US4476518A
Expired / Lapsed
US
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Thick film electronic circuit
Assignee: Alps Alpine Co Ltd
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Filing: 1982-04-26
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Granted: 1984-10-09
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Expires: 2002-04-26
Abstract
Abstract In a thick film electronic circuit, a plurality of thick film capacitors are deposited on the surface of an insulating substrate. Each capacitor comprises a lower electrode and an upper electrode, which are essentially discrete for each capacitor, while a dielectric layer is deposited unitarily over each lower electrode and under each upper electrode of the capacitors.
Inventors
- 👤 Michiyoshi Tsukahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/12; H01G4/00; H01G4/38; H01G4/385; H05; H05K; H05K1/00; H05K1/16; H05K1/162; H05K1/02; H05K1/03; H05K1/0306; H05K1/09; H05K1/092; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09672; H05K3/00; H05K3/46; H05K3/4644; H05K3/4664; H05K3/4667
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
In a thick film electronic circuit including a plurality of capacitors, each capacitor comprising: a lower electrode formed by a conductive material deposited on a surface of an insulating substrate by thick film techniques; a dielectric layer formed by a dielectric material deposited on said lower electrode by thick film techniques; an upper electrode formed by a conductive material deposited on said dielectric layer by thick film techniques; and a protective layer coated over said upper electrode layer, the improvement wherein the dielectric layers of each of said capacitors are formed unitarily.
Claim 2
Dependent Claim
92 words
In a thick film electronic circuit including a plurality of capacitors, each capacitor comprising: a lower electrode formed by a conductive material deposited on a surface of an insulating substrate by thick film techniques; a dielectric layer formed by a dielectric material deposited on said lower electrode by thick film techniques; an upper electrode formed by a conductive material deposited on said dielectric layer by thick film techniques; and a protective layer coated over said upper electrode layer, the improvement wherein the dielectric layers of each of said capacitors are formed unitarily.
Claim 3
Dependent Claim
26 words
A circuit according to claim 1, wherein said lower electrode, said dielectric layer, said upper electrode and said protective layer are formed by printed circuit techniques.
Claim 4
Dependent Claim
16 words
A circuit according to claim 1, wherein said protective layer is formed of a glass material.
Claim 5
Dependent Claim
17 words
A circuit according to claim 1, wherein said each dielectric layer is formed of the same material.
Claim 6
Dependent Claim
26 words
A circuit according to claim 1, wherein at least one of said dielectric layers is formed of a material different from those of other dielectric layers.
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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |