US4585745A
Expired / Lapsed
US
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Dielectric ceramic composition for high frequency purposes
Assignee: Niterra Co Ltd
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Filing: 1984-12-14
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Granted: 1986-04-29
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Expires: 2004-12-14
Abstract
Abstract A dielectric ceramic composition, which has a high dielectric constant, low loss and stable temperature characteristics suited for the microwave frequency range, is obtained by the present invention. The dielectric ceramic composition according to the present invention is expressed as (Ba x Sr 1-x )(Ni 1/3 Nb 2/3 )O 3 and with a mole fraction range of 0≦x<1.
Inventors
- 👤 Tutomu Tunooka
- 👤 Fumio Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:14
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A dielectric ceramic composition for high frequency purposes wherein said dielectric ceramic composition for high frequency purposes is expressed by a formula (Ba x Sr 1-x ) (Ni 1/3 Nb 2/3 )O 3 and with a mole fraction range of 0≦x<1.
Claim 2
Dependent Claim
41 words
A dielectric ceramic composition for high frequency purposes wherein said dielectric ceramic composition for high frequency purposes is expressed by a formula (Ba x Sr 1-x ) (Ni 1/3 Nb 2/3 )O 3 and with a mole fraction range of 0≦x<1.
References Cited (Backward Citations)
US2961327A
Cited
JPS5360541A
Cited
US4319485A
Cited
JPS5860661A
Cited
JPS5860660A
Cited
JPS59147474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |