Patent US2758976A successfully refreshed from Google Patents.
US2758976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonflammable hydraulic fluid
Assignee: Atlas Powder Co
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Filing: 1953-03-09
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Granted: 1956-08-14
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Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 George E Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:22
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/109; C10N; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A HYDRAULIC FLUID COMPOSITION EXHIBITING A VISCOSITY-TEMPERATURE SLOPE OF NOT MORE THAN 0.49 ON CHART E OF THE AMERICAN SOCIETY FOR TESTING MATERIALS SPECIFICCATION D341 AND CONSISTING ESSENTIALLY OF A SOLUTION OF FROM 10% TO 30% BY WEIGHT OF THE CONDENSATION PRODDUCT OF 28 MOLAR PROPORTIONS OF ETHYLENE OXIDE WITH ONE MOLAR PROPORTION OF A DIMERIZED, 18-CARBON, POLYUNSATURATED FATTY ACID IN AN AQUEOUS ETHYLENE GLYCOL CONTAINING FROM 50% TO 70% BY WEIGHT OF ETHYLENE GLYCOL AND CORRESPONDINGLY FROM 50% TO 30% BY WEIGHT OF WATER.
Claim 2
Dependent Claim
85 words
A HYDRAULIC FLUID COMPOSITION EXHIBITING A VISCOSITY-TEMPERATURE SLOPE OF NOT MORE THAN 0.49 ON CHART E OF THE AMERICAN SOCIETY FOR TESTING MATERIALS SPECIFICCATION D341 AND CONSISTING ESSENTIALLY OF A SOLUTION OF FROM 10% TO 30% BY WEIGHT OF THE CONDENSATION PRODDUCT OF 28 MOLAR PROPORTIONS OF ETHYLENE OXIDE WITH ONE MOLAR PROPORTION OF A DIMERIZED, 18-CARBON, POLYUNSATURATED FATTY ACID IN AN AQUEOUS ETHYLENE GLYCOL CONTAINING FROM 50% TO 70% BY WEIGHT OF ETHYLENE GLYCOL AND CORRESPONDINGLY FROM 50% TO 30% BY WEIGHT OF WATER.
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) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |