Patents Assigned to Mint-Pac Technologies
  • Patent number: 4983246
    Abstract: This present invention is directed to a new technique for supplying and applying resist to copper and other substrate material. In accordance with the present invention, a hot stamping resist decal comprises a release sheet bearing a pattern of the dried residue of a resist. The resist comprises an ester of a styrene/maleic anhydride copolymer, a particulate filler, and a solvent. Advantageously, a plasticizer is included in the resist formulation and the particulate filler preferably includes a clay. The method of manufacturing the inventive hot stamping resist decal and for hot stamping the decal on a circuit board form additional aspects of the present invention.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: January 8, 1991
    Assignee: Mint-Pac Technologies
    Inventor: William M. Bunting