The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2001
Filed:
May. 24, 2000
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01G 4/06 ;
U.S. Cl.
CPC ...
H01G 4/06 ;
Abstract
A nonreducing dielectric ceramic has a perovskite structure represented by the formula ABO,with a principal crystal phase comprising barium titanate as a principal constituent. The crystal axis ratio c/a determined by the X-ray diffraction method at a temperature of−25° C. or more satisfies the relationship 1.000≦c/a≦1.003. Preferably, the nonreducing dielectric ceramic has a phase transition point of less than −25° C. Preferably, the nonreducing dielectric ceramic contains at least one rare-earth element. A monolithic ceramic capacitor including dielectric ceramic layers composed of a nonreducing dielectric ceramic in accordance with the present invention is also disclosed.