Global patent index - EP 0971855 A1

EP 0971855 A1 2000-01-19 - CERIUM OXIDES, ZIRCONIUM OXIDES, Ce/Zr MIXED OXIDES AND Ce/Zr SOLID SOLUTIONS HAVING IMPROVED THERMAL STABILITY AND OXYGEN STORAGE CAPACITY

Title (en)

CERIUM OXIDES, ZIRCONIUM OXIDES, Ce/Zr MIXED OXIDES AND Ce/Zr SOLID SOLUTIONS HAVING IMPROVED THERMAL STABILITY AND OXYGEN STORAGE CAPACITY

Title (de)

CEROXIDE, ZIRKONOXIDE, CE/ZR MISCHOXIDE UND CE/ZR- FESTE LÖSUNGEN MIT VERBESSERTER THERMISCHER STABILITÄT UND SAUERSTOFFSPEICHERKAPAZITÄT

Title (fr)

OXYDES DE CERIUM, OXYDES DE ZIRCONIUM, OXYDES MIXTES Ce/Zr ET SOLUTIONS SOLIDES Ce/Zr PRESENTANT UNE STABILITE THERMIQUE ET UNE CAPACITE DE STOCKAGE D'OXYGENE AMELIOREES

Publication

EP 0971855 A1 (EN)

Application

EP 98914400 A

Priority

  • US 9806437 W
  • US 4263997 P
  • US 83763197 A

Abstract (en)

[origin: CA2285228A1] The production of cerium oxides, zirconium oxides, (Ce, Zr)O2 mixed oxides and (Ce, Zr)O2 solid solutions having improved particle size distribution, surface area, oxygen storage capacity and pore volume by the addition of an additive, such as an anionic or nonionic surfactant, during the formation of the or oxides or precursors thereof.

IPC 1-7 (main, further and additional classification)

C01G 25/02; B01D 53/94; B01J 23/10; C07C 5/42

IPC 8 full level (invention and additional information)

B01D 53/94 (2006.01); B01J 23/10 (2006.01); C01G 25/02 (2006.01); C07C 5/42 (2006.01)

Citation (search report)

See references of WO 9845212A1

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT SE

EPO simple patent family

BR 9807930 A 20010925; CA 2285228 A1 19981015; CN 1255105 A 20000531; EP 0971855 A1 20000119

INPADOC legal status

2001-04-18 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20001027

2000-08-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000616

2000-04-19 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: CUIF, JEAN-PIERRE

2000-04-19 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: KEYER, JULIE, LYNN, SHREEVE

2000-04-19 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: DEUTSCH, STEVEN, ERIC

2000-01-19 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991102

2000-01-19 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE ES FI FR GB IT SE