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:
Aug. 20, 2002
Filed:
Feb. 23, 2001
Applicant:
Inventors:
Youichi Mizuno, Tokyo, JP;
Yoshikazu Okino, Tokyo, JP;
Kenji Saito, Tokyo, JP;
Noriyuki Kohzu, Tokyo, JP;
Assignee:
Taiyo Yuden Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01G 4/06 ;
U.S. Cl.
CPC ...
H01G 4/06 ;
Abstract
Dielectric ceramic includes dielectric ceramic grains having BaTiO as a major component thereof, a portion of the dielectric ceramic grains having a ferroelectric core and a paraelectric shell into which Mg and a rare earth element are diffused. The shell being located at least on a part of a surface of the core, wherein the shell includes at least two shell portions having different components diffused thereinto. The shell portions can be radially disposed on one another or be in direct contact with the surface of the core.