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:
Nov. 07, 2023
Filed:
Mar. 27, 2018
Nitto Denko Corporation, Ibaraki, JP;
Kazuto Yamagata, Osaka, JP;
Hironobu Machinaga, Osaka, JP;
Eri Ueda, Osaka, JP;
Hiroichi Ukei, Osaka, JP;
Takehiro Ui, Osaka, JP;
NITTO DENKO CORPORATION, Ibaraki, JP;
Abstract
An electromagnetic wave absorber () includes a dielectric layer (), a resistive layer (), and an electrically conductive layer (). The resistive layer () is disposed on one principal surface of the dielectric layer (). The electrically conductive layer () is disposed on the other principal surface of the dielectric layer () and has a sheet resistance lower than a sheet resistance of the resistive layer (). The resistive layer () has a sheet resistance of 200 to 600Ω/□. When the resistive layer () is subjected to an immersion treatment in which the resistive layer () is immersed in a 5 weight % aqueous solution of NaOH for 5 minutes, an absolute value of a difference between a sheet resistance of the resistive layer () before the immersion treatment and a sheet resistance of the resistive layer () after the immersion treatment is less than 100Ω/□.