Patent US2563307A successfully refreshed from Google Patents.
US2563307A
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High dielectric ceramic material and method of making
Assignee: Sprague Electric Co
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Filing: 1944-06-14
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Granted: 1951-08-07
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Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Burnham John
- 👤 Dippold Arthur James
- 👤 Robinson Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:21
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A CREAMIC COMPOSITION POSSESSING AN AVERAGE DIELECTRIC CONSTANT OVER 1500, LOW POWER FACTOR AND NEGLIGIBLE TEMPERATURE AND ELECTRICAL FREQUENCY COEFFICIENTS OF DIELECTRIC CONSTANT AND POWER FACTOR, COMPRISING A MIXTURE OF SUBSTANTIAL PROPORTIONS OF PARTICLES OF AT LEAST TWO DISSIMILAR HOMOGENEOUS SOLID SOLUTIONS OF BARIUM AND STRONTIUM TITANATE, IN EACH OF WHICH THE BARIUM TITANATE PREDOMINATES, SAID PARTICLES BEING SUBSTANTIALLY FUSED TOGETHER ONLY ON THE SURFACES THEREOF.
Claim 2
Dependent Claim
66 words
A CREAMIC COMPOSITION POSSESSING AN AVERAGE DIELECTRIC CONSTANT OVER 1500, LOW POWER FACTOR AND NEGLIGIBLE TEMPERATURE AND ELECTRICAL FREQUENCY COEFFICIENTS OF DIELECTRIC CONSTANT AND POWER FACTOR, COMPRISING A MIXTURE OF SUBSTANTIAL PROPORTIONS OF PARTICLES OF AT LEAST TWO DISSIMILAR HOMOGENEOUS SOLID SOLUTIONS OF BARIUM AND STRONTIUM TITANATE, IN EACH OF WHICH THE BARIUM TITANATE PREDOMINATES, SAID PARTICLES BEING SUBSTANTIALLY FUSED TOGETHER ONLY ON THE SURFACES THEREOF.
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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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |