ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,727,090, issued on Sept. 1, was assigned to Gebr. Schmid GmbH (Freudenstadt, Germany).
"Method for manufacturing printed circuit boards" was invented by Christian Schmid (Freudenstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing printed circuit boards includes some or all of: chemically or electrically applying metallic layers to a substrate; incorporating bores into the substrate; through-contacting the bores incorporated into the substrate; applying a layer from a photoresist to an electrically conducting layer in a masking step; exposing the photoresist while using an exposure mask in an exposing step; removing ex...