Patent US3846345A successfully refreshed from Google Patents.
US3846345A
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Electroconductive paste composition and structures formed therefrom
Assignee: OI Glass Inc
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Filing: 1972-07-31
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Granted: 1974-11-05
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Expires: 1992-07-31
Abstract
Abstract A resistor and conductor paste compositions and structures formed therefrom for hybrid integrated circuits are disclosed in which a metal which substantially contributes the electrical conductivity is coated over micron-sized glass particles the metal coated particles are then mixed and fused into a glass matrix the whole adhering to a ceramic substrate. This structure results in greater conductivity for a given quantity of the metal. Efficient metals for the purpose are silver and the noble metals and alloys of these relatively expensive materials.
Inventors
- 👤 D Mason
- 👤 H Nester
- 👤 D Nester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:59
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; B; B22; B22F; B22F1/00; B22F1/18; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06526; H10; H10N; H10N97/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/25; Y10T428/252; Y10T428/256
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
AN ELECTROCONDUCTIVE BODY OF MATERIAL HAVING A PLURALITY OF PARTICULATE BODIES OF LESS THAN ABOUT TEN MICRONS IN DIAMETER EMBEDDED WITHIN A FUSED GLASSY MATRIX OF DIELECTRIC MATERIAL IN MUTAL INTERFACIAL CONTACTING RELATIONSHIP AND PROVIDING A CONTINUOUS ELECTROCONDUCTIVE PATH THROUGH SAID FUSED GLASSY MATRIX OF DIELECTRIC MATERIAL, SAID PARTICULATE BODIES INCLUDING A PLURALITY OF PARTICULATE BODIES RESPECTIVELY HAVING A CORE OF DIELECTRIC MATERIAL SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING ESSENTIALLY OF GLASS, ALUMINA, BERYLLIA, AND CERAMIC MATERIAL AND SURROUNDED BY AN ESSENTAILLY CONTINUOUS SKIN OF ELECTROCONDUCTIVE NOBLE METAL MATERIAL SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF PALLADIUM, RHODIUM, AND OXIDES AND ALLOYS OF EITHER THEREOF.
Claim 2
Dependent Claim
111 words
AN ELECTROCONDUCTIVE BODY OF MATERIAL HAVING A PLURALITY OF PARTICULATE BODIES OF LESS THAN ABOUT TEN MICRONS IN DIAMETER EMBEDDED WITHIN A FUSED GLASSY MATRIX OF DIELECTRIC MATERIAL IN MUTAL INTERFACIAL CONTACTING RELATIONSHIP AND PROVIDING A CONTINUOUS ELECTROCONDUCTIVE PATH THROUGH SAID FUSED GLASSY MATRIX OF DIELECTRIC MATERIAL, SAID PARTICULATE BODIES INCLUDING A PLURALITY OF PARTICULATE BODIES RESPECTIVELY HAVING A CORE OF DIELECTRIC MATERIAL SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING ESSENTIALLY OF GLASS, ALUMINA, BERYLLIA, AND CERAMIC MATERIAL AND SURROUNDED BY AN ESSENTAILLY CONTINUOUS SKIN OF ELECTROCONDUCTIVE NOBLE METAL MATERIAL SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF PALLADIUM, RHODIUM, AND OXIDES AND ALLOYS OF EITHER THEREOF.
Claim 3
Dependent Claim
49 words
An electroconductive body as defined in claim 1, including an intermediate layer of electroconductive material selected from at least one of the group consisting essentially of copper and nickle surrounding said core of dielectric material and disposed between said core of dielectric material and said skin of electroconductive material.
Claim 4
Dependent Claim
37 words
An electroconductive body as defined in claim 1, wherein said skin of electroconductive material consists essentially of palladium having alloyed therewith at least one of the noble metals selected from the group consisting of silver and gold.
Claim 5
Dependent Claim
29 words
An electroconductive body as defined in claim 3, wherein said palladium has alloyed therewith about 32 percent by weight of silver and about 5 percent by weight of gold.
Claim 6
Dependent Claim
146 words
A thick film paste composition comprising a first group of particles and a second group of particles intermixed and suspended together in a liquid vehicle to form a smooth paste suitable for application to a substrate by screen stenciling, said first group of particles respectively being spherically shaped bodies of less than ten microns in diameter and having a core of dielectric material selected from at least one of the group consisting essentially of glass, alumina, beryllia and ceramic material and surrounded by an essentially continuous skin of electroconductive material selected from at least one of the group of electroconductive materials consisting of palladium, rhodium, and oxides and alloys of either thereof, and said second group of particles being composed of heat-fusible glassy dielectric material having a fusion temperature lower than the softening temperature of said core of dielectric material of said first group of particles.
Claim 7
Dependent Claim
146 words
A thick film paste composition comprising a first group of particles and a second group of particles intermixed and suspended together in a liquid vehicle to form a smooth paste suitable for application to a substrate by screen stenciling, said first group of particles respectively being spherically shaped bodies of less than ten microns in diameter and having a core of dielectric material selected from at least one of the group consisting essentially of glass, alumina, beryllia and ceramic material and surrounded by an essentially continuous skin of electroconductive material selected from at least one of the group of electroconductive materials consisting of palladium, rhodium, and oxides and alloys of either thereof, and said second group of particles being composed of heat-fusible glassy dielectric material having a fusion temperature lower than the softening temperature of said core of dielectric material of said first group of particles.
Claim 8
Dependent Claim
48 words
A thick film paste composition as defined in claim 5, wherein said first group of particles includes particles having an electroconductive layer of non-noble metal material selected from at least one of the group consisting essentially of copper and nickle disposed intermediate said dielectric core and said skin.
Claim 9
Dependent Claim
38 words
A thick film paste composition as defined in claim 5, wherein said skin of electroconductive material consists essentially of palladium alloyed with at least one of the noble metals selected from the group consisting of silver and gold.
Claim 10
Dependent Claim
31 words
A thick film paste composition as defined in claim 7, wherein said palladium has alloyed therewith about 32 percent by weight of silver and about 5 percent by weight of gold.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |