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Inventor: Yokoi; Hideo
Address: Hyogo-ken, JP
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5582785 |
Method for preparing composite oxide having oxygen absorbing and desorbing capability |
December 10, 1996 |
| A method for preparing a composite oxide having oxygen absorbing and desorbing capability involves the steps of: providing a starting composite oxide comprising cerium oxide, zirconium oxide, and hafnium oxide; subjecting the starting composite oxide to heating-deoxidation to give a |
| 5580536 |
Composite oxide having oxygen absorbing and desorbing capability and method for preparing same |
December 3, 1996 |
| A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.89% by weight of cerium oxide, 1-95% by weight of zirconium oxide, 0.01-20% by weight of hafnium oxide, and 0.1-10% by weight of an additional metal oxide selected from titanium oxide, tungsten oxide, |
| 5571492 |
Composite oxide having oxygen absorbing and desorbing capability |
November 5, 1996 |
| A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.99% by weight of cerium oxide, 1-95% by weight of zirconium oxide and 0.01-20% by weight of hafnium oxide. The composite oxide includes .PHI.' phase as a crystal phase and has oxygen absorbing and desorbi |
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