Chemical products used in industry, science, photography, namely, photopolymer; Dry photopolymer coating used specifically as a photoimageable protective layer, namely, a solder mask for the manufacture of printed circuit board and other electronic parts; coating in the nature of solder mask for use in the manufacture of electronic parts; photopolymer chemical products, namely, dry film photopolymer in sheet form, and in multiple-ply form used in the electronics industry; dry film solder mask...

DRY FILM SOLDER MASK USED IN THE MANUFACTURE OF ELECTRONIC PARTS