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. 01, 2025
Filed:
Jan. 21, 2022
Maxell, Ltd., Kyoto, JP;
Masayuki Toyoda, Kyoto, JP;
Masao Fujita, Kyoto, JP;
MAXELL, LTD., Kyoto, JP;
Abstract
The present invention realizes an electric-wave absorber of a so-called electric-wave interference type, which can favorably absorb absorption electric waves of a desired frequency even when a protective layer for protecting an electric resistance film is formed on the surface of the electric resistance film, and a manufacturing method for the electric-wave absorber. In an electric-wave absorber of an electric-wave interference type, which is formed by sequentially stacking an electric resistance film, a dielectric layer, and an electric-wave shielding layer, absorption electric waves to be absorbed by the electric-wave absorber are waves in a high frequency band in or above a millimeter-wave band, a protective layeris included on the electric resistance film, and a thickness of the dielectric layer is smaller than a reference thickness dst obtained according to the frequency of the absorption electric waves and the permittivity of the dielectric layer.