US4061584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High dielectric constant ink for thick film capacitors
Assignee: General Electric Co
•
Filing: 1976-01-22
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Granted: 1977-12-06
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Expires: 1996-01-22
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 at least one electropositive element therein which is common with the powdered, high dielectric material which is one selected from the group consisting of chemically pure barium titanate and chemically pure barium titanate modified with from about 0.125% to about 5.0% by weight of a metal oxide additive. The glass bonding agent is an alkali-free binder comprising from 3 percent to 7 percent by total weight of the dielectric and binder materials.
Inventors
- 👤 Roland T. Girard
- 👤 George A. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:41
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: 12
Claim 1
Independent Claim
132 words
An improved dielectric ink for thick film printing consisting of: a powdered, high dielectric constant material which includes a barium titanate material which is one selected from the group consisting of chemically pure barium titanate and chemically pure barium titanate modified with from about 0.125% to about 5.0% by weight of a metal oxide additive; an alkali-free glass binder comprising from 3 percent to 7 percent by total weight of the dielectric and binder materials, the binder having at least the electropositive element barium present therein, the alkali-free glass has the following formulation: ______________________________________
Ingredient % by weight
______________________________________
BaO 38 to 46
ZnO 7 to 11
SiO.sub.2 35 to 45
B.sub.2 O.sub.3 6 to 8
Al.sub.2 O.sub.3 2 to 5
______________________________________ and a liquid vehicle for said dielectric and binder materials.
Claim 2
Dependent Claim
132 words
An improved dielectric ink for thick film printing consisting of: a powdered, high dielectric constant material which includes a barium titanate material which is one selected from the group consisting of chemically pure barium titanate and chemically pure barium titanate modified with from about 0.125% to about 5.0% by weight of a metal oxide additive; an alkali-free glass binder comprising from 3 percent to 7 percent by total weight of the dielectric and binder materials, the binder having at least the electropositive element barium present therein, the alkali-free glass has the following formulation: ______________________________________
Ingredient % by weight
______________________________________
BaO 38 to 46
ZnO 7 to 11
SiO.sub.2 35 to 45
B.sub.2 O.sub.3 6 to 8
Al.sub.2 O.sub.3 2 to 5
______________________________________ and a liquid vehicle for said dielectric and binder materials.
Claim 3
Dependent Claim
20 words
An improved dielectric ink as set forth in claim 1 wherein said powdered, high dielectric constant material comprises barium titanate.
Claim 4
Dependent Claim
30 words
An improved dielectric ink as set forth in claim 1 wherein said dielectric material is modified barium titanate, comprising from 82% to 86% by weight barium titanate, balance barium stannate.
Claim 5
Dependent Claim
39 words
An improved dielectric ink as set forth in claim 1 wherein the alkali-free glass binder has the following formation: ______________________________________
Ingredient % by weight
______________________________________
BaO 42
ZnO 9
SiO.sub.2 40
B.sub.2 O.sub. 3 6
Al.sub.2 O.sub.3 3.
______________________________________
Claim 6
Dependent Claim
46 words
An improved dielectric ink as set forth in claim 1 wherein the dielectric material composition is a modified barium titanate and the metal oxide additive is one selected from the class of materials consisting of lanthanum oxide, cerium compounds, stannates, zirconates, neodymium oxide and bismuth compounds.
Claim 7
Dependent Claim
22 words
An improved dielectric ink as set forth in claim 1 wherein the alkali-free glass binder includes titanium dioxide as an additive material.
Claim 8
Dependent Claim
41 words
An improved dielectric ink as set forth in claim 6 wherein the alkali-free glass binder has the following formulation: ______________________________________
Ingredient % by weight
______________________________________
BaO 38-46
ZnO 7-11
SiO.sub.2 35-45
B.sub.2 O.sub.3 6-8
Al.sub.2 O.sub. 3
2-5
TiO.sub.2 3-10.
______________________________________
Claim 9
Dependent Claim
40 words
The improved dielectric ink as set forth in claim 7 wherein the alkali-free glass binder has the following formulation: ______________________________________
Ingredient % by weight
______________________________________
BaO 42.05
ZnO 9.00
SiO.sub.2 35.59
B.sub.2 O.sub.3 5.96
Al.sub.2 O.sub.3 2.67
TiO.sub.2 4.73.
______________________________________
Claim 10
Dependent Claim
29 words
An improved dielectric ink as set forth in claim 8 wherein the dielectric material comprises from 82% to 86% by weight barium titanate and the remainder is barium stannate.
Claim 11
Dependent Claim
29 words
An improved dielectric ink as set forth in claim 6 wherein the dielectric material comprises from 82% to 86% by weight barium titanate and the remainder is barium stannate.
Claim 12
Dependent Claim
21 words
An improved dielectric ink as set forth in claim 10 wherein said glass binder comprises 3% by weight of said ink.
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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) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |