Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2005-11-22
2008-10-07
Thomas, Eric (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S321500
Reexamination Certificate
active
07433173
ABSTRACT:
Provided is a multilayer ceramic capacitor having a capacitor body formed by alternately laminating a dielectric layer and an internal electrode layer, and an external electrode formed on both ends of the capacitor body. The dielectric layer has at least two type of barium titanate crystal grains that differ from one another in at least one selected from Ca composition concentration, Sr composition concentration, and Zr composition concentration, and a grain boundary phase. If this multilayer ceramic capacitor employs, as a dielectric layer, a dielectric ceramic that contains barium titanate crystal grains in which part of Ba is substituted by Ca, Sr, or Zr, it is capable of suppressing the grain growth of crystal grains, and improving relative dielectric constant, temperature characteristic, and high-temperature load test characteristic, for example, in high-volume manufacturing using a tunnel type large kiln.
REFERENCES:
patent: 7057876 (2006-06-01), Fujioka et al.
patent: 2004/0178436 (2004-09-01), Baniecki et al.
patent: 2006/0023399 (2006-02-01), Fujioka et al.
patent: 11-157928 (1999-06-01), None
patent: 2002-284571 (2002-10-01), None
patent: 2003-040671 (2003-02-01), None
patent: 2004-262717 (2004-09-01), None
patent: 2004-281446 (2004-10-01), None
Fukuda Daisuke
Iwasaki Kenichi
Kamigaki Kousei
Matsubara Kiyoshi
Nishigaki Masahiro
Hogan & Hartson LLP
Kyocera Corporation
Thomas Eric
LandOfFree
Multilayer ceramic capacitor and method for manufacturing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayer ceramic capacitor and method for manufacturing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer ceramic capacitor and method for manufacturing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4010306