Patent US6299307B1 successfully refreshed from Google Patents.
US6160695A
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Transient voltage protection device with ceramic substrate
Assignee: Cooper Technologies Co
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Filing: 1999-08-10
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Granted: 2000-12-12
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Expires: 2019-08-10
Abstract
Abstract A method for fabricating transient voltage protection devices is described wherein a gap between a ground conductor and another conductor is formed using a diamond dicing saw. Substrate material selection and includes specific ceramic materials designed to optimize performance and manufacturability. An overlay layer can be provided to minimize burring of the conductors during formation of the gap.
Inventors
- 👤 Joan L. Winnett
- 👤 Stephen J. Whitney
- 👤 Edward G. Glass
- 👤 Vernon Spaunhorst
- 👤 Farid Ghaderi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:18
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/08; H01C; H01C7/00; H01C7/10; H01C7/12; H01T21/00; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146; Y10T29/49155; Y10T29/49156; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926; Y10T428/24942; Y10T428/24992
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
A method for fabricating a transient voltage protection device including a ground conductor and at least one other conductor, comprising the steps of: providing a substrate; forming a conductive layer on the substrate; and dicing the conductive layer on the substrate to create a gap which separates the conductive layer into at least the ground conductor and the at least one other conductor.
Claim 2
Independent Claim
63 words
A method for fabricating a transient voltage protection device including a ground conductor and at least one other conductor, comprising the steps of: providing a substrate; forming a conductive layer on the substrate; and dicing the conductive layer on the substrate to create a gap which separates the conductive layer into at least the ground conductor and the at least one other conductor.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein said step of providing a substrate further comprises the step of: forming the substrate from a ceramic material.
Claim 4
Dependent Claim
24 words
The method of claim 1, wherein said step of providing a substrate further comprises the step of: forming the substrate from a non-ceramic material.
Claim 5
Dependent Claim
29 words
The method of claim 1, wherein the step of dicing further comprises the step of: using a diamond saw having diamond particles of at most 5 microns in size.
Claim 6
Dependent Claim
33 words
The method of claim 1, wherein said step of providing a substrate further comprises the step of: forming said substrate from a material having a density of less than 3.8 gms/cm 3 .
Claim 7
Dependent Claim
33 words
The method of claim 1 wherein said step of providing a substrate further comprises the step of: forming said substrate from a material having a density of less than 3.5 gms/cm 3 .
Claim 8
Dependent Claim
33 words
The method of claim 1 wherein said step of providing a substrate further comprises the step of: forming said substrate from a material having a density of less than 3.0 gms/cm 3 .
Claim 9
Dependent Claim
18 words
The method of claim 1 further comprising the step of filling the gap with a variable impedance material.
Claim 10
Dependent Claim
19 words
The method of claim 8 further comprising the step of forming an encapsulation layer over the variable impedance material.
Claim 11
Dependent Claim
25 words
The method of claim 8 wherein the step of filling the gap comprises using a syringe to force the variable impedance material into the gap.
Claim 12
Dependent Claim
17 words
The method of claim 1 further comprising the step of coating the conductive layer with an overlay.
Claim 13
Dependent Claim
10 words
The method of claim 11 wherein the overlay is ceramic.
Claim 14
Dependent Claim
10 words
The method of claim 11 wherein the overlay is glass.
Claim 15
Dependent Claim
128 words
A transient voltage protective device including a first layer having a density of less than about 3.8 gms/cm 3 and having a gap formed therein, a ground conductor and at least one other conductor formed on the first layer such that they are substantially co-planar and are separated from one another by the gap, and a variable impedance material disposed within the gap and in contact with both the ground conductor and the at least one other conductor, said transient voltage protection device made by the process of: providing a substrate; forming a conductive layer on the substrate; and dicing the conductive layer on the substrate to create the gap which separates the conductive layer into at least the ground conductor and the at least one other conductor.
Claim 16
Dependent Claim
128 words
A transient voltage protective device including a first layer having a density of less than about 3.8 gms/cm 3 and having a gap formed therein, a ground conductor and at least one other conductor formed on the first layer such that they are substantially co-planar and are separated from one another by the gap, and a variable impedance material disposed within the gap and in contact with both the ground conductor and the at least one other conductor, said transient voltage protection device made by the process of: providing a substrate; forming a conductive layer on the substrate; and dicing the conductive layer on the substrate to create the gap which separates the conductive layer into at least the ground conductor and the at least one other conductor.
Claim 17
Dependent Claim
50 words
The transient voltage protection device of claim 14 further including a second layer formed on top of said ground conductor to prevent burring during formation of said gap, said transient voltage protection device made by the process further comprising the step of coating the conductive layer with the second layer.
Claim 18
Dependent Claim
14 words
The transient voltage protection device of claim 15 wherein the second layer is glass.
Claim 19
Dependent Claim
27 words
The transient voltage protection device of claim 14, said transient voltage protection device made by the process further comprising filling the gap with the variable impedance material.
Claim 20
Dependent Claim
36 words
The transient voltage protection device of claim 17 further including an encapsulation layer, said transient voltage protection device made by the process further comprising the step of forming said encapsulation layer over the variable impedance material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |