Patent US3734181A successfully refreshed from Google Patents.
US2803605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake fluid
Assignee: Wagner Electric Corp
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Filing: 1954-05-12
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Granted: 1957-08-20
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 George L Doelling
- 👤 Chester B Swander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:12
CPC Classifications
C; C10; C10M; C10M3/00; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2201/085; C10M2201/087; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/28; C10M2207/283; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/402; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A HYDRAULIC BRAKE FLUID COMPRISING, PER 100 PARTS BY VOLUME, FROM 15 TO 35 PARTS BY VOLUME OF A HEXANOL CHOSEN FROM THE GROUP CONSISTING OF METHYL ISOBUTYL CARBINOL AND 2-ETHYL BUTYL ALCOHOL, FROM 20 TO 45 PARTS BY VOLUME OF THE MONO-ETHYL ETHER OF DIETHYLENE GLYCOL, FROM 5 TO 20 PARTS BY VOLUME OF PROPYLENE GLYCOL MONO-RICINO LEATE, FROM 5 TO 20 PARTS BY VOLUME OF A SUBSTANTIALLY WATER-INSOLUBLE POLYPROPYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 1000 AND 3000, FROM 5 TO 25 PARTS BY VOLUME OF AT LEAST ONE GLYCOL CHOSEN FROM THE GROUP CONSISTING OF PROPYLENE GLYCOL AND HEXYLENE GLYCOL TOGETHER WITH A SMALL BUT EFFECTIVE AMOUNT OF A CORROSIONINHIBITOR.
Claim 2
Dependent Claim
114 words
A HYDRAULIC BRAKE FLUID COMPRISING, PER 100 PARTS BY VOLUME, FROM 15 TO 35 PARTS BY VOLUME OF A HEXANOL CHOSEN FROM THE GROUP CONSISTING OF METHYL ISOBUTYL CARBINOL AND 2-ETHYL BUTYL ALCOHOL, FROM 20 TO 45 PARTS BY VOLUME OF THE MONO-ETHYL ETHER OF DIETHYLENE GLYCOL, FROM 5 TO 20 PARTS BY VOLUME OF PROPYLENE GLYCOL MONO-RICINO LEATE, FROM 5 TO 20 PARTS BY VOLUME OF A SUBSTANTIALLY WATER-INSOLUBLE POLYPROPYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT BETWEEN 1000 AND 3000, FROM 5 TO 25 PARTS BY VOLUME OF AT LEAST ONE GLYCOL CHOSEN FROM THE GROUP CONSISTING OF PROPYLENE GLYCOL AND HEXYLENE GLYCOL TOGETHER WITH A SMALL BUT EFFECTIVE AMOUNT OF A CORROSIONINHIBITOR.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |