Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2005-01-18
2005-01-18
Bos, Steven (Department: 1754)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C264S125000
Reexamination Certificate
active
06843975
ABSTRACT:
The present invention relates to an oxide sintered body having a perovskite structure represented with a chemical formula of MRuO3(M: one or more types among Ca, Sr, Ba), characterized in that the total content of alkali metals such as Na, K, and Fe, Ni, Co, Cr, Cu, Al is 100 ppm or less, the content of respective elements U, Th is 10 ppb or less, and the relative density is 90% or more, and provides an oxide sintered body and the manufacturing method thereof having a pervoskite structure represented with the chemical formula MRuO3(M: one or more types among Ca, Sr, Ba) by using a MRuO3sintered body raw material refined to a high density of 4N or more, which enables sintering at low temperatures, and which is capable of obtaining a high-density sintered body.
REFERENCES:
patent: 5624542 (1997-04-01), Shen et al.
patent: 5995359 (1999-11-01), Klee et al.
patent: 6555864 (2003-04-01), Cross et al.
patent: 10-330924 (1998-12-01), None
patent: 2000-001774 (2000-01-01), None
patent: 2000-128638 (2000-05-01), None
Machine translation of the specification of Japan 2000-128638, May 2000.*
Patent Abstracts of Japan, one page English language Abstract for JP 2000-128638, May 2000.
Patent Abstracts of Japan, one page English language Abstract for JP 2000-001774, Jan. 2000.
Patent Abstracts of Japan, one page English language Abstract for JP 10-330924, Dec. 1998.
Bos Steven
Howson and Howson
Nikko Materials Company Limited
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