ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,397, issued on March 31, was assigned to Seoul National University R&DB Foundation (Seoul, South Korea), Institute for Basic Science (Daejeon, South Korea) and Kangwon University-Industry Cooperation Foundation (Chuncheon-si, South Korea).
"Tubular polymer electrolyte membrane fuel cell stack" was invented by Yung-Eun Sung (Uiwang-si, South Korea), Yong-Hun Cho (Gunpo-si, South Korea) and Wonchan Hwang (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel cell stack including a plurality of fuel cell units having a truncated cone shape and connected in series with each other is proposed. The series connection of the fuel cell un...