Electric heating – Metal heating – By arc
Patent
1996-11-08
2000-02-08
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
427554, B23K 2600
Patent
active
06023041&
ABSTRACT:
A method of forming a through-via in a laminated substrate by applying a polymeric photo-absorptive layer on an exposed bottom surface of a laminated substrate. A through-via is laser drilled in the substrate from a top of the substrate through the substrate to a bottom of the substrate. The photo-absorptive layer formed on the bottom surface of the substrate is then removed.
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Evans Geoffrey S.
Genco, Jr. Victor M.
W.L. Gore & Associates, Inc.
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