Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2011-03-22
2011-03-22
Kopec, Mark (Department: 1761)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C423S598000
Reexamination Certificate
active
07910027
ABSTRACT:
It is intended to provide a semiconductor ceramic composition capable of shifting the Curie temperature to a positive direction as well as of obtaining an excellent jump characteristic while suppressing an increase in room temperature resistivity to a minimum value. There is provided a semiconductor ceramic composition in which a portion of Ba of BaTiO3is substituted by Bi—Na, the semiconductor ceramic composition being obtained by sintering a mixed calcined powder of a BT calcined powder containing (BaR)TiO3or Ba(TiM)O3(wherein each of R and M is a semiconductive dopant), wherein a part of BaCO3and TiO2are remained therein; and a BNT calcined powder containing a (BiNa)TiO3powder.
REFERENCES:
patent: 7090785 (2006-08-01), Chiang et al.
patent: 7700509 (2010-04-01), Shimada et al.
patent: 7704906 (2010-04-01), Shimada et al.
patent: 2009/0105064 (2009-04-01), Shimada et al.
patent: 2010/0012905 (2010-01-01), Shimada et al.
patent: 2010/0075824 (2010-03-01), Shimada
patent: 56-169301 (1981-12-01), None
patent: 2006-179692 (2006-07-01), None
patent: WO 2006/106910 (2006-10-01), None
patent: WO2006/118274 (2006-11-01), None
Huo et al “Effects of Bi1/2Na1/2TiO3 on the Curie temperature and the PTC effects of BaTiO3-based positive temperature coefficient ceramics”, Sensors and Actuators A 128 (2006) 265-69.
Shimada Takeshi
Toji Kazuya
Hitachi Metals Ltd.
Kopec Mark
Stein McEwen, LLP
LandOfFree
Semiconductor ceramic composition and method for producing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semiconductor ceramic composition and method for producing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor ceramic composition and method for producing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2688981