US3709704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic dielectric material comprising barium-sodium-niodium titanate
Assignee: Panasonic Holdings Corp
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Filing: 1970-06-12
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Granted: 1973-01-09
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Expires: 1990-06-12
Abstract
Abstract A CERAMIC MATERIAL IN A PEROVSKITE STRUCTURE HAVING A HIGH DIELECTRIC PERMITTIVITY A LOW POWER FACTOR AND A LOW TEMPERATURE COEFFICIENT TO PERMITTIVITY THE COMPOSITION OF WHICH IS IN A CHEMICAL FORMULA OF BA(NA0.25XNB0.75TI1-X)O3 WHEREIN X RAGES FROM 0.01 TO 0.30 IN ACCORDANCE WITH THE INVENTIONS. THE CERAMIC DIELECTRIC COMPOSITION OF BA(NA0.25XNHB0.75XTI1-X)O3 CAN BE MODIFIED BY SUBSTITUTIONO SR FOR BA OR LI FOR NA IN ACCORDANCE WITH THE INVENTIONS.
Inventors
- 👤 Y Matsuo
- 👤 H Sasaki
- 👤 S Hayakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:51
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H; H01; H01B; H01B3/00; H01B3/02; H01B3/025; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1254; H01G4/1263
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |