US2960411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric ceramic compositions
Assignee: Clevite Corp
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Filing: 1958-08-25
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Granted: 1960-11-15
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Brajer
- 👤 Kulcsar Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1236; H01G4/1245; H01G4/1254; H01G4/1263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A POLYCRYSTALLINE DIELECTRIC CERAMIC COMPOSITION HAVING THE TYPE FORMULA ABO3, A CONSISTING, IN MOL FRACTIONS, OF: 0.60 TO 0.75 LEAD, 0.25 TO 0.40 OF AT LEAST ONE ALKALINE EARTH ELEMENT FROM THE GROUP CONSISTING OF STRONTIUM AND CALCIUM, THE MOL FRACTIONS OF LEAD AND ALKALINE EARTH ELEMENTS TOTALING AT LEAST 0.96, ANY BALANCE OF A BEING COMPOSED ESSENTIALLY OF AT LEAST ONE RARE EARTH ELEMENT, B CONSISTING, IN MOL FRACTIONS, OF: 0.25 TO 0.55 TITANIUM, 0.45 TO 0.75 ZIRCONIUM TOTALING AT LEAST 0.96, ANY BALANCE AND ZIRCONIUM TOTALING AT LEAST 0.96, ANY BALANCE OF B BEING COMPOSED ESSENTIALLY OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF NIOBIUM AND TANTALUM.
Claim 2
Dependent Claim
111 words
A POLYCRYSTALLINE DIELECTRIC CERAMIC COMPOSITION HAVING THE TYPE FORMULA ABO3, A CONSISTING, IN MOL FRACTIONS, OF: 0.60 TO 0.75 LEAD, 0.25 TO 0.40 OF AT LEAST ONE ALKALINE EARTH ELEMENT FROM THE GROUP CONSISTING OF STRONTIUM AND CALCIUM, THE MOL FRACTIONS OF LEAD AND ALKALINE EARTH ELEMENTS TOTALING AT LEAST 0.96, ANY BALANCE OF A BEING COMPOSED ESSENTIALLY OF AT LEAST ONE RARE EARTH ELEMENT, B CONSISTING, IN MOL FRACTIONS, OF: 0.25 TO 0.55 TITANIUM, 0.45 TO 0.75 ZIRCONIUM TOTALING AT LEAST 0.96, ANY BALANCE AND ZIRCONIUM TOTALING AT LEAST 0.96, ANY BALANCE OF B BEING COMPOSED ESSENTIALLY OF AT LEAST ONE ELEMENT FROM THE GROUP CONSISTING OF NIOBIUM AND TANTALUM.
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) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |