US Patent Issued to POSCO on May 20 for "Graphene-coated steel sheet and method for producing same" (South Korean Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,933, issued on May 20, was assigned to POSCO (Pohang-si, South Korea).

"Graphene-coated steel sheet and method for producing same" was invented by Hye-Jin Yoo (Gwangyang-si, South Korea), Jung-Su Kim (Gwangyang-si, South Korea), Je-Hoon Baek (Gwangyang-si, South Korea) and Chang-Se Byeon (Gwangyang-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention pertains to a method for producing a graphene-coated steel sheet, the method comprising the steps of: modifying the surface of the steel sheet so that the surface is negatively charged; forming a positively-charged first graphene oxide layer on the surface-modified steel ...