Patent US2507401A successfully refreshed from Google Patents.
US2507401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake fluid
Assignee: Wagner Electric Corp
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Filing: 1948-01-19
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Granted: 1950-05-09
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Expires: 1968-01-19
Abstract
No abstract record available.
Inventors
- 👤 George L Doelling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
C; C10; C10M; C10M3/00; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2201/085; C10M2201/087; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/283; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN OPERATING FLUID FOR PRESSURE APPARATUS COMPRISING PER 100 PARTS BY VOLUME, FROM 10 TO 25 PARTS BY VOLUME OF A LUBRICANT SELECTED FROM THE GROUP CONSIST5ING OF THE MONO- AND DI-RICINOLEATES OF THE ALIPHATIC GLYCOLS HAVING THE FORMULA HO-CNH2N-OH, IN WHICH N IS AN INTEGER FROM 2 TO 4, INCLUSIVE, FROM 3 TO 15 PARTS BY VOLUME OF AN ALIPHATIC GLYCOL HAVING THE FORMULA HO-CAH2N-OH, IN WHICH N IS AN INTEGER FROM 2 TO 4, INCLUSIVE, FROM 10 TO 24 PARTS BY VOLUME OF 2-METHYL-2, 4-PENTANE DIOL, FROM 45 TO 70 PARTS BY VOLUME OF A DILUENT SELECTED FROM THE GROUP CONSISTING OF THE PROPYL ALCOHOLS, THE BUTYL ALCOHOLS, THE AMYL ALCOHOLS,, METHOXY-METHOXY ETHANOL, AND THE LOWER MONO-ALKYL ETHERS OF ETHYLENE GLYCOL, DIETHYLENE GLYCOL, PROPYLENE GLYCOL AND DI-PROPYLENE GLYCOL, AND A SMALL BUT EFFECTIVE AMOUNT OF CORROSION INHIBITOR.
Claim 2
Dependent Claim
139 words
AN OPERATING FLUID FOR PRESSURE APPARATUS COMPRISING PER 100 PARTS BY VOLUME, FROM 10 TO 25 PARTS BY VOLUME OF A LUBRICANT SELECTED FROM THE GROUP CONSIST5ING OF THE MONO- AND DI-RICINOLEATES OF THE ALIPHATIC GLYCOLS HAVING THE FORMULA HO-CNH2N-OH, IN WHICH N IS AN INTEGER FROM 2 TO 4, INCLUSIVE, FROM 3 TO 15 PARTS BY VOLUME OF AN ALIPHATIC GLYCOL HAVING THE FORMULA HO-CAH2N-OH, IN WHICH N IS AN INTEGER FROM 2 TO 4, INCLUSIVE, FROM 10 TO 24 PARTS BY VOLUME OF 2-METHYL-2, 4-PENTANE DIOL, FROM 45 TO 70 PARTS BY VOLUME OF A DILUENT SELECTED FROM THE GROUP CONSISTING OF THE PROPYL ALCOHOLS, THE BUTYL ALCOHOLS, THE AMYL ALCOHOLS,, METHOXY-METHOXY ETHANOL, AND THE LOWER MONO-ALKYL ETHERS OF ETHYLENE GLYCOL, DIETHYLENE GLYCOL, PROPYLENE GLYCOL AND DI-PROPYLENE GLYCOL, AND A SMALL BUT EFFECTIVE AMOUNT OF CORROSION INHIBITOR.
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) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |