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. 14, 2012
Filed:
Dec. 15, 2009
Applicants:
Kensaku Asakura, Tokyo, JP;
Yasuhiro Hirobe, Tokyo, JP;
Atsushi Hitomi, Tokyo, JP;
Takeshi Urano, Tokyo, JP;
Inventors:
Kensaku Asakura, Tokyo, JP;
Yasuhiro Hirobe, Tokyo, JP;
Atsushi Hitomi, Tokyo, JP;
Takeshi Urano, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01); H02H 1/00 (2006.01); H02H 1/04 (2006.01); H02H 3/22 (2006.01); H02H 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides an ESD protection device and the like having improved durability against repeated use. An ESD protection device includes a base having an insulating surface, electrodes disposed on the insulating surface and facing but spaced apart from each other, and a functional layer disposed on at least between the electrodes. The electrodes have a multistage structure in which a gap between the electrodes is narrower toward the base.