US3361669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for lubricating diesel engines having dual lubricating systems
Assignee: Shell USA Inc
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Filing: 1965-04-27
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Granted: 1968-01-02
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hendrik A Van Westen
- 👤 Zijden Martinus J Van Der
- 👤 Johannes W A Schrakamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:15
CPC Classifications
C; C10; C10M; C10M161/00; C10M2201/00; C10M2201/06; C10M2201/062; C10M2201/063; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2203/00; C10M2203/10; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2205/04; C10M2205/06; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/26; C10M2207/262; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/252; C10N2040/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PROCESS FOR LUBRICATING THE CYLINDER WALL OF DIESEL ENGINES OPERATING ON HIGH SULFUR FUEL AND HAVING TOW SEPARATE LUBRICATING SYSTEMS COMPRISING INJECTING ONTO THE CYLINDER WALL A ONCE-THROUGH MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL DISTILLATE FRACTION HAVING A BOILING POINT RANGE OF FROM 350 TO 550*C. AND A VISCOSITY INDEX ABOUT 30 AND HAVING INCORPORATED THEREIN FROM 0.01 TO 0.5 EQUIVALENT OF ALKALINE EARTH METAL PER 100 GRAMS OF LUBRICATING OIL OF ALKALINE EARTH METAL CARBONATE; FROM 0.05 TO 0.5 EQUIVALENT OF AN OIL-SOLUBLE ALKALINE EARTH METAL SALT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL NAPHTHENATE AND ALKYL SALICYLATE PER EQUIVALENT OF ALKALINE EARTH METAL CARBONATE, AND FROM 0.1 TO 10% OF AN OLEFINIC POLYMER SELECTED FROM THE GROUP CONSISTING OF OLEFINIC HYDROCARBON POLYMER, C4-18 ALKYL METHACRYLATE POLYMER, AND VINYL ESTER OF C9-18 ALIPHATIC MONOCARBOXYLIC ACID POLYMER, HAVING A MOLECULAR WEIGHT OF FROM 500 TO 2,000,000.
Claim 2
Dependent Claim
155 words
A PROCESS FOR LUBRICATING THE CYLINDER WALL OF DIESEL ENGINES OPERATING ON HIGH SULFUR FUEL AND HAVING TOW SEPARATE LUBRICATING SYSTEMS COMPRISING INJECTING ONTO THE CYLINDER WALL A ONCE-THROUGH MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL DISTILLATE FRACTION HAVING A BOILING POINT RANGE OF FROM 350 TO 550*C. AND A VISCOSITY INDEX ABOUT 30 AND HAVING INCORPORATED THEREIN FROM 0.01 TO 0.5 EQUIVALENT OF ALKALINE EARTH METAL PER 100 GRAMS OF LUBRICATING OIL OF ALKALINE EARTH METAL CARBONATE; FROM 0.05 TO 0.5 EQUIVALENT OF AN OIL-SOLUBLE ALKALINE EARTH METAL SALT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL NAPHTHENATE AND ALKYL SALICYLATE PER EQUIVALENT OF ALKALINE EARTH METAL CARBONATE, AND FROM 0.1 TO 10% OF AN OLEFINIC POLYMER SELECTED FROM THE GROUP CONSISTING OF OLEFINIC HYDROCARBON POLYMER, C4-18 ALKYL METHACRYLATE POLYMER, AND VINYL ESTER OF C9-18 ALIPHATIC MONOCARBOXYLIC ACID POLYMER, HAVING A MOLECULAR WEIGHT OF FROM 500 TO 2,000,000.
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |