Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2007-05-08
2007-05-08
Lam, Cathy F. (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C252S513000, C252S514000, C252S519540, C174S257000, C174S264000, C427S097100, C427S372200, C148S023000, C148S024000
Reexamination Certificate
active
10516236
ABSTRACT:
A conductive paste is provided, which has good conductivity and good adhesiveness to substrates and has good long-lasting stability of these properties, and which, when applied to a through-hole of a multi-layered substrate, ensures improved reliability of bonding to the end faces of conductive layers in the through-hole. Therefore, the paste does not require through-hole plating. The conductive paste comprises (A) 100 parts by weight of a resin component that contains an acrylate resin and an epoxy resin, (B) from 200 to 1800 parts by weight of a metal powder of at least two metals that contain at least one low-melting-point metal having a melting point of not higher than 180° C. and at least one high-melting-point metal having a melting point of not lower than 800° C., (C) from 0.5 to 40 parts by weight of a curing agent that contains from 0.3 to 35 parts by weight of a phenol-type curing agent, and (D) from 0.3 to 80 parts by weight of a flux.
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Iwai Kiyoshi
Murakami Hisatoshi
Umeda Hiroaki
Lam Cathy F.
Tatsuta Electric Wire & Cable Co., Ltd.
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