ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,306, issued on Aug. 26, was assigned to MADE WATERPROOF INC. (Daegu, South Korea).
"Waterproofing method using acrylic material" was invented by Sang Hong Kwon (Daegu, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a waterproofing method using an acrylic injection material, more particularly, the method including confirming a crack site; perforating a plurality of injection holes from an upper part of the crack site; installing packers in the perforated injection holes; filling the crack site by injecting a two-liquid type acrylic injection material into the packers installed in the injection holes; and removing the installed...