Patent US2542785A successfully refreshed from Google Patents.
US2542785A
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Hydraulic fluids
Assignee: EIDP Inc
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Filing: 1947-12-29
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Granted: 1951-02-20
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Expires: 1967-12-29
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
C; C10; C10M; C10M111/00; C10M111/02; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/04; C10M2207/046; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/12; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A HYDRAULIC FLUID CONSSTING OF 40% BY VOLUME OF DI(ETHYLENE GLYCOL) GLUTARATE AND 60% BY VOLUME OF ISOBUTANOL.
Claim 2
Dependent Claim
18 words
A HYDRAULIC FLUID CONSSTING OF 40% BY VOLUME OF DI(ETHYLENE GLYCOL) GLUTARATE AND 60% BY VOLUME OF ISOBUTANOL.
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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |