US4558020A
Expired / Lapsed
US
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Ceramic high dielectric composition
Assignee: Panasonic Holdings Corp
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Filing: 1982-07-02
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Granted: 1985-12-10
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Expires: 2002-07-02
Abstract
Abstract PCT No. PCT/JP82/00252 Sec. 371 Date Mar. 7, 1983 Sec. 102(e) Date Mar. 7, 1983 PCT Filed Jul. 2, 1982 PCT Pub. No. WO83/00145 PCT Pub. Date Jan. 20, 1983.This invention relates to ceramic high dielectric composition with BaTiO3 as major component; and by containing 1-5 weight part of CaTiO3, 2-3 weight parts of Nb2O5 to 100 weight parts of the BaTiO3, a composition having dielectric constant of 3000 or above, less voltage dependency, a large bending strength and good high frequency characteristic is provided; and it has a good characteristic when used as thin film type dielectric body like multilayered ceramic capacitor.
Inventors
- 👤 Gen Itakura
- 👤 Hideki Kuramitsu
- 👤 Takashi Iguchi
- 👤 Takayuki Kuroda
- 👤 Kaneomi Nagase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:10
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227; 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
42 words
A ceramic high dielectric composition which consists of 1 to 5 parts by weight of CaTiO 3 and from 2 to 3 parts by weight of Nb 2 O 5 per 100 parts by weight of BaTiO 3 as the host material.
Claim 2
Dependent Claim
42 words
A ceramic high dielectric composition which consists of 1 to 5 parts by weight of CaTiO 3 and from 2 to 3 parts by weight of Nb 2 O 5 per 100 parts by weight of BaTiO 3 as the host material.
References Cited (Backward Citations)
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US4073989A
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DE2054653A1
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JPS5035222A
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US4014707A
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US4222783A
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JPS5553006A
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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) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |