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:
Jun. 15, 2021
Filed:
Feb. 18, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Yoshiko Higashi, Osaka, JP;
Eiichi Koga, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C 7/112 (2006.01); H01C 7/12 (2006.01); H01C 17/00 (2006.01); C04B 35/453 (2006.01); H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
H01C 7/112 (2013.01); C04B 35/453 (2013.01); H01C 7/12 (2013.01); H01C 17/00 (2013.01); H01L 27/0248 (2013.01);
Abstract
A chromaticity of zinc oxide is measured. The durability of a zinc oxide varistor is evaluated based on the chromaticity. This provides a varistor with a high durability stably.