US3843542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic oil
Assignee: Chevron USA Inc
•
Filing: 1972-07-31
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Granted: 1974-10-22
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Expires: 1992-07-31
Abstract
Abstract 1. A HYDROCARBON-BASED HYDRAULIC FLUID COMPRISING A MAJOR AMOUNT OF A HYDROCARBON LUBRICATING OIL HAVING A VISCOSITY OF 100 TO 650 SUS AT 100*F. AND CONTAINING FROM 0.1 TO 15 WEIGHT PERCENT ZINC DI(PRIMARY ISO-OCTYL) DITHIOPHOSPHATE AND FROM 0.03 TO 0.2 PARTS OF A C6 TO C24 ALKENYL SUCCINIC ACID PER WEIGHT PART OF SAID ZINC DITHIOPHOSPHATE; WITH THE PROVISO THAT WHEN THE CONCENTRATION OF SAID ZINC DITHIOPHOSPHATE IS FROM 1.0 TO 1.5 WEIGHT PEERCENT THEN 0.01 TO 1 PART OF A METAL DEACTIVATOR SELECTED FROM TRIARYL OR TRIALKYL PHOSPHATES, ARYL OR ALKYL PHOSPHITES, ALKYLPHENOL SULFIDES, PHOSPHORUS PENTASULFIDE-TERPENE ADDITION PRODUCTS, BENZOTRIAZOLE, PHENOTHIAZINE, BISOCTYL DITHIATHIOPHOSPHATE, PHENYL-1-NAPTHYLAMINE OR MIXTURES THEREOF PER PART OF SAID ZIND DITHIOPHOSPHATE IS PRESENT.
Inventors
- 👤 J Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/108; C10M2209/12; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/222; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/02; C10M2227/04; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A HYDROCARBON-BASED HYDRAULIC FLUID COMPRISING A MAJOR AMOUNT OF A HYDROCARBON LUBRICATING OIL HAVING A VISCOSITY OF 100 TO 650 SUS AT 100*F. AND CONTAINING FROM 0.1 TO 15 WEIGHT PERCENT ZINC DI(PRIMARY ISO-OCTYL) DITHIOPHOSPHATE AND FROM 0.03 TO 0.2 PARTS OF A C6 TO C24 ALKENYL SUCCINIC ACID PER WEIGHT PART OF SAID ZINC DITHIOPHOSPHATE; WITH THE PROVISO THAT WHEN THE CONCENTRATION OF SAID ZINC DITHIOPHOSPHATE IS FROM 1.0 TO 1.5 WEIGHT PEERCENT THEN 0.01 TO 1 PART OF A METAL DEACTIVATOR SELECTED FROM TRIARYL OR TRIALKYL PHOSPHATES, ARYL OR ALKYL PHOSPHITES, ALKYLPHENOL SULFIDES, PHOSPHORUS PENTASULFIDE-TERPENE ADDITION PRODUCTS, BENZOTRIAZOLE, PHENOTHIAZINE, BISOCTYL DITHIATHIOPHOSPHATE, PHENYL-1-NAPTHYLAMINE OR MIXTURES THEREOF PER PART OF SAID ZIND DITHIOPHOSPHATE IS PRESENT.
Claim 2
Dependent Claim
115 words
A HYDROCARBON-BASED HYDRAULIC FLUID COMPRISING A MAJOR AMOUNT OF A HYDROCARBON LUBRICATING OIL HAVING A VISCOSITY OF 100 TO 650 SUS AT 100*F. AND CONTAINING FROM 0.1 TO 15 WEIGHT PERCENT ZINC DI(PRIMARY ISO-OCTYL) DITHIOPHOSPHATE AND FROM 0.03 TO 0.2 PARTS OF A C6 TO C24 ALKENYL SUCCINIC ACID PER WEIGHT PART OF SAID ZINC DITHIOPHOSPHATE; WITH THE PROVISO THAT WHEN THE CONCENTRATION OF SAID ZINC DITHIOPHOSPHATE IS FROM 1.0 TO 1.5 WEIGHT PEERCENT THEN 0.01 TO 1 PART OF A METAL DEACTIVATOR SELECTED FROM TRIARYL OR TRIALKYL PHOSPHATES, ARYL OR ALKYL PHOSPHITES, ALKYLPHENOL SULFIDES, PHOSPHORUS PENTASULFIDE-TERPENE ADDITION PRODUCTS, BENZOTRIAZOLE, PHENOTHIAZINE, BISOCTYL DITHIATHIOPHOSPHATE, PHENYL-1-NAPTHYLAMINE OR MIXTURES THEREOF PER PART OF SAID ZIND DITHIOPHOSPHATE IS PRESENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |