Patent US2584086A successfully refreshed from Google Patents.
US2584086A
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Hydraulic fluid composition
Assignee: Shell Development Co
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Filing: 1946-06-08
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Granted: 1952-01-29
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Expires: 1966-06-08
Abstract
No abstract record available.
Inventors
- 👤 Wachter Aaron
- 👤 Stillman Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:35
CPC Classifications
C; C10; C10M; C10M173/00; C09; C09K; C09K5/00; C09K5/08; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/085; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/024; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/044; C10M2207/046; C10M2207/06; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/16; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/402; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/109; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/064; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/10; C10M2215/102; C10M2215/14; C10M2215/16; C10M2215/18; C10M2215/20; C10M2215/202; C10M2215/204; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/08; C10M2219/082; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/06; C10M2223/061; C10M2227/00; C10M2227/08; C10M2227/083; C10N; C10N2010/00; C10N2010/02; C10N2010/08; C10N2010/10; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01; C10N2050/04; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
AS A COMPOSITION OF MATTER, A HYDRAULIC FLUID COMPRISING ESSENTIALLY A PREDOMINANT AMOUNT OF A MIXTURE OF ETHYLENE GLYCOL AND A SUBSTANTIAL AMOUNT GREATER THAN ABOUT 2 WEIGHT PER CENT OF WATER, AND BETWEEN ABOUT 0.01 WEIGHT PER CENT AND ABOUT 30 WEIGHT PER CENT OF A SECONDARY AMINE NITRITE SALT HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 0.0001 MM. OF HG AT 21* C., THE AMOUNT OF SAID SALT BEING BASED UPON THE TOTAL WEIGHT OF SAID COMPOSITION, SAID COMPOSITION HAVING A PH OF AT LEAST ABOUT 6.
Claim 2
Dependent Claim
90 words
AS A COMPOSITION OF MATTER, A HYDRAULIC FLUID COMPRISING ESSENTIALLY A PREDOMINANT AMOUNT OF A MIXTURE OF ETHYLENE GLYCOL AND A SUBSTANTIAL AMOUNT GREATER THAN ABOUT 2 WEIGHT PER CENT OF WATER, AND BETWEEN ABOUT 0.01 WEIGHT PER CENT AND ABOUT 30 WEIGHT PER CENT OF A SECONDARY AMINE NITRITE SALT HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 0.0001 MM. OF HG AT 21* C., THE AMOUNT OF SAID SALT BEING BASED UPON THE TOTAL WEIGHT OF SAID COMPOSITION, SAID COMPOSITION HAVING A PH OF AT LEAST ABOUT 6.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |