(19)
(11) EP 1 771 383 A2

(12)

(88) Date of publication A3:
12.01.2006

(43) Date of publication:
11.04.2007 Bulletin 2007/15

(21) Application number: 05739092.4

(22) Date of filing: 27.04.2005
(51) International Patent Classification (IPC): 
C01G 25/00(2006.01)
(86) International application number:
PCT/JP2005/008464
(87) International publication number:
WO 2005/102933 (03.11.2005 Gazette 2005/44)
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 27.04.2004 JP 2004131619

(71) Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota-shi, Aichi-ken 471-8571 (JP)

(72) Inventors:
  • MIURA, Masahide
    Toyota-shi, Aichi 4718571 (JP)
  • KUNO, Oji
    Toyota-shi, Aichi 4718571 (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) ZIRCONIA CORE PARTICLES COATED WITH CERIA PARTICLES, PRODUCTION PROCESS THEREOF AND EXHAUST GAS PURIFYING CATALYST