Method for production of electronic circuit board

Metal fusion bonding – Process – Preplacing solid filler

Reexamination Certificate

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C228S180100

Reexamination Certificate

active

08038051

ABSTRACT:
A method for the deposition of a soldering powder to an electronic circuit board includes the steps of imparting stickiness to an exposed metal surface of a substrate and depositing a soldering powder to the resultant sticking part in a liquid body. The method can further include the steps of heating the substrate, thereby fusing the soldering powder, and forming a solder circuit.

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