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:
Sep. 17, 2002
Filed:
Dec. 27, 2000
Kenji Kawabata, Izumo, JP;
Tomomitsu Yamanishi, Shiga-ken, JP;
Tomohiro Kawanishi, Shimane-ken, JP;
Osamu Yamaoka, Izumo, JP;
Abstract
A dielectric ceramic composition contains 100% by weight of main component composed of about 35 to 55% by weight of SrTiO , about 10 to 35% by weight of PbTiO , about 5 to 12% by weight of CaTiO , about 8 to 25% by weight of Bi O and about 5 to 13% by weight of TiO , and about 0.02 to 0.5% by weight of MnO, about 0.05 to 2% by weight of an oxide of at least one element selected from the group consisting of La, Ce, Nd, Pr, Sm, Dy, Er and Y, and about 0.02 to 0.8% by weight of CuO. The dielectric ceramic composition can provide a capacitor which exhibits a low loss and a high dielectric constant, and which can be used in the high frequency region, thereby permitting the advance in miniaturization of the capacitor.