US4447853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic capacitor
Assignee: Mitsubishi Mining and Cement Co Ltd
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Filing: 1983-08-01
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Granted: 1984-05-08
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Expires: 2003-08-01
Abstract
Abstract There is disclosed a ceramic capacitor comprising a polycrystalline ceramic dielectric material disposed between electrodes of conductive material with the polycrystalline ceramic dielectric material having a thickness not more than 30 mu m and a particle size not more than one fifth of the thickness of the dielectric material.
Inventors
- 👤 Noboru Tomuro
- 👤 Isao Ishiguchi
- 👤 Shinjiro Tsujikawa
- 👤 Masao Kashima
- 👤 Yasuo Miyashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:28
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A ceramic capacitor comprising a polycrystalline ceramic dielectric material and a plurality of electrodes of conductive material, characterized in that said ceramic dielectric material is disposed between at least one pair of opposing electrodes and has a thickness not more than 30 μm and a particle size not more than one fifth of the thickness of said dielectric material.
Claim 2
Dependent Claim
59 words
A ceramic capacitor comprising a polycrystalline ceramic dielectric material and a plurality of electrodes of conductive material, characterized in that said ceramic dielectric material is disposed between at least one pair of opposing electrodes and has a thickness not more than 30 μm and a particle size not more than one fifth of the thickness of said dielectric material.
Claim 3
Dependent Claim
22 words
A ceramic capacitor according to claim 1, wherein a plurality of ceramic dielectric materials and the plurality of electrodes are alternately laminated.
Claim 4
Dependent Claim
31 words
A ceramic capacitor according to claim 1, wherein same or different types of ceramic dielectric materials are disposed between at least one pair of electrodes to form at least two capacitors.
References Cited (Backward Citations)
JPS5389962A
Cited
US4312023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |