H - Electricity – 01 – L
Patent
H - Electricity
01
L
356/177
H01L 21/02 (2006.01) G03F 7/16 (2006.01) G03F 7/20 (2006.01) H05K 3/00 (2006.01) H05K 3/06 (2006.01)
Patent
CA 1208811
TITLE PRELAMINATION, IMAGEWISE EXPOSURE OF PHOTOHARDENABLE LAYER IN PROCESS FOR SENSITIZING, REGISTERING AND EXPOSING CIRCUIT BOARDS ABSTRACT Actinic radiation exposes photohardenable material in two steps whereby photohardenable material not present as a solid is exposed through a photomask prior to application to a substrate and in a second step is reexposed through the photomask after application of the material to the substrate.
450636
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
LandOfFree
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