ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,779,747, issued on Nov. 3, was assigned to HEEDAEP ARK (Busan, South Korea) and SAM BU FINE CHEMICAL Co. LTD. (Gimhae-Si, South Korea).
"Foam sheet for shoe with recycled PU scrap powder" was invented by Heedae Park (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a foam sheet for shoes containing recycled PU scrap powder manufactured by the method of manufacturing the foam sheet, including eco-friend Polyurethane (PU) foam composition prepared by water foam, is provided by first mixing recycled PU scrap powder with polyol and then reacting with the secondary addition of recycled PU scrap powder by contr...