B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/23
B05D 3/12 (2006.01) B05D 5/00 (2006.01) G03F 7/16 (2006.01) H05K 3/28 (2006.01) H05K 3/00 (2006.01)
Patent
CA 2006205
TITLE PE-0108 BUBBLE FREE LIQUID SOLDER MASK-COATED PRINTED CIRCUIT BOARDS BY FLUID PRESSURIZING ABSTRACT A method is disclosed of obtaining a bubble free photosensitive liquid layer and an interface with a substrate by applying uniform fluid pressure after coating the liquid on the substrate.
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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