US3713853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic dielectric materials of perovskite barium-lead sodium niobate
Assignee: Individual
•
Filing: 1970-06-12
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Granted: 1973-01-30
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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 COEFFICENT OF PERMITTIVITY, THE COMPOSITION OF WHICH IS IN A CHEMICAL FORMULA OF (BAXPB1-X) (NA0.25NB0.75)O3 WHEREIN X RANGES FROM 0.40 TO 0.95 IN ACCORDANCE WITH THE INVENTIONS. THE CERAMIC DIELECTRIC COMPOSITION OF (BAXPB1-X) (NA0.25NB0.75)O3 CAN BE MODIFIED BY SUBSTITUTION OF 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
2026-11-05 00:16
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1254; C; C04; C04B; C04B35/00; C04B35/01; C04B35/495; C04B35/497
Claims Analysis
Total Claims: 0
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |