US2915407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic electrical bodies
Assignee: Gulton Industries Inc
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Filing: 1957-03-11
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Granted: 1959-12-01
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Leslie K Gulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/105; H01C7/108; H01C7/115; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/51; H01C7/02; H01C7/022; H01C7/04; H01C7/042; H01C7/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A NEW AND IMPROVED CERAMIC BODY HAVING INCREASED INSULATION RESISTANCE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF A SOLID SOLUTION OF LEAD TITANATE AND LEAD ZIRCONATE IN WHICH THE LEAD TITANATE IS PRESENT IN PROPORTIONS WITHIN THE RANGE OF 10 TO 95 MOL PERCENT, CONSISTING ESSENTIALLY OF A COMPRESSED SUBSTANTIALLY HOMOGENEOUS FIRED BODY OF A MIXTURE OF A LEAD OXIDE, ZRO2 AND TIO2, IN REQUISITE PROPORTIONS TO PRODUCE THE AFORESAID SOLID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE, SAID MIXTURE ALSO INCLUDING FROM 0.5% TO 7%, BY WEIGHT OF SAID MIXTURE, OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CERIUM OXIDES AND COLUMBIUM OXIDES, SAID FINAL MIXTURE HAVING BEEN SUBJECTED TO A PRESSURE OF AT LEAST 75 POUNDS PER SQUARE INCH DURING THE FIRING OPERATION.
Claim 2
Dependent Claim
127 words
A NEW AND IMPROVED CERAMIC BODY HAVING INCREASED INSULATION RESISTANCE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF A SOLID SOLUTION OF LEAD TITANATE AND LEAD ZIRCONATE IN WHICH THE LEAD TITANATE IS PRESENT IN PROPORTIONS WITHIN THE RANGE OF 10 TO 95 MOL PERCENT, CONSISTING ESSENTIALLY OF A COMPRESSED SUBSTANTIALLY HOMOGENEOUS FIRED BODY OF A MIXTURE OF A LEAD OXIDE, ZRO2 AND TIO2, IN REQUISITE PROPORTIONS TO PRODUCE THE AFORESAID SOLID SOLUTIONS OF LEAD TITANATE AND LEAD ZIRCONATE, SAID MIXTURE ALSO INCLUDING FROM 0.5% TO 7%, BY WEIGHT OF SAID MIXTURE, OF AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CERIUM OXIDES AND COLUMBIUM OXIDES, SAID FINAL MIXTURE HAVING BEEN SUBJECTED TO A PRESSURE OF AT LEAST 75 POUNDS PER SQUARE INCH DURING THE FIRING OPERATION.
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) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |