EP2116511A1 - PROCESS FOR PRODUCING NANOPARTICLE OF PRUSSIAN BLUE TYPE METAL COMPLEX, PRUSSIAN BLUE TYPE METAL COMPLEX NANOPARTICLE OBTAINED BY THE SAME, DISPERSION OF THE NANOPARTICLES, METHOD OF REGULATING COLORATION OF THE NANOPARTICLES, AND ELECTRODE AND TRANSMITTED-LIGHT REGULATOR BOTH EMPLOYING THE NANOPARTICLES | Patent Bear