1
Yoshichika Umemoto, Toshio Nakatani, Kimio Ohuchi: Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification. Daiichi Kigenso Kagaku Kogyo, Sughrue Mion Zinn Macpeak & Seas PLLC, November 21, 2000: US06150299 (24 worldwide citation)

Mixed oxides excellent in thermal stability of specific surface area and in oxidation-reduction performance are provided on an industrial scale. Catalyst materials useful in exhaust gas purification are also provided. The invention is concerned with mixed oxides containing cerium, zirconium and sulf ...


2
Yoshichika Umemoto, Toshio Nakatani, Kimio Ouchi: Zirconium- and cerium-based mixed oxide and method of production thereof. Daiichi Kigenso Kagaku Kogyo, Baker Botts L, July 3, 2001: US06255242 (21 worldwide citation)

A zirconium- and cerium-based mixed oxide having good thermal stability and oxidation-reduction performance, in particular, is provided. The mixed oxide which comprises zirconium and cerium is characterized in (1) that cubic phase purity of a zirconia- and ceria-based solid solution is not less than ...