US3788867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Batio3-mgo-nb2o5 dielectric ceramic compositions and method
Assignee: NL Industries Inc
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Filing: 1971-11-01
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Granted: 1974-01-29
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Expires: 1991-11-01
Abstract
Abstract BISMUTH-FREE, DIELECTRIC CERAMIC COMPOSITIONS CONSISTING ESSENTIALLY OF FROM APPROXIMATELY 97 MOL PERCENT TO APPROXIMATELY 82 MOL PERCENT BATIO3, THE BALANCE BEING MGO AND NB2O5 IN A MOL RATIO OF FROM ABOUT 1:1 TO 1:2, MAY BE FIRED AT TEMPERATURES IN THE RANGE FROM ABOUT 1300*C. TO 1400*C. TO PRODUCE USEFUL DIELECTRIC CERAMIC BODIES INCLUDING MONOLITHIC CAPACITORS. THE RESULTANT BODIES HAVE RELATIVELY LOW TEMPERATURE COEFFICIENTS, LOW DISSIPATION FACTORS, AND VARY IN RELATIVE PERMITTIVITY FROM ABOUT 300 TO ABOUT 2000. THE PERMITTIVITY MAY BE CONTROLLED BY ADJUSTING THE MOL PERCENTAGE OF MGO AND NB2O5 IN THE COMPOSITION.
Inventors
- 👤 T Rutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:42
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |