FORMED; AND REMOVING SAID SOLVENT FROM THE REACTION MIXTURE.
Claim 3
Dependent Claim
18 words
A METHOD AS DEFINED BY CLAIM 1 WHEREIN SAID LUBRICATING OIL DETERGENT ADDITIVE IS ALKALINE EARTH METAL SULFONATE.
References Cited (Backward Citations)
CA570814A
Cited
CA574161A
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US2619458A
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US2609342A
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US2781314A
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US2956018A
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US3057896A
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |