US3703390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor encapsulant and method of forming
Assignee: General Electric Co
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Filing: 1971-04-21
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Granted: 1972-11-21
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Expires: 1991-04-21
Abstract
Abstract A GLASS ENCAPSULANT FOR THICK FILM CAPACITORS CAPABLE OF WITHSTANDING CRAZING WHEN THERMALLY CYCLED BETWEEN 240* C. AND -60* C. IS COMPOSED OF AT LEAST 45% BY WEIGHT REFRACTORY METAL OXIDES CHARACTERIZED BY MELTING POINTS ABOVE 1700* C. AND BETWEEN 1-4% BY WEIGHT OF HIGH FLUXING OXIDES OF METALS SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, LEAD AND MIXTURES THEREOF. PREFERABLY, THE REFRACTORY METAL OXIDES COMPRISE A MIXTURE OF ALUMINA, ZIRCONIA AND SILICON DIOXIDE WITH ALUMINA AND ZIRCONIA CUMULATIVELY FORMING AT LEAST 25% BY WEIGHT OF THE REFRACTORY METAL OXIDES.
Inventors
- 👤 Roland T Girard
- 👤 George A Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C3/076; C03C3/11; C03C3/112; C03C3/115; C03C3/118; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/087; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K1/16; H05K1/162; H05K3/00; H05K3/22; H05K3/28
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |