US2961404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion lubricant and hydraulic fluid
Assignee: Shell USA Inc
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Filing: 1958-08-18
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Granted: 1960-11-22
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Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 Charles E Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:55
CPC Classifications
C; C10; C10M; C10M173/00; C10M2201/00; C10M2201/02; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/025; C10M2207/026; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/10; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A WATER-IN-OIL EMULSION LUBRICANT AND HYDRAULIC FLUID WHICH IS FROM ABOUT 20% TO ABOUT 45% WATER PHASE AND FROM ABOUT 55% TO ABOUT 80% OIL PHASE, THE OIL PHASE BEING ESENTIALLY A MINERAL OIL HAVING INCORPORATED THEREIN FROM ABOUT 0.5% TO ABOUT 6% EACH, BASED ON THE OIL, OF AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL ORGANIC SULFONATE SELECTED FROM THE GROUP CONSISITING OF ALKALINE EARTH METAL PETROLEUM SULFONATE AND ALKALINE EARTH METAL HAPHTHALENE SULFONATE AND AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL C8-30 ALKYL SALICYLATE AND FROM ABOUT 0.1% TO 2% OF A WATER-SOLUBLE POLUMERIC AMIDE SELECTED FROM THE GROUP CONSISTING OF POLACRYLAMIDE AND POLYVINYL PYRROLIDONE HAVING A MOLECULAR WEIGHT OF FROM 38,000 TO 48,500.
Claim 2
Dependent Claim
114 words
A WATER-IN-OIL EMULSION LUBRICANT AND HYDRAULIC FLUID WHICH IS FROM ABOUT 20% TO ABOUT 45% WATER PHASE AND FROM ABOUT 55% TO ABOUT 80% OIL PHASE, THE OIL PHASE BEING ESENTIALLY A MINERAL OIL HAVING INCORPORATED THEREIN FROM ABOUT 0.5% TO ABOUT 6% EACH, BASED ON THE OIL, OF AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL ORGANIC SULFONATE SELECTED FROM THE GROUP CONSISITING OF ALKALINE EARTH METAL PETROLEUM SULFONATE AND ALKALINE EARTH METAL HAPHTHALENE SULFONATE AND AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL C8-30 ALKYL SALICYLATE AND FROM ABOUT 0.1% TO 2% OF A WATER-SOLUBLE POLUMERIC AMIDE SELECTED FROM THE GROUP CONSISTING OF POLACRYLAMIDE AND POLYVINYL PYRROLIDONE HAVING A MOLECULAR WEIGHT OF FROM 38,000 TO 48,500.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |