H - Electricity – 05 – K
Patent
H - Electricity
05
K
356/16
H05K 3/46 (2006.01) H05K 3/40 (2006.01) H05K 3/00 (2006.01)
Patent
CA 1214571
TITLE LIQUID CHEMICAL PROCESS FOR FORMING CONDUCTIVE THROUGH-HOLES THROUGH A DIELECTRIC LAYER ABSTRACT A conductive through-hole hole is formed by liquid chemically etching a hole completely through a dielectric sandwiched between conductors and by deforming at least one conductor which has been undercut during the etching.
469288
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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