US2520376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layerized high dielectric constant piece for capacitors and process of making the same
Assignee: Globe Union Inc
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Filing: 1948-05-22
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Granted: 1950-08-29
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Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Rolland R Roup
- 👤 Charles E Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
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; H01G4/1272; Y; Y10; Y10S; Y10S264/00; Y10S264/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR MAKING A CERAMIC DIELECTRIC PIECE HAVING A HIGH DIELECTRIC CONSTANT AND A HIGH RESISTANCE COMPRISING MIXING AN ALKALINE EARTH TITANATE WITH A SMALL AMOUNT OF A RARE EARTH OXIDE TO ACT AS A REDUCING CATALYST, SHAPING THE MIXTURE INTO A PIECE OF DESIRED FORM, AND FIRING THE PIECE WITH ONE PORTION SUBJECT TO AN
Claim 2
Dependent Claim
57 words
A PROCESS FOR MAKING A CERAMIC DIELECTRIC PIECE HAVING A HIGH DIELECTRIC CONSTANT AND A HIGH RESISTANCE COMPRISING MIXING AN ALKALINE EARTH TITANATE WITH A SMALL AMOUNT OF A RARE EARTH OXIDE TO ACT AS A REDUCING CATALYST, SHAPING THE MIXTURE INTO A PIECE OF DESIRED FORM, AND FIRING THE PIECE WITH ONE PORTION SUBJECT TO AN
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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |