Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-07-04
2006-07-04
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S610100, C029S611000, C029S612000, C029S613000, C029S615000, C029S619000, C029S621000, C205S164000, C205S191000, C205S255000, C257S741000, C257S762000, C338S0220SD, C338S0220SD, C338S312000, C338S313000
Reexamination Certificate
active
07069641
ABSTRACT:
The present invention discloses a method for preparing a conductive polymeric composite material having carbon black utilized to a structure for composite materials of a positive temperature coefficient thermistor. The method first provides a metal laminated material comprising a top metal layer and a bottom metal layer, an insulating layer between the top and the bottom metal layer, and a conducting through hole disposed between the top metal layer and the bottom metal layer. A composite electroplating process is then performed to form an composite electroplating layer on the surface of the top metal layer, wherein the composite electroplating layer is a continuous porous structure with a secondary aggregation of carbon black and electroplated metal. Finally, a thermal-laminating process is performed to laminate a polymeric composite material on the composite electroplating layer to form the composite materials of the positive temperature coefficient thermistor device, wherein the polymeric composite material is conductive crystallized and filled with the carbon black.
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Hwang Ren-Haur
Lin Chen-Ron
Liu Der-Yang
Ladas & Parry LLP
Phan Tim
Protectronics Technology Corporation
Tugbang A. Dexter
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