Patents/Inventors

Hiroaki Koyama

TokyoJP1 patent

2 Patents

US121765472024
Catalyst Layer for Polymer Electrolyte Fuel Cells, Membrane-electrode Assembly, and Polymer Electrolyte Fuel Cell
TOPPAN PRINTING CO., Ltd.
0 cites
US116672612023
Gas Generator
NIPPON KAYAKU KABUSHIKI KAISHA
0 cites