05.01.19
US Patent No. 10,214,709 B2; Jeong Yup Kim, Seoul, has received a US patent for an oxygen-based cleaning composition in powder form. The formulation contains a layer comprising a hydrogen peroxide addition compound powder for producing hydrogen peroxide; a surfactant layer formed by coating an outer surface of the hydrogen peroxide addition compound layer with a liquid surfactant; a saponin layer formed by coating an outer surface of the surfactant layer with a saponin powder; and a sodium bicarbonate layer formed by coating an outer surface of the saponin layer with a sodium bicarbonate powder.