Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2006-06-27
2006-06-27
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C501S104000, C501S105000, C501S152000, C423S594120, C423S594130, C423S594160
Reexamination Certificate
active
07067446
ABSTRACT:
A material having a negative or low thermal expansion coefficient and composed substantially of a single crystal system is provided.The material is an oxide represented by the chemical formula ((R4+M2+)1-xA3+2x)(QO4)3(where R stands for at least one tetravalent metal element selected from Zr and Hf; M stands for at least one divalent metal element selected from Mg, Ca, Sr, Ba, and Ra; Q stands for at least one hexavalent metal element selected from W and Mo; and A stands for at least one trivalent metal element selected from Al, Sc, Y, Lu, Ga, and In; 0<x<1) and composed substantially of a single crystal system.
REFERENCES:
patent: 5919720 (1999-07-01), Sleight et al.
patent: 6812178 (2004-11-01), Suzuki et al.
patent: 6844283 (2005-01-01), Kuwata et al.
patent: 2003/0027703 (2003-02-01), Suzuki et al.
patent: 2005/0032625 (2005-02-01), Omote et al.
patent: 2006/0009345 (2006-01-01), Suzuki et al.
patent: 2003-89572 (2003-03-01), None
Search report PCT/JP2004/016677, Feb. 22, 2005.
Omote Atsushi
Suzuki Masa-aki
Suzuki Tomoko
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