Patent US4714645A successfully refreshed from Google Patents.
US4714645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic parts and process for the manufacture of the same
Assignee: SB Kawasumi Laboratories Inc
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Filing: 1986-07-07
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Granted: 1987-12-22
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Expires: 2006-07-07
Abstract
Abstract Electronic parts comprising ceramic substrate and electrode layer provided onto the substrate in which a micro-granular ceramic powder is dispersed substantially only inside of the electrode layer. A process for the manufacture of the same is also disclosed.
Inventors
- 👤 Shinroku Kawasumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:36
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/009; C04B41/45; C04B41/50; C04B41/51; H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; C04B2111/00; C04B2111/00474; C04B2111/00844; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24413; Y10T428/24802; Y10T428/24917; Y10T428/24926; Y10T428/25; Y10T428/252; Y10T428/256; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
118 words
An electronic component comprising a ceramic substrate having at least a portion of said substrate coated with a fired electroconductive precious metal-containing electrode layer, said electrode layer having a surface thereof which consists essentially of said electroconductive precious metal, said electrode layer further comprising a plurality of micro-granular ceramic particles having an average diameter of not greater than 1 micron which particles have been coated with said electro-conductive precious metal and fired, said particles being in metal-to-metal contact whereby the surface portions of the outer surface layer of said fired particles form said surface of said electrode layer, said ceramic particle portion of said electrode layer consisting of from 90 to 10% by weight of said electrode layer.
Claim 2
Dependent Claim
118 words
An electronic component comprising a ceramic substrate having at least a portion of said substrate coated with a fired electroconductive precious metal-containing electrode layer, said electrode layer having a surface thereof which consists essentially of said electroconductive precious metal, said electrode layer further comprising a plurality of micro-granular ceramic particles having an average diameter of not greater than 1 micron which particles have been coated with said electro-conductive precious metal and fired, said particles being in metal-to-metal contact whereby the surface portions of the outer surface layer of said fired particles form said surface of said electrode layer, said ceramic particle portion of said electrode layer consisting of from 90 to 10% by weight of said electrode layer.
Claim 3
Dependent Claim
26 words
The electronic component of claim 1 wherein said ceramic particle portion of said electrode layer comprises from 75 to 25% by weight of said electrode layer.
Claim 4
Dependent Claim
15 words
The electronic component of claim 1 wherein said micro-granular ceramic particles are metal oxide particles.
Claim 5
Dependent Claim
15 words
The electronic component of claim 1 wherein said micro-granular ceramic particles are titanium dioxide particles.
Claim 6
Dependent Claim
15 words
The electronic component of claim 1 wherein said micro-granular ceramic particles are barium titanate particles.
Claim 7
Dependent Claim
12 words
The electronic component of claim 1 wherein said precious metal is silver.
Claim 8
Dependent Claim
12 words
The electronic component of claim 1 wherein said precious metal is palladium.
Claim 9
Dependent Claim
12 words
The electronic component of claim 1 wherein said precious metal is gold.
Claim 10
Dependent Claim
178 words
An electronic component comprising a ceramic substrate having at least a portion of said substrate coated with a fired electroconductive air-stable metal-containing electarode layer, said electrode layer having a surface thereof which consist essentially of said electroconductive air-stable metal selected from the group consisting of platinum, gold, silver palladium, molybdenum, nickel, cobalt, iron, copper, zinc, tin, antimony, tungsten, manganese, tatanium, vanadium and chromium and an alloy thereof; said electrode layer further comprising a plurality of micro-granular ceramic particles having an average diameter of not greater than 1 micron which particles have been coated with said electro-conductive precious metal and fired, said particles being in metal-to-metal contact whereby the surface portions of the outer surface layer of said fired particles from said surface of said electrode layer, said ceramic particle portion of said electrode layer consisting of from 90 to 10% by weight of said electrode layer and comprises a ceramic material selected from the group consisting of silicon dioxide, zirconium oxide, aluminum oxide, titanium dioxide, ferric oxide, calcium oxide, barium titanate, tungsten carbide, silicon carbide and titanium nitride.
Claim 11
Dependent Claim
178 words
An electronic component comprising a ceramic substrate having at least a portion of said substrate coated with a fired electroconductive air-stable metal-containing electarode layer, said electrode layer having a surface thereof which consist essentially of said electroconductive air-stable metal selected from the group consisting of platinum, gold, silver palladium, molybdenum, nickel, cobalt, iron, copper, zinc, tin, antimony, tungsten, manganese, tatanium, vanadium and chromium and an alloy thereof; said electrode layer further comprising a plurality of micro-granular ceramic particles having an average diameter of not greater than 1 micron which particles have been coated with said electro-conductive precious metal and fired, said particles being in metal-to-metal contact whereby the surface portions of the outer surface layer of said fired particles from said surface of said electrode layer, said ceramic particle portion of said electrode layer consisting of from 90 to 10% by weight of said electrode layer and comprises a ceramic material selected from the group consisting of silicon dioxide, zirconium oxide, aluminum oxide, titanium dioxide, ferric oxide, calcium oxide, barium titanate, tungsten carbide, silicon carbide and titanium nitride.
Claim 12
Dependent Claim
26 words
The electronic component of claim 9 wherein said ceramic particle portion of said electrode layer comprises from 75 to 25% by weight of said electrode layer.
Claim 13
Dependent Claim
13 words
The electronic component of claim 9 wherein said ceramic material is an oxide.
Claim 14
Dependent Claim
13 words
The electronic component of claim 11 wherein said ceramic material is titanium dioxide.
Claim 15
Dependent Claim
13 words
The electronic component of claim 11 wherein said ceramic material is barium titanate.
Claim 16
Dependent Claim
13 words
The electronic component of claim 12 wherein the metal is silver or palladium.
Claim 17
Dependent Claim
13 words
The electronic component of claim 13 wherein the metal is silver of palladium.
Claim 18
Dependent Claim
14 words
The electronic component of claim 11 wherein the metal is copper or copper alloy.
Claim 19
Dependent Claim
11 words
The electronic component of claim 11 wherein the metal is 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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |