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. 21, 2017
Filed:
Dec. 27, 2012
Littelfuse, Inc., Chicago, IL (US);
Shuying Liu, Guangdong, CN;
Littelfuse, Inc., Chicago, IL (US);
Abstract
A varistor may include a varistor ceramic that includes zinc oxide having a molar percent greater than 90 percent and a set of metal oxides, where the set of metal oxides includes BiOhaving a molar fraction between 0.2 and 2.5 percent; CoOhaving a molar fraction between 0.2 and 1.2 percent; MnOhaving a molar fraction between 0.05 and 0.5 percent; CrOhaving a molar fraction between 0.05 and 0.5 percent; NiO having a molar fraction between 0.5 and 1.5 percent; SbOoxide having a molar fraction between 0.05 and 1.5 percent; BOhaving a molar fraction between 0.001 to 0.03 percent; and aluminum in the form of an oxide having a molar fraction between 0.001 and 0.05 percent.