US3427247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroviscous compositions
Assignee: Textron Inc
•
Filing: 1965-08-02
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Granted: 1969-02-11
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:45
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/001; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/062; C10M2201/10; C10M2201/105; C10M2201/16; C10M2201/18; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/124; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/08; C10M2215/082; C10M2215/16; C10M2215/20; C10M2215/202; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
164 words
AN ELECTROVISCOUS COMPOSITION CONSISTING ESSENTIALLY OF A QUANTITY OF A FINELY DIVIDED NON-CONDUCTIVE SOLID SELECTED FROM THE GROUP CONSISTING OF PYROGENIC SILICA, AND CORUNDUM HAVING A MEAN PARTICLE DIAMETER NO GREATER THAN 0.1 MICRON, AND BASED UPON THE WEIGHT OF THE SOLID, AT LEAST 1% OF A HYDROGEN BONDING ACID SELECTED FROM THE GROUP CONSISTING OF ACETIC ACID, FORMIC ACID, LACTIC ACID, MALIC ACID, MALONIC ACID, OCTANOIC ACID, OXALIC ACID, PYRUVIC ACID, AND TRICHLOROACETIC ACID, AT LEAST 1% OF A HYDROGEN BONDING BASE SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHYL ALCOHOL, GLYCEROL, ETHYLENE GLYCOL, DIETHYLENE GLYCOL SORBITOL, GUAIACOL, ACETAMIDE, FORMAMIDE, ANILINE, ETHYLENEDIAMINE, TRIETHANOLAMINE, HYDROXYETHYLCYCLOHEXYLAMINE, CYANOETHYLCYCLOHEXYLAMINE, PHENYLCYCLOHESYLAMINE, BENZOPHENONE, PHENOL, RESORCINOL, PYRIDINE, AND AMMONIUM HYDROXIDE, THE TOTAL QUANTITY OF SAID SOLID, ACID AND BASE NOT EXCEEDING 35% OF THE TOTAL WEIGHT OF THE COMPOSITION, AND THE REMAINDER BEING A DIELECTRIC LIQUID VEHICLE SELECTED FROM THE GROUP CONSISTING OF CARBON TETRACHLORIDE, XYLENE, SILICONE OIL WITH A VISCOSITY OF 0.49 CENTIPOISE, A LIQUID FLUOROCARBON HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |