Patent US4030004A successfully refreshed from Google Patents.
US4030004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric ceramic matrices with end barriers
Assignee: NL Industries Inc
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Filing: 1975-03-24
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Granted: 1977-06-14
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Expires: 1995-03-24
Abstract
Abstract Multilayer capacitors, and/or circuit structures are formed from monolithic, sintered, ceramic matrices that have a plurality of dielectric or insulating ceramic strata or layers with intervening open-structured areas therebetween, by injecting into said areas molten metal to form internal electrodes or conductors, a penetrable barrier being provided if desired over the entrances to said areas before such injection.
Inventors
- 👤 Truman C. Rutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:14
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/30; H01G4/302; H05; H05K; H05K3/00; H05K3/10; H05K3/101; H05K3/46; H05K3/4611; H05K3/4626; H05K3/4629; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24777
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A sintered, unitary ceramic body comprising: a plurality of strata of a dense dielectric or insulating ceramic composition, said strata alternating with open-structured areas substantially parallel with said strata and extending to edges of said body, each of said open-structured areas containing at least some solid material and alternate ones of said open-structured areas extending to different edge regions of said body; and a penetrable barrier over each of said edge regions, said barriers permitting molten metal to be forced by pressure into said areas.
Claim 2
Dependent Claim
85 words
A sintered, unitary ceramic body comprising: a plurality of strata of a dense dielectric or insulating ceramic composition, said strata alternating with open-structured areas substantially parallel with said strata and extending to edges of said body, each of said open-structured areas containing at least some solid material and alternate ones of said open-structured areas extending to different edge regions of said body; and a penetrable barrier over each of said edge regions, said barriers permitting molten metal to be forced by pressure into said areas.
Claim 3
Dependent Claim
27 words
A body as set forth in claim 1 in which said areas are in the form of strata of ceramic material having a network of interconnected pores.
Claim 4
Dependent Claim
17 words
A body as set forth in claim 1 in which said penetrable barriers are end termination electrodes.
Claim 5
Dependent Claim
18 words
A body as set forth in claim 1 in which said penetrable barriers are end termination electrodes. pg,34
Claim 6
Dependent Claim
74 words
A sintered, unitary ceramic body comprising: a plurality of strata of a dense dielectric or insulating ceramic composition, said strata alternating with open-structured areas substantially parallel with said strata and extending to edges of said body, alternate ones of said open-structured areas extending to different edge regions of said body; and a penetrable ceramic barrier over each of said edge regions, said barriers permitting molten metal to be forced by pressure into said areas.
Claim 7
Dependent Claim
74 words
A sintered, unitary ceramic body comprising: a plurality of strata of a dense dielectric or insulating ceramic composition, said strata alternating with open-structured areas substantially parallel with said strata and extending to edges of said body, alternate ones of said open-structured areas extending to different edge regions of said body; and a penetrable ceramic barrier over each of said edge regions, said barriers permitting molten metal to be forced by pressure into said areas.
Claim 8
Dependent Claim
27 words
A body as set forth in claim 5 in which said areas are in the form of strata of ceramic material having a network of interconnected pores.
Claim 9
Dependent Claim
17 words
A body as set forth in claim 5 in which said areas are substantially void and planar.
Claim 10
Dependent Claim
42 words
A body as set forth in claim 5 in which adjacent ones of said strata have at least one distinct inorganic pillar between them and wherein, when there are a plurality of pillars, substantially all of said pillars are distinct and separated.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |