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. 19, 2013
Filed:
Apr. 13, 2010
Eiichi Koga, Hokkaido, JP;
Noriko Sawada, Hokkaido, JP;
Mikinori Amisawa, Hokkaido, JP;
Seiichi Minami, Hokkaido, JP;
Hirofumi Yamada, Hokkaido, JP;
Tomohisa Okimoto, Hokkaido, JP;
Eiichi Koga, Hokkaido, JP;
Noriko Sawada, Hokkaido, JP;
Mikinori Amisawa, Hokkaido, JP;
Seiichi Minami, Hokkaido, JP;
Hirofumi Yamada, Hokkaido, JP;
Tomohisa Okimoto, Hokkaido, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A surge absorbing element has a first electrode, a second electrode, and a ceramic layer. The second electrode is opposed to the first electrode. The ceramic layer has a polycrystal structure including a plurality of crystal grains showing voltage nonlinearity, and is at least partially brought into contact with the first electrode and the second electrode. The ceramic layer has a void inside therein, and surface discharge is generated on surfaces, exposed to the void, of the crystal grains, whereby electric conduction is attained between the first and second electrodes.