US3062747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic brake fluids
Assignee: Union Carbide Corp
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Filing: 1960-06-23
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Granted: 1962-11-06
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Expires: 1980-06-23
Abstract
No abstract record available.
Inventors
- 👤 Geraldine H Fife
- 👤 Richard W Shifiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:42
CPC Classifications
C; C10; C10M; C10M3/00; C10M2201/00; C10M2201/087; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/024; C10M2207/04; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A METHOD FOR APPLYING PRESSURE TO A HYDRAULIC BRAKE THROUGH A HYDRAULIC BRAKE FLUID, THE IMPROVEMENT WHEREIN SAID HYDRAULIC BRAKE FLUID CONSISTS ESSENTIALLY OF A POLY(OXYETHYLENE-OXY-1,2-PROPYLENE) GLYCOL MONOALKYL ETHER (A) HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 175 TO ABOUT 325, (B) IN WHICH THERE IS PRESENT AN AVERAGE OF FROM ABOUT 3 TO ABOUT 5 OXYETHYLENE GROUPS PER MOLEUCLE, (C) IN WHICH THE OXYETHYLENE GROUPS AND OXY-1,2-PROPYLENE GROUPS ARE EACH PRESENT IN A PROPORTION OF FROM ABOUT 35 PERCENT TO ABOUT 65 PERCENT BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF THE OXYALKYLENE GROUPS PRESENT, AND (D) IN WHICH THE TERMINAL ALKYL RADICAL IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL RADICALS.
Claim 2
Dependent Claim
117 words
IN A METHOD FOR APPLYING PRESSURE TO A HYDRAULIC BRAKE THROUGH A HYDRAULIC BRAKE FLUID, THE IMPROVEMENT WHEREIN SAID HYDRAULIC BRAKE FLUID CONSISTS ESSENTIALLY OF A POLY(OXYETHYLENE-OXY-1,2-PROPYLENE) GLYCOL MONOALKYL ETHER (A) HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 175 TO ABOUT 325, (B) IN WHICH THERE IS PRESENT AN AVERAGE OF FROM ABOUT 3 TO ABOUT 5 OXYETHYLENE GROUPS PER MOLEUCLE, (C) IN WHICH THE OXYETHYLENE GROUPS AND OXY-1,2-PROPYLENE GROUPS ARE EACH PRESENT IN A PROPORTION OF FROM ABOUT 35 PERCENT TO ABOUT 65 PERCENT BY WEIGHT, BASED UPON THE TOTAL WEIGHT OF THE OXYALKYLENE GROUPS PRESENT, AND (D) IN WHICH THE TERMINAL ALKYL RADICAL IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL RADICALS.
References Cited (Backward Citations)
CA534750A
Cited
US2425755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |