US3912643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing neutralized alkali metal borates
Assignee: Chevron USA Inc
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Filing: 1973-07-05
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Granted: 1975-10-14
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Expires: 1993-07-05
Abstract
Abstract An extreme pressure lubricating composition having excellent water tolerance properties and excellent compatibility with other lubricating oil additives comprises (A) an oil of lubricating viscosity, (B) an alkali metal borate at least partially neutralized with the acidic anion of phosphoric acid or sulfuric acid, and (C) a mixture of lipophilic dispersants.
Inventors
- 👤 John H Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/086; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/24; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
32 words
A LUBRICATING COMPOSITION COMPRISING (1) AN OIL OF LUBRICATING VISCOSITY AND DISPERSED THEREIN (2) AN AMOUNT EFFECTIVE TO IMPACT EXTREME PRESSURE PROPERTIES TO SAID OIL OF A HYDRATED BORATE OF THE FOMULA
Claim 2
Dependent Claim
32 words
A LUBRICATING COMPOSITION COMPRISING (1) AN OIL OF LUBRICATING VISCOSITY AND DISPERSED THEREIN (2) AN AMOUNT EFFECTIVE TO IMPACT EXTREME PRESSURE PROPERTIES TO SAID OIL OF A HYDRATED BORATE OF THE FOMULA
Claim 3
Dependent Claim
70 words
The composition of claim 1 wherein said neutralized borate is dispersed in said lubricating oil by a mixture of dispersants, said mixture comprising 10-99 weight percent of a lipophilic anionic surface-active agent and 90-1 weight percent of a lipophilic nonionic surface-active agent and wherein said mixture of dispersants comprises 0.25 to 5 weight percent of said composition and said neutralized borate comprises 1 to 15 weight percent of said composition.
Claim 4
Dependent Claim
36 words
The composition of claim 2 wherein said lipophilic anionic surface-active agent is an alkaline earth metal sulfonate, phenate, naphthenate or mixture thereof and said lipophilic nonionic surface-active agent is an alkenyl succinimide of an alkylene polyamine.
Claim 5
Dependent Claim
33 words
The composition of claim 3 wherein the alkali metal of said alkali metal borate is sodium or potassium and an aqueous solution of said neutralized borate has a pH of 6.5 to 7.5.
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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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |