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.

Date of Patent:
Oct. 11, 2016

Filed:

Feb. 24, 2015
Applicant:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Inventors:

Takahiro Sumi, Kyoto, JP;

Jun Adachi, Kyoto, JP;

Takayuki Tsukizawa, Kyoto, JP;

Kumiko Ishikawa, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01); H02H 9/00 (2006.01); H02H 3/20 (2006.01); H01C 7/10 (2006.01); H01C 7/102 (2006.01); H01C 7/105 (2006.01);
U.S. Cl.
CPC ...
H02H 3/20 (2013.01); H01C 7/102 (2013.01); H01C 7/105 (2013.01); H01C 7/1006 (2013.01);
Abstract

An ESD protection device having high insulation reliability and excellent discharge characteristics is provided. In an ESD protection device including a first and a second discharge electrode disposed to face each other, a discharge auxiliary electrode () formed so as to bridge the first and second discharge electrodes, and an insulating substrate holding the first and second discharge electrodes and the discharge auxiliary electrode (), the discharge auxiliary electrode () is formed of an aggregate of metal grains () each having a core-shell structure comprising a core portion () primarily formed of a first metal and a shell portion () primarily formed of a metal oxide containing a second metal, and the aggregate of metal grains () further includes an insulating resin () which bonds the metal grains () to each other.


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