US3035927A
Expired / Lapsed
US
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Ceramic dielectric compositions
Assignee: NL Industries Inc
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Filing: 1959-12-31
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Granted: 1962-05-22
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Anthony D Janulionis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:21
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; H01G4/1218; H01G4/1227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A CERAMIC DIELECTRIC BODY FORMED FROM BARIUM TITANATE, IN WHICH THERE IS A TIO2 EXCESS OVER THE STOICHIOMETRIC AMOUNT REQUIRED FOR BARIUM METATITANATE OF FROM ABOUT 0.3% TO ABOUT 1%, AND CERIUM OXIDE, SAID BODY HAVING A DIELECTRIC CONSTANT AT 25* C. AND 1 MEGACYCLE OF FROM ABOUT 1900 TO ABOUT 2500 AND A NEGLIGIBLE TEMPERATURE COEFFICIENT OF CAPACITY BETWEEN 15*C. AND 85*C., THE CERIUM OXIDE BEING PRESENT IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 1.0% TO 0.85% OF THE BODY.
Claim 2
Dependent Claim
82 words
A CERAMIC DIELECTRIC BODY FORMED FROM BARIUM TITANATE, IN WHICH THERE IS A TIO2 EXCESS OVER THE STOICHIOMETRIC AMOUNT REQUIRED FOR BARIUM METATITANATE OF FROM ABOUT 0.3% TO ABOUT 1%, AND CERIUM OXIDE, SAID BODY HAVING A DIELECTRIC CONSTANT AT 25* C. AND 1 MEGACYCLE OF FROM ABOUT 1900 TO ABOUT 2500 AND A NEGLIGIBLE TEMPERATURE COEFFICIENT OF CAPACITY BETWEEN 15*C. AND 85*C., THE CERIUM OXIDE BEING PRESENT IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 1.0% TO 0.85% OF THE BODY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |