US2521402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid media for operation of hydraulic mechanisms
Assignee: Standard Oil Development Co
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Filing: 1947-07-30
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Granted: 1950-09-05
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Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 Osborn Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:47
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; C10M2209/104; C10M2209/108; C10M2209/109; C10N; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A NON-INFLAMMABLE LIQUID COMPOSITION OF MATTER FREEZING BELOW-60*F. AND ESPECIALLY SUITED FOR USE IN HYDRAULIC MECHANISMS WHICH CONSISTS OF A MIXTURE OF FROM 50 PERCENT TO 65 PERCENT BY VOLUME OF ETHYLENE GLYCOL AND 50 PERCENT TO 35 PERCENT BY VOLUME OF WATER WITH FROM 5 PERCENT TO 40 PERCENT BY VOLUME, BASED ON THE GLYCOL/WATER MIXTURE, OF A POLYOXYALKYLENE DERIVATIVE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SORBITAN MONOLAURATE AND SORBITAN MONOOLEATE AS A VISCOSITY INCREASING AGENT AT 100*F. AND MIXTURES THEREOF.
Claim 2
Dependent Claim
85 words
A NON-INFLAMMABLE LIQUID COMPOSITION OF MATTER FREEZING BELOW-60*F. AND ESPECIALLY SUITED FOR USE IN HYDRAULIC MECHANISMS WHICH CONSISTS OF A MIXTURE OF FROM 50 PERCENT TO 65 PERCENT BY VOLUME OF ETHYLENE GLYCOL AND 50 PERCENT TO 35 PERCENT BY VOLUME OF WATER WITH FROM 5 PERCENT TO 40 PERCENT BY VOLUME, BASED ON THE GLYCOL/WATER MIXTURE, OF A POLYOXYALKYLENE DERIVATIVE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SORBITAN MONOLAURATE AND SORBITAN MONOOLEATE AS A VISCOSITY INCREASING AGENT AT 100*F. AND MIXTURES THEREOF.
References Cited (Backward Citations)
US1898564A
Cited
US1928956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |