Compositions – Barrier layer device compositions – Group vi element-containing
Reexamination Certificate
2007-06-19
2007-06-19
Kopec, Mark (Department: 1751)
Compositions
Barrier layer device compositions
Group vi element-containing
C252S06230T, C252S062200, C252S500000, C252S518100, C252S521300, C338S0220SD, C338S0220SD, C501S123000, C501S127000, C501S139000, C501S152000, C423S599000, C423S594100, C423S594160, C423S600000
Reexamination Certificate
active
10724253
ABSTRACT:
A sintered body for thermistor device comprising: at least one element selected from elements of group 3 in a periodic table proviso that La is excluded; at least one element selected from elements of group 2 in a periodic table; Mn; Al; and oxygen, and being substantially free from any transition metal other than Mn and the at least one element selected from elements of group 3 in the periodic table.
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patent: 5403461 (1995-04-01), Tuller et al.
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patent: 6878304 (2005-04-01), Ogata et al.
patent: 0 626 356 (1994-11-01), None
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European Search Report for EP 03 25 7495 dated Sep. 16, 2004.
Chosokabe Takaaki
Iwaya Masaki
Yamada Naoki
Kopec Mark
NGK Spark Plug Co. Ltd.
Vijayakumar Kallambella
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