Compositions: ceramic – Ceramic compositions – Titanate – zirconate – stannate – niobate – or tantalate or...
Reexamination Certificate
2006-09-13
2010-12-28
Group, Karl E (Department: 1793)
Compositions: ceramic
Ceramic compositions
Titanate, zirconate, stannate, niobate, or tantalate or...
C501S134000, C501S135000, C361S321400, C361S321500, C264S615000
Reexamination Certificate
active
07858548
ABSTRACT:
Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise a strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, Al2O3, SiO2, and SrO in various combinations.
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Search Report for Corresponding Application PCT/US06/35426, dated Feb. 9, 2007, 14 pages.
Chu Mike S. H.
Coppens Willibrordus J. L. M. J.
Megherhi Mohammed H.
Römer Elisabeth W. J.
Symes, Jr. Walter J.
Ferro Corporation
Group Karl E
Rankin , Hill & Clark LLP
Wiese Noah
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