US3049431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic material of high dielectric strength containing barium titanate and method of manufacturing
Assignee: General Electric Co
•
Filing: 1959-12-07
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Granted: 1962-08-14
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Virginia A Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:53
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: 2
Claim 1
Independent Claim
115 words
A METHOD OF IMPROVING THE DIELECTRIC STRENGTH AND DIELECTRIC CONSTANT OF A CERAMIC SOLID MATERIAL CONTAINING AT LEAST 60% BARIUM TITANATE COMPRISING THE STEPS OF FIRING THE SOLID IN AN OXYGEN ATMOSPHERE, SUBSTANTIALLY DECREASING THE OXYGEN CONTENT OF THE ATMOSPHERE AT A PREDETERMINED TEMPERATURE BEFORE ATTAINING A MAXIMUM HEATING TEMPERATURE, SAID MAXIMUM HEATING TEMPERATURES BEING SELECTED AT A POINT WHERE THE SINTERING ACTION IS SUBSTANTIALLY COMPLETED SO THAT THE MATERIAL DENSITY IS MADE A MAXIMUM WITHOUT CAUSING AN APPRECIABLE INCREASE IN THE GRAIN SIZE OF THE MATERIAL, FINALLY SOAKING IN SAID DECREASED OXYGEN CONTENT ATMOSPHERE AT SAID MAXIMUM HEATING TEMPERATURE, AND FINALLY COOLING THE SOLID IN AN INERT ATMOSPHERE FOR THE REMOVAL OF EXCESS OXYGEN.
Claim 2
Independent Claim
115 words
A METHOD OF IMPROVING THE DIELECTRIC STRENGTH AND DIELECTRIC CONSTANT OF A CERAMIC SOLID MATERIAL CONTAINING AT LEAST 60% BARIUM TITANATE COMPRISING THE STEPS OF FIRING THE SOLID IN AN OXYGEN ATMOSPHERE, SUBSTANTIALLY DECREASING THE OXYGEN CONTENT OF THE ATMOSPHERE AT A PREDETERMINED TEMPERATURE BEFORE ATTAINING A MAXIMUM HEATING TEMPERATURE, SAID MAXIMUM HEATING TEMPERATURES BEING SELECTED AT A POINT WHERE THE SINTERING ACTION IS SUBSTANTIALLY COMPLETED SO THAT THE MATERIAL DENSITY IS MADE A MAXIMUM WITHOUT CAUSING AN APPRECIABLE INCREASE IN THE GRAIN SIZE OF THE MATERIAL, FINALLY SOAKING IN SAID DECREASED OXYGEN CONTENT ATMOSPHERE AT SAID MAXIMUM HEATING TEMPERATURE, AND FINALLY COOLING THE SOLID IN AN INERT ATMOSPHERE FOR THE REMOVAL OF EXCESS OXYGEN.
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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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |