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:
Dec. 21, 1993
Filed:
Sep. 18, 1992
Applicant:
Inventors:
Fumio Mizuno, Nagoya, JP;
Manabu Sato, Nagoya, JP;
Assignee:
NGK Spark Plug Company, Ltd., Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501137 ; 501138 ;
Abstract
Disclosed is a BaO-xTiO.sub.2 dielectric ceramic composition (x=3.5 to 4.5) containing BaTi.sub.4 O.sub.9 and Ba.sub.2 Ti.sub.9 O.sub.20, wherein the content ratio of Ba.sub.2 Ti.sub.9 O.sub.20 {Ba.sub.2 Ti.sub.9 O.sub.20 /(BaTi.sub.4 O.sub.9 +Ba.sub.2 Ti.sub.9 O.sub.20)}obtained by a X-ray diffraction maximum peak height integration method described below is less than 0.19,