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:
Jul. 07, 2020
Filed:
Dec. 11, 2019
Tdk Corporation, Tokyo, JP;
Masayuki Uchida, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A chip varistor includes two functional layers (that is, a first functional layer and a second functional layer) inside an element body, and the two functional layers have substantially the same electrostatic capacitance. In the chip varistor, the element body is made highly resistive from an outer surface due to alkali metal containing portion. However, the alkali metal containing portion does not reach the first functional layer and the second functional layer. Therefore, the alkali metal containing portion curbs a parasitic capacitance of the chip varistor without affecting the electrostatic capacitances of the first functional layer and the second functional layer. Accordingly, the chip varistor includes the two functional layers in which variations in capacitance are curbed.