US3878443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor with glass bonded ceramic dielectric
Assignee: General Electric Co
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Filing: 1973-07-27
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Granted: 1975-04-15
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Expires: 1993-07-27
Abstract
Abstract An improved high dielectric constant ink useful in making thick film capacitors is disclosed in which a dielectric material is combined with a glass bonding agent having an electropositive element common with the dielectric material. In a preferred embodiment, the improved dielectric material comprises a barium titanate dielectric combined with barium zinc glass.
Inventors
- 👤 Roland T Girard
- 👤 George A Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227; H01G4/129
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
70 words
A CAPACITOR COMPRISING: A FIRST ELECTRODE COMPRISING AN ELECTRICALLY CONDUCTIVE METAL; A LAYER OF DIELECTRIC MATERIAL COMPRISING BARIUM TITANATE AND AN ALKALI-FREE GLASS BINDER HAVING AT LEAST THE ELECTROPOSITIVE ELEMENT BARIUM THEREIN WHICH IS A COMMON ELECTROPOSITIVE ELEMENT TO THE ELEMENT PRESENT IN THE DIELECTRIC MATERIAL DISPOSED ON, AND IN AN ELECTRICALLY CONDUCTIVE RELATIONSHIP WITH, THE FIRST ELECTRODE; THE ALKALI-FREE GLASS BINDER COMPRISES THE FOLLOWING FORMULATION: INGREDIENT % BY WEIGHT
Claim 2
Dependent Claim
70 words
A CAPACITOR COMPRISING: A FIRST ELECTRODE COMPRISING AN ELECTRICALLY CONDUCTIVE METAL; A LAYER OF DIELECTRIC MATERIAL COMPRISING BARIUM TITANATE AND AN ALKALI-FREE GLASS BINDER HAVING AT LEAST THE ELECTROPOSITIVE ELEMENT BARIUM THEREIN WHICH IS A COMMON ELECTROPOSITIVE ELEMENT TO THE ELEMENT PRESENT IN THE DIELECTRIC MATERIAL DISPOSED ON, AND IN AN ELECTRICALLY CONDUCTIVE RELATIONSHIP WITH, THE FIRST ELECTRODE; THE ALKALI-FREE GLASS BINDER COMPRISES THE FOLLOWING FORMULATION: INGREDIENT % BY WEIGHT
Claim 3
Dependent Claim
24 words
A capacitor as set forth in claim 1 wherein said glass binder comprises two electropositive elements in common with elements in the dielectric material.
Claim 4
Dependent Claim
14 words
A capacitor as set forth in claim 2 wherein said electrodes comprise palladium silver.
Claim 5
Dependent Claim
17 words
A capacitor as set forth in claim 1 wherein the alkali-free glass binder has the following formulation:
Claim 6
Dependent Claim
19 words
A capacitor as set forth in claim 1 wherein the glass binder includes titanate as a second electro-positive element.
Claim 7
Dependent Claim
24 words
A capacitor as set forth in claim 5 wherein the dielectric material comprises 84% by weight barium titanate and 16% by weight barium stannate.
Claim 8
Dependent Claim
17 words
A capacitor as set forth in claim 2 wherein the alkali-free glass binder has the following formulation:
Claim 9
Dependent Claim
24 words
A capacitor as set forth in claim 7 wherein the dielectric material comprises 84% by weight barium titanate and 16% by weight barium stannate.
Claim 10
Dependent Claim
24 words
A capacitor as set forth in claim 4 wherein the dielectric material comprises 84% by weight barium titanate and 16% by weight barium stannate.
Claim 11
Dependent Claim
14 words
A capacitor as set forth in claim 4 wherein said electrodes comprise palladium silver.
Claim 12
Dependent Claim
14 words
A capacitor as set forth in claim 5 wherein said electrodes comprise palladium silver.
Claim 13
Dependent Claim
14 words
A capacitor as set forth in claim 8 wherein said electrodes comprise palladium silver.
Claim 14
Dependent Claim
15 words
A capacaitor as set forth in claim 1 wherein the barium titanate is chemically pure.
Claim 15
Dependent Claim
39 words
A capacitor as set forth in claim 1 wherein the barium titanate is modified with small amounts of at least one metal oxide additive selected from the group consisting of lanthium oxide, cerium compounds, stannates, zirconates, and bismuth compounds.
Claim 16
Dependent Claim
15 words
A capacitor as set forth in claim 4 wherein the barium tiTanate is chemically pure.
Claim 17
Dependent Claim
39 words
A capacitor as set forth in claim 4 wherein the barium titanate is modified with small amounts of at least one metal oxide additive selected from the group consisting of lanthium oxide, cerium compounds, stannates, zirconates and bismuth compounds.
Claim 18
Dependent Claim
15 words
A capacitor as set forth in claim 7 wherein the barium titanate is chemically pure.
Claim 19
Dependent Claim
39 words
A capacitor as set forth in claim 7 wherein the barium titanate is modified with small amounts of at least one metal oxide additive selected from the group consisting of lanthium oxide, cerium compounds, stannates, zirconates and bismuth compounds.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |