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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.:

US 9487445 B1

PDFFull Text
Date of Patent:
Nov. 08, 2016

Filed:

Mar. 24, 2014

Ceramic composition

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Hidesada Natsui, Tokyo, JP;

Taku Masai, Tokyo, JP;

Sanshiro Aman, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Noah Wiese

Int. Cl.
CPC ...
C04B 35/47 (2006.01); C04B 35/475 (2006.01); H01B 3/12 (2006.01); H01L 41/43 (2013.01); H01L 41/187 (2006.01); C01G 49/00 (2006.01); C04B 35/26 (2006.01); C04B 35/462 (2006.01); C04B 35/00 (2006.01);
U.S. Cl.
CPC ...
C04B 35/475 (2013.01); C01G 49/00 (2013.01); C01G 49/0036 (2013.01); C04B 35/00 (2013.01); C04B 35/26 (2013.01); C04B 35/462 (2013.01); C04B 35/47 (2013.01); H01B 3/12 (2013.01); H01L 41/187 (2013.01); H01L 41/1878 (2013.01); H01L 41/43 (2013.01); C01P 2002/34 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3213 (2013.01); C04B 2235/3232 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5454 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/765 (2013.01); C04B 2235/768 (2013.01);
Abstract

A novel ceramic composition having a high relative dielectric constant. A ceramic composition includes a unit cell having at least two crystal structures selected from the group made of a monoclinic crystal, a tetragonal crystal, an orthorhombic crystal, and a rhombohedral crystal, characterized in that when the crystal structures are represented by the symmetry notation according to the Glazer method, namely xyz, n1, n2, and n3 are at least one selected from the group made of + and −, or at least two selected from the group made of 0, +, and −. By using this ceramic composition, a novel ceramic composition having a high relative dielectric constant can be obtained.

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