US Patent Issued to KOREA RAILROAD RESEARCH INSTITUTE on Sept. 22 for "Nonwoven fabric-integrated sleeper pad using rubber pad embedded with stiffener and methods of manufacturing and constructing the same" (South Korean Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,294, issued on Sept. 22, was assigned to KOREA RAILROAD RESEARCH INSTITUTE (Gyeonggi-do, South Korea).

"Nonwoven fabric-integrated sleeper pad using rubber pad embedded with stiffener and methods of manufacturing and constructing the same" was invented by Dae Sang Kim (Gyeonggi-do, South Korea) and Ungjin Kim (Gyeonggi-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides, as a sleeper pad for railroad sleepers in which a nonwoven fabric is attached to a rubber pad by a thermal fusion process, a nonwoven fabric-integrated sleeper pad using a rubber pad embedded with a stiffener and methods of manufacturing a...