US2902450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: California Research LLC
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Filing: 1954-12-27
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Granted: 1959-09-01
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Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:58
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/108; C10M2209/109; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/06; C10M2223/065; C10M2227/00; C10M2227/02; C10M2227/06; C10M2227/061; C10M2227/062; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2040/00; C10N2040/06; C10N2040/08; C10N2040/135; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A MINERAL LUBRICATING OIL FOR INTERNAL COMBUSTION ENGINES CONTAINING MINOR AMOUNTS OF BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE AND BASIC SULFURIZED ALKALINE EARTH METAL ALKYL PHENATE WHICH IS NORMALLY CORROSIVE TO ALLOY BEARINGS AND A MINOR PORTION, SUFFICIENT TO INHIBIT CORROSION F A P-XYLYLENEDIAMINE SALT OF A DIGLYCOL BORIC ACID IN WHICH THE GLYCOL GROUPS ARE IDENTICAL A-AND B-GLYCOL GROUPS CONTAINING FROM 6 TO 10 CARBON ATOMS IN EACH GLYCOL GROUP.
Claim 2
Dependent Claim
81 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A MINERAL LUBRICATING OIL FOR INTERNAL COMBUSTION ENGINES CONTAINING MINOR AMOUNTS OF BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE AND BASIC SULFURIZED ALKALINE EARTH METAL ALKYL PHENATE WHICH IS NORMALLY CORROSIVE TO ALLOY BEARINGS AND A MINOR PORTION, SUFFICIENT TO INHIBIT CORROSION F A P-XYLYLENEDIAMINE SALT OF A DIGLYCOL BORIC ACID IN WHICH THE GLYCOL GROUPS ARE IDENTICAL A-AND B-GLYCOL GROUPS CONTAINING FROM 6 TO 10 CARBON ATOMS IN EACH GLYCOL GROUP.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |