US4496475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive paste, electroconductive body and fabrication of same
Assignee: Potters Industries LLC
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Filing: 1982-09-01
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Granted: 1985-01-29
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Expires: 2002-09-01
Abstract
Abstract A conductive paste and an electroconductive body fabricated from the paste, in which the paste comprises inorganic non-metallic particles coated with silver, silver particles and an organic binder, or inorganic non-metallic particles coated with silver, silver particles, particles of glassy material and an organic vehicle. An electroconductive body comprises silver particles, and inorganic non-metallic particles coated with silver, both embedded in a matrix of organic material or of glassy material. The silver particles and silver-coated inorganic non-metallic particles are in effective contacting relationship within the matrix. Also disclosed are a silver-coated glass bead, for incorporation in paste and an electroconductive body, and methods for fabricating an electroconductive body. The electroconductive bodies are useful, for example, as termination elements for capacitors, and as internal conductive elements in capacitors of the type used in thick-film technology applications.
Inventors
- 👤 John C. Abrams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/0085; H01B; H01B1/00; H01B1/14; H01B1/16; H01B1/20; H01B1/22; H10; H10W; H10W72/00; H10W72/30; H10W72/321; H10W72/325; H10W72/351; H10W72/352; H10W72/353; H10W72/354; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
113 words
A conductive paste suitable for forming an electroconductive body, which comprises inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of glassy material, said particles of glassy material having a fusion silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 2
Dependent Claim
113 words
A conductive paste suitable for forming an electroconductive body, which comprises inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of glassy material, said particles of glassy material having a fusion silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 3
Dependent Claim
120 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 4
Dependent Claim
120 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 5
Dependent Claim
119 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated beads being of a size, on average, of from 1 to 50 microns in diameter, silver particles and particles of a heat-fusible glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 6
Dependent Claim
119 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated beads being of a size, on average, of from 1 to 50 microns in diameter, silver particles and particles of a heat-fusible glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste.
Claim 7
Dependent Claim
29 words
A conductive paste as defined in claim 3, wherein the silver coating of said silver-coated glass beads constitutes of from 4 to 16% by weight of the silver-coated beads.
Claim 8
Dependent Claim
27 words
A conductive paste as defined in claim 3, wherein the organic vehicle contains ethyl cellulose, polyvinyl alcohol, a polymethacrylate of a lower alcohol, or a mixture thereof.
Claim 9
Dependent Claim
97 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, silver particles and particles of a heat-fusible glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the amount of silver in said silver particles constituting at least 25% by weight of the paste.
Claim 10
Dependent Claim
97 words
A conductive paste suitable for forming an electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, silver particles and particles of a heat-fusible glassy material having a fusion temperature lower than the deformation temperature of the silver-coated glass beads, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the amount of silver in said silver particles constituting at least 25% by weight of the paste.
Claim 11
Dependent Claim
161 words
A conductive paste suitable for application to a substrate to form an electroconductive body thereon, which comprises inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of a heat-fusible glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated inorganic non-metallic particles, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste and said total amount of silver being sufficient to prevent appreciable impairment of conductivity, or of adhesion to the substrate, of said electroconductive body upon contact of the body with solder.
Claim 12
Dependent Claim
161 words
A conductive paste suitable for application to a substrate to form an electroconductive body thereon, which comprises inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, silver particles and particles of a heat-fusible glassy material, said particles of glassy material having a fusion temperature lower than the deformation temperature of the silver-coated inorganic non-metallic particles, in an inert organic vehicle which is substantially eliminated from the remaining components of the conductive paste during formation of the electroconductive body, the total amount of silver in said paste constituting at least 10% by weight of the paste and the amount of silver in said silver particles constituting at least 5% by weight of the paste and said total amount of silver being sufficient to prevent appreciable impairment of conductivity, or of adhesion to the substrate, of said electroconductive body upon contact of the body with solder.
Claim 13
Dependent Claim
95 words
An electroconductive body, which comprises silver particles, and inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, both embedded in a matrix of glassy material, said silver particles and silver-coated inorganic non-metallic particles being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 14
Dependent Claim
95 words
An electroconductive body, which comprises silver particles, and inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, both embedded in a matrix of glassy material, said silver particles and silver-coated inorganic non-metallic particles being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 15
Dependent Claim
91 words
An electroconductive body, which comprises silver particles, and glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, both embedded in a matrix of glassy material, said silver particles and silver-coated glass beads being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 16
Dependent Claim
91 words
An electroconductive body, which comprises silver particles, and glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, both embedded in a matrix of glassy material, said silver particles and silver-coated glass beads being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 17
Dependent Claim
91 words
An electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, and silver particles, both embedded in a matrix of fused glassy material, said silver-coated glass beads and silver particles being in effective contacting relationship within said matrix, the total amount of silver in said electroconductive body being at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 18
Dependent Claim
91 words
An electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, and silver particles, both embedded in a matrix of fused glassy material, said silver-coated glass beads and silver particles being in effective contacting relationship within said matrix, the total amount of silver in said electroconductive body being at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body.
Claim 19
Dependent Claim
14 words
An electroconductive body as defined in claim 10, wherein the silver particles are flakes.
Claim 20
Dependent Claim
29 words
An electroconductive body as defined in claim 10, wherein the silver coating of said silver-coated glass beads constitutes of from 4 to 16% by weight of the silver-coated beads.
Claim 21
Dependent Claim
68 words
An electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, and silver particles, both embedded in a matrix of glassy material, said silver-coated glass beads being in effective contacting relationship within said matrix, the amount of silver in said silver particles constituting at least 25% by weight of the body.
Claim 22
Dependent Claim
68 words
An electroconductive body, which comprises glass beads coated with silver, said silver-coated glass beads being of a size, on average, of from 1 to 50 microns in diameter, and silver particles, both embedded in a matrix of glassy material, said silver-coated glass beads being in effective contacting relationship within said matrix, the amount of silver in said silver particles constituting at least 25% by weight of the body.
Claim 23
Dependent Claim
125 words
An electroconductive body, which comprises silver particles, and inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, both embedded in a matrix of glassy material, said silver particles and silver-coated inorganic non-metallic particles being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body and said total amount of silver being sufficient to prevent appreciable impairment of the body's conductivity, and of its adhesion to a substrate, upon contact of the body with solder.
Claim 24
Dependent Claim
125 words
An electroconductive body, which comprises silver particles, and inorganic non-metallic particles coated with silver, said silver-coated inorganic non-metallic particles being of a size, on average, of from 1 to 100 microns in maximum dimension, both embedded in a matrix of glassy material, said silver particles and silver-coated inorganic non-metallic particles being in effective contacting relationship within said matrix, and the total amount of silver in said electroconductive body constituting at least 10% by weight of the body and the amount of silver in said silver particles constituting at least 5% by weight of the body and said total amount of silver being sufficient to prevent appreciable impairment of the body's conductivity, and of its adhesion to a substrate, upon contact of the body with solder.
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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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |