US3868334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistive glaze and paste compositions
Assignee: Airco Inc
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Filing: 1972-04-21
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Granted: 1975-02-25
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Expires: 1992-04-21
Abstract
Abstract Resistive glazes and paste compositions for firing into such glazes, including a ruthenium dioxide-based conductant and a glass including specified proportions of selected oxides of lead, zinc, manganese, boron, silicon, and zirconium. Additional quantities of antimony and vanadium pentoxides may be added as TCR modifiers, as may ceric oxide, which serves as a viscosity control agent during firing. A temporary liquid binder is present in the paste composition to bind the composition prior to firing to a glaze.
Inventors
- 👤 Loan Paul R Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:27
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; H01C17/0654; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C3/0745; C03C8/00; C03C8/02; C03C8/10; C03C8/14; H01B; H01B1/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
60 words
A COMPOSITION FOR FIRING INTO A RESISTIVE GLAZE, COMPRISING IN ADMIXTURE: AS A CONDUCTANT, FINELY DIVIDED RUO2; A GLASS FRIT CONSISTING BY WEIGHT OF 55 TO 75% PBO, E TO 10% ZNO, 2 TO 10% MNO, 5 TO 20% SIO2, 5 TO 20% B2O3, AND 0 TO 5% ZRO2; AND A TEMPORARY LIQUID BINDER FOR SAID CONDUCTANT AND FRIT COMPONENTS.
Claim 2
Dependent Claim
60 words
A COMPOSITION FOR FIRING INTO A RESISTIVE GLAZE, COMPRISING IN ADMIXTURE: AS A CONDUCTANT, FINELY DIVIDED RUO2; A GLASS FRIT CONSISTING BY WEIGHT OF 55 TO 75% PBO, E TO 10% ZNO, 2 TO 10% MNO, 5 TO 20% SIO2, 5 TO 20% B2O3, AND 0 TO 5% ZRO2; AND A TEMPORARY LIQUID BINDER FOR SAID CONDUCTANT AND FRIT COMPONENTS.
Claim 3
Dependent Claim
39 words
A composition according to claim 1, wherein the components of said glass frit are present in the approximate proportions by weight of PbO 65%, ZnO 5.5%, MnO 2.5%, B2O3 12 to 16%, SiO2 9 to 13%, and ZrO2 2%.
Claim 4
Dependent Claim
56 words
A composition according to claim 1, further including as a TCR modifier, less than 4 percent by weight of an additive selected from the group consisting of V2O5, Sb2O5, and mixtures thereof, said additive being present in an amount sufficient to lower the TCR in the fired resistive glaze below that found in the absence thereof.
Claim 5
Dependent Claim
31 words
A composition according to claim 1, further including as a viscosity control agent during firing, less than 20% by weight of the solid constituents of said composition, of finely divided CeO2.
Claim 6
Dependent Claim
25 words
A composition according to claim 3, wherein said RuO2 is present as less than 10 percent by weight of the solid components of said composition.
Claim 7
Dependent Claim
32 words
A composition according to claim 5, further including as a viscosity control agent during firing, less than 20 percent by weight of the solid constituents of said composition, of finely divided CeO2.
Claim 8
Dependent Claim
64 words
A fired, electrically resistive glaze composition, comprising: finely divided particles of a conductant selected from the group consisting of RuO2, a metal ruthenate and mixtures thereof, unifOrmly dispersed in a fused glass matrix, said matrix consisting by weight of 55 to 75% PbO, 2 to 10% ZnO, 2 to 10% MnO, 5 to 20% SiO2, 5 to 20% B2O3, and 0 to 5% ZrO2.
Claim 9
Dependent Claim
64 words
A fired, electrically resistive glaze composition, comprising: finely divided particles of a conductant selected from the group consisting of RuO2, a metal ruthenate and mixtures thereof, unifOrmly dispersed in a fused glass matrix, said matrix consisting by weight of 55 to 75% PbO, 2 to 10% ZnO, 2 to 10% MnO, 5 to 20% SiO2, 5 to 20% B2O3, and 0 to 5% ZrO2.
Claim 10
Dependent Claim
39 words
A product according to claim 7, wherein the components of said glass matrix are present in the approximate proportions by weight of PbO 65%, ZnO 5.5%, MnO 2.5%, B2O3 12 to 16%, SiO2 9 to 13%, and ZrO2 2%.
Claim 11
Dependent Claim
56 words
A product according to claim 7, further including as a TCR modifier, less than 4 percent by weight of an additive selected from the group consisting of the V2O5, Sb2O5 and mixtures thereof, said additive being present in amounts sufficient to lower the TCR in the fired resistive glaze below that found in the absence thereof.
Claim 12
Dependent Claim
15 words
A product according to claim 7, further including less than 20% by weight of CeO2.
Claim 13
Dependent Claim
20 words
A product according to claim 9, wherein said conductant is present as less than 10% by weight of said composition.
Claim 14
Dependent Claim
15 words
A product according to claim 11, further including less than 20% by weight of CeO2.
Claim 15
Dependent Claim
72 words
A composition for firing into a resistive glaze, comprising in admixture; a finely divided conductant selected from the group consisting of a metal ruthenate, RuO2and mixtures of the two; a glass frit consisting by weight of 55 to 75% PbO, 2 to 10% ZnO, 2 to 10% MnO, 5 to 20% SiO2, 5 to 20% B2O3, and 0 to 5% ZrO2; and a temporary liquid binder for said conductant and frit components.
Claim 16
Dependent Claim
72 words
A composition for firing into a resistive glaze, comprising in admixture; a finely divided conductant selected from the group consisting of a metal ruthenate, RuO2and mixtures of the two; a glass frit consisting by weight of 55 to 75% PbO, 2 to 10% ZnO, 2 to 10% MnO, 5 to 20% SiO2, 5 to 20% B2O3, and 0 to 5% ZrO2; and a temporary liquid binder for said conductant and frit components.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |