US2815291A
Expired / Lapsed
US
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Ceramic condenser dielectric
Assignee: Zenith Electronics LLC
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Filing: 1955-09-06
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Granted: 1957-12-03
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Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Alvin L Rogatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:16
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1236; H01G4/1245; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H01G4/129
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A CERAMIC DIELECTRIC MATERIAL CONSISTING ESSENTIALLY OF NON-STOICHIOMETRIC BARIUM-TITANATE, HAVING AN EXCESS OF BARIUM OXIDE IN THE AMOUNT OF SIX PERCENT BY WEIGHT OF SAID NON-STOICHIOMETRIC BARIUM TITANATE, IN THE AMOUNT OF 83.35% BY WEIGHT, CALCIUM TITANATE IN THE AMOUNT OF 8.4% BY WEIGHT, STRONTIUM TITANATE IN THE AMOUNT OF 2.9% BY WEIGHT, MAGNESIUM ZIRCONATE IN THE AMOUNT OF 2.3% BY WEIGHT, AND THE REMAINDER FLUX.
References Cited (Backward Citations)
US2467169A
Cited
US2563307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |