Patent US4733328A successfully refreshed from Google Patents.
US4733328A
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Process for manufacturing capacitive devices and capacitive devices manufactured by the process
Assignee: Honeywell International Inc
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Filing: 1986-12-18
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Granted: 1988-03-22
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Expires: 2006-12-18
Abstract
Abstract This invention relates to a laminated capacitive element for use in electrical devices such as filtered connectors, said element comprising a laminated body of a metal substrate having one or more layered structures heat bonded to all or a portion of the surfaces thereof, said structures comprising a non-conductive layer composed of a sintered finely divided non-conductive material heat bonded to said metal substrate and a metal conductive layer composed of sintered finely divided metal heat bonded to said sintered non-conductive material.
Inventors
- 👤 Daniel C. Blazej
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:40
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/35; H01G4/002; H01G4/018; H01G4/06; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
85 words
A capacitive element which comprises: a laminated body comprising a metal substrate having one or more layered structures heat bonded to all or a portion of the surfaces thereof, each of said structures comprising a nonconductive layer comprised of sintered finely divided barium titanate and one or more glasses selected from the group consisting of alkali metal borates, silicates and germanates heat bonded to said metal substrate, and a metal conductive layer comprised of a sintered finely divided metal heat bonded to said non-conductive layer.
Claim 2
Dependent Claim
85 words
A capacitive element which comprises: a laminated body comprising a metal substrate having one or more layered structures heat bonded to all or a portion of the surfaces thereof, each of said structures comprising a nonconductive layer comprised of sintered finely divided barium titanate and one or more glasses selected from the group consisting of alkali metal borates, silicates and germanates heat bonded to said metal substrate, and a metal conductive layer comprised of a sintered finely divided metal heat bonded to said non-conductive layer.
Claim 3
Dependent Claim
27 words
A capacitive element according to claim 1 wherein said first metal substrate is composed of copper, iron, platinum, aluminum, silver, gold, nickel, palladium or an alloy thereof.
Claim 4
Dependent Claim
15 words
A capacitive element according to claim 2 wherein said metal substrate is composed of copper.
Claim 5
Dependent Claim
23 words
A capacitive element according to claim 1 wherein the thickness of said metal substrate is from about 0.025 mils to about 0.75 mm.
Claim 6
Dependent Claim
18 words
A capacitive element according to claim 4 wherein said thickness is from about 0.075 to about 0.6 mm.
Claim 7
Dependent Claim
18 words
A capacitive element according to claim 5 wherein said thickness is from about 0.125 to about 0.5 mm.
Claim 8
Dependent Claim
18 words
A capacitive element according to claim 6 wherein said thickness is from about 0.2 to about 0.4 mm.
Claim 9
Dependent Claim
22 words
A capacitive element according to claim 1 wherein the thickness of said non-conductive layer is from about 0.020 to about 0.10 mm.
Claim 10
Dependent Claim
18 words
A capacitive element according to claim 8 wherein said thickness is from about 0.025 to about 0.085 mm.
Claim 11
Dependent Claim
18 words
A capacitive element according to claim 9 wherein said thickness is from about 0.030 to about 0.070 mm.
Claim 12
Dependent Claim
18 words
A capacitive element according to claim 10 wherein said thickness is from about 0.040 to about 0.060 mm.
Claim 13
Dependent Claim
34 words
A capacitive element according to claim 1 wherein said metal conductive layer is composed of a metal selected from the group consisting of copper, nickel, gold, palladium, platinum, iron, aluminum, silver, and alloys thereof.
Claim 14
Dependent Claim
24 words
A capacitive element according to claim 12 wherein said metal is selected from the group consisting of copper, silver, palladium and an alloy thereof.
Claim 15
Dependent Claim
12 words
A capacitive element according to claim 13 wherein said metal is copper.
Claim 16
Dependent Claim
24 words
A capacitive element according to claim 1 wherein the thickness of said second metal conductive layer is from about 0.005 to about 0.075 mm.
Claim 17
Dependent Claim
19 words
A capacitive element according to claim 15 wherein said thickness is from about 0.01 mm to about 0.06 mm.
Claim 18
Dependent Claim
18 words
A capacitive element according to claim 16 wherein said thickness is from about 0.015 to about 0.05 mm.
Claim 19
Dependent Claim
18 words
A capacitive element according to claim 17 wherein said thickness is from about 0.02 to about 0.03 mm.
Claim 20
Dependent Claim
30 words
A capacitive element according to claim 1 wherein the thickness of said metal substrate is greater than the thickness of each of said non-conductive layer and said metal conductive layer.
Claim 21
Dependent Claim
27 words
A capacitive element according to claim 19 wherein the thickness of said metal substrate is at least two times the thickness of each of said non-conductive layer.
Claim 22
Dependent Claim
33 words
A capacitive element according to claim 1 wherein said non-conductive layer consists essentially of barium titanate and one or more glasses selected from the group consisting of alkali metal borates, silicates and germanates.
Claim 23
Dependent Claim
32 words
A capacitive element according to claim 1 wherein said conductive layer consists of barium titanate and one or more glasses selected from the group consisting of alkali metal borates, silicates and germanates.
Claim 24
Dependent Claim
15 words
A capacitive device according to claim 1 wherein said alkali metal is lithium or potassium.
Claim 25
Dependent Claim
13 words
A capacitive element according to claim 23 wherein said alkali metal is lithium.
Claim 26
Dependent Claim
22 words
A capacitive element according to claim 24 wherein said glasses are selected from the group consisting of alkali metal borates and germanates.
Claim 27
Dependent Claim
20 words
A capacitive element according to claim 25 wherein said glasses are selected from the group consisting of alkali metal borates.
Claim 28
Dependent Claim
21 words
A capacitive element according to claim 26 wherein said alkali metal is selected from the group consisting of lithium and potassium.
Claim 29
Dependent Claim
12 words
A capacitive element according to claim 27 wherein alkali metal is lithium.
Claim 30
Dependent Claim
38 words
A capacitive element according to claim 1 wherein said glasses are selected from the group consisting of LiBO 2 , Li 2 B 8 O 13 and Li 2 O.sub.(0.16) B 2 O 3 (0.74) SiO 2 (0.10).
Claim 31
Dependent Claim
27 words
A capacitive element according to claim 29 wherein said glasses are selected from the group consisting of LiBO 2 and Li 2 B 8 O 13 .
Claim 32
Dependent Claim
22 words
A capacitive element according to claim 30 wherein said non-conductive layer comprises LiB 8 O 13 as the alkali metal borate glass.
Claim 33
Dependent Claim
12 words
A capacitive element according to claim 29 wherein said substrate is copper.
Claim 34
Dependent Claim
41 words
A capacitive element according to claim 1 wherein the amount of said glasses contained in said layer is equal to or less than about 5 vol % based on the total volume of the glasses and barium titanate in said layer.
Claim 35
Dependent Claim
20 words
A capacitive element according to claim 33 wherein said amount is equal to or less than about 2.5 vol %.
References Cited (Backward Citations)
US3273033A
Cited
US3483447A
Cited
US3267342A
Cited
US3619744A
Cited
US3784887A
Cited
US3878443A
Cited
US3902102A
Cited
US4631633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |