US6297722B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface mountable electrical device
Assignee: Fuzetec Technology Co Ltd
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Filing: 2000-09-15
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Granted: 2001-10-02
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Expires: 2020-09-15
Abstract
Abstract A process for manufacturing surface mountable electrical devices includes the steps of preparing a PTC resistive plate, covering the plate with first and second conductive layers to form a laminate, forming a plurality of spaced apart bores of cross-shaped cross-section in the laminate along intersecting cutting lines at locations where the cutting lines intersect, electroplating the first and second conductive layers and the cross-shaped bores, and cutting the laminate along the cutting lines to form a plurality of polygonal elements with each of the bores being divided into four parts, each having a substantially L-shaped cross-section.
Inventors
- 👤 Ching-Chiang Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:22
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/1406; H01C7/00; H01C7/02; H01C7/021; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3431; H05K3/3442; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
105 words
A process for manufacturing surface mountable electrical devices, comprising the steps of: preparing a PTC resistive plate having opposite first and second surfaces; respectively covering said first and second surfaces with first and second conductive layers to form a laminate; forming a plurality of spaced apart bores of cross-shaped cross-section in said laminate along intersecting cutting lines at locations where said cutting lines intersect; electroplating said first and second conductive layers and said cross-shaped bores; and cutting said laminate along said cutting lines to form a plurality of polygonal elements with each of said bores being divided into four parts, each having a L-shaped cross-section.
Claim 2
Dependent Claim
105 words
A process for manufacturing surface mountable electrical devices, comprising the steps of: preparing a PTC resistive plate having opposite first and second surfaces; respectively covering said first and second surfaces with first and second conductive layers to form a laminate; forming a plurality of spaced apart bores of cross-shaped cross-section in said laminate along intersecting cutting lines at locations where said cutting lines intersect; electroplating said first and second conductive layers and said cross-shaped bores; and cutting said laminate along said cutting lines to form a plurality of polygonal elements with each of said bores being divided into four parts, each having a L-shaped cross-section.
Claim 3
Dependent Claim
18 words
The process of claim 1 , wherein each of said bores is formed in said laminate by punching.
Claim 4
Dependent Claim
38 words
The process of claim 1 , wherein each of said bores is formed in said laminate by successively forming a plurality of through-holes one after the other in two directions along said cutting lines in an overlapping manner.
Claim 5
Dependent Claim
54 words
The process of claim 1 , further comprising the step of dividing at least one of said first and second conductive layers by etching so that at least one of said first and second metal layers, covering each of said polygonal elements formed after cutting, is divided into two segments by a separation line.
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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) | 2004-10-01 | 2005-04-02 | 2005-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-01 | 2009-04-02 | 2009-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-01 | 2013-04-02 | 2013-10-02 | $7700.00 | Window Closed / Lapsed |