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.

Date of Patent:
Dec. 12, 2023

Filed:

Sep. 20, 2019
Applicant:

Nitto Denko Corporation, Ibaraki, JP;

Inventors:

Motoki Haishi, Osaka, JP;

Kazuto Yamagata, Osaka, JP;

Hironobu Machinaga, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 9/00 (2006.01); B32B 27/08 (2006.01); H01Q 17/00 (2006.01);
U.S. Cl.
CPC ...
H05K 9/0084 (2013.01); B32B 27/08 (2013.01); B32B 2255/02 (2013.01); B32B 2255/10 (2013.01); B32B 2307/20 (2013.01); H01Q 17/00 (2013.01);
Abstract

A radio wave absorber () includes a resistive layer (), an electrical conductor (), and a dielectric layer (). The resistive layer () includes indium tin oxide as a main component. The electrical conductor () reflects a radio wave. The dielectric layer () is disposed between the resistive layer () and the electrical conductor () in the thickness direction of the resistive layer (). The dielectric layer () is formed of a polymer. The content of tin oxide in the indium tin oxide included in the resistive layer () is more than 0 weight % and less than 20 weight %. The number of hydrogen atoms included in the resistive layer () is 5% or more of the total number of indium atoms, tin atoms, oxygen atoms, and hydrogen atoms included in the resistive layer ().


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