US6013358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transient voltage protection device with ceramic substrate
Assignee: Cooper Technologies Co
•
Filing: 1997-11-18
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Granted: 2000-01-11
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Expires: 2017-11-18
Abstract
Abstract A transient voltage protection device is described wherein a gap between a ground conductor and another conductor is formed using a diamond dicing saw. Substrate material selection includes specific ceramic materials having a density of less than 3.8 gm/cm 3 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 10:38
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: 8
Claim 1
Independent Claim
75 words
A device comprising: 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 said 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.
Claim 2
Independent Claim
75 words
A device comprising: 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 said 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.
Claim 3
Dependent Claim
19 words
The device of claim 1, wherein said first layer has a density of less than 3.5 gms/cm 3 .
Claim 4
Dependent Claim
19 words
The device of claim 1, wherein said first layer has a density of less than 3.0 gms/cm 3 .
Claim 5
Dependent Claim
13 words
The device of claim 1, wherein said first layer is formed from forsterite.
Claim 6
Dependent Claim
14 words
The device of claim 1, wherein said first layer is formed from calcium borosilicate.
Claim 7
Dependent Claim
31 words
The device of claim 1, further comprising: a second layer formed on top of said ground conductor and at least one other conductor to prevent burring during formation of said gap.
Claim 8
Dependent Claim
13 words
The device of claim 1, wherein said second layer is formed from glass.
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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) | 2003-01-10 | 2003-07-12 | 2004-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-10 | 2007-07-12 | 2008-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-10 | 2011-07-12 | 2012-01-11 | $7700.00 | Window Closed / Lapsed |