US Patent Issued to POSCO on Aug. 4 for "Stainless steel having excellent surface electrical conductivity for fuel cell separator and manufacturing method therefor" (South Korean Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,700,597, issued on Aug. 4, was assigned to POSCO (Pohang-si, South Korea).

"Stainless steel having excellent surface electrical conductivity for fuel cell separator and manufacturing method therefor" was invented by Jong-hee Kim (Daejeon, South Korea), Bo-sung Seo (Pohang-si, South Korea), Kwangmin Kim (Pohang-si, South Korea) and Youngjun Kim (Pohang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stainless steel a fuel cell separator including a surface oxide layer having a bandgap energy of 2 eV or less. A value of the surface oxide atomic ratio ((sum of atomic concentrations of metal elements in metal oxide (MO)/(sum of atomic concen...