Patent US4506285A successfully refreshed from Google Patents.
US4506285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substrate made of varistor material having a plurality of electronic components mounted thereon
Assignee: Siemens AG
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Filing: 1983-07-25
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Granted: 1985-03-19
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Expires: 2003-07-25
Abstract
Abstract In a combined circuit having varistors, the varistors are contained in portions of a substrate body which consists of zinc oxide, and which has a high resistance due to doping. A varistor property is produced in the portions of the substrate body allocated to the varistors by means of further doping.
Inventors
- 👤 Richard Einzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:09
CPC Classifications
H; H10; H10D; H10D86/00; H10W; H10W44/00; H10W44/401; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W70/692; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K1/16; H10W72/00; H10W72/50; H10W72/541; H10W72/5449; H10W74/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A combined circuit arrangement, comprising: a plurality of electronic components; a substrate body on which the electronic components are commonly integrated; at least one of said components on the substrate body being electrically conductively connected to at least one further component which is formed in a sub-region of the substrate body; the substrate body comprising zinc oxide ceramic with a dopant rendering the ceramic electrically insulating; the sub-region of the substrate body being designed as ceramic having a decreasing resistance vs. increasing applied voltage varistor property and is provided with two electrodes which are disposed on at least one surface of the sub-region so as to form said one further component; and other regions of the zinc oxide ceramic substrate body being provided substantially electrically insulating and having a high resistance relative to a resistance of the sub-region.
Claim 2
Dependent Claim
138 words
A combined circuit arrangement, comprising: a plurality of electronic components; a substrate body on which the electronic components are commonly integrated; at least one of said components on the substrate body being electrically conductively connected to at least one further component which is formed in a sub-region of the substrate body; the substrate body comprising zinc oxide ceramic with a dopant rendering the ceramic electrically insulating; the sub-region of the substrate body being designed as ceramic having a decreasing resistance vs. increasing applied voltage varistor property and is provided with two electrodes which are disposed on at least one surface of the sub-region so as to form said one further component; and other regions of the zinc oxide ceramic substrate body being provided substantially electrically insulating and having a high resistance relative to a resistance of the sub-region.
Claim 3
Dependent Claim
32 words
A combined circuit arrangement according to claim 1 wherein at least one integrated semiconductor circuit electrically connects to the further component having the varistor property at the sub-region of the substrate body.
Claim 4
Dependent Claim
37 words
A combined circuit arrangement according to claim 1 wherein all remaining regions of the substrate body other than the sub-region are provided substantially electrically insulating and with a high resistance relative to the resistance of the sub-region.
Claim 5
Dependent Claim
34 words
A combined circuit arrangement according to claim 1 wherein one of the electrodes is provided on one surface of the sub-region and the other electrode is provide on an opposite surface of the sub-region.
Claim 6
Dependent Claim
22 words
A combined circuit arrangement according to claim 1 wherein both of the two electrodes are disposed on one surface of the sub-region.
Claim 7
Dependent Claim
31 words
A combined circuit arrangement according to claim 5 wherein the sub-region is doped so that it faces only one surface of the substrate and does not extend to the other surface.
Claim 8
Dependent Claim
107 words
A combined circuit arrangement comprising: a substrate body comprising zinc oxide ceramic having a dopant added thereto which makes the ceramic substantially electrically insulating and with a high resistance; a sub-region of the substrate body being additionally doped so as to have a decreasing resistance vs. increasing applied voltage varistor property with a lower resistance relative to the other high resistance regions of the substrate body, said sub-region being provided with two electrodes disposed on at least one surface thereof so as to form a varistor; and at least one other component not having varistor properties being disposed on the substrate body electrically connected to the varistor.
Claim 9
Dependent Claim
107 words
A combined circuit arrangement comprising: a substrate body comprising zinc oxide ceramic having a dopant added thereto which makes the ceramic substantially electrically insulating and with a high resistance; a sub-region of the substrate body being additionally doped so as to have a decreasing resistance vs. increasing applied voltage varistor property with a lower resistance relative to the other high resistance regions of the substrate body, said sub-region being provided with two electrodes disposed on at least one surface thereof so as to form a varistor; and at least one other component not having varistor properties being disposed on the substrate body electrically connected to the varistor.
References Cited (Backward Citations)
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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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |