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:
Mar. 13, 2007
Filed:
Oct. 20, 2004
Applicants:
Yasuyuki Okimura, Inuyama, JP;
Takashi Kasashima, Ichinomiya, JP;
Takeshi Mitsuoka, Konan, JP;
Inventors:
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/465 (2006.01); C04B 35/47 (2006.01); C04B 35/495 (2006.01);
U.S. Cl.
CPC ...
Abstract
A dielectric material containing at least one of Ca and Sr, Ti, Al, at least one of Nb and Ta, and O, wherein these elements fulfill the following four requirements when represented by a compositional formula, aMO-bTiO-(½)cAlO-(½)dMOwherein Mrepresents the at least one of Ca and Sr; Mrepresents the at least one of Nb and Ta; and a, b, c and d represent each a molar ratio, provided that a+b+c+d=1: 0.436<a≦0.500; 0.124<b≦0.325; 0.054<c≦0.150; and 0.170<d<0.346.