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:
Aug. 08, 2023
Filed:
Feb. 06, 2020
Lintec Corporation, Tokyo, JP;
Taiga Matsushita, Saitama, JP;
LINTEC Corporation, Tokyo, JP;
Abstract
An aspect of the present invention provides an electromagnetic wave absorption film that is less susceptible to the surrounding environment. An electromagnetic wave absorption filmhas: a planar base; a first electromagnetic wave absorption patternformed on the base; a second electromagnetic wave absorption patternformed on the base; and a third electromagnetic wave absorption patternformed on the base, wherein when A [GHz] is defined as a frequency at which an absorption amount of an electromagnetic wave absorbed by the first electromagnetic wave absorption patternexhibits its local maximum value in a range from 20 to 110 GHz, B [GHz] satisfies Expression (1), B [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the second electromagnetic wave absorption patternexhibits its local maximum value, and C [GHz] satisfies Expression (2), C [GHz] being the value of a frequency at which an absorption amount of an electromagnetic wave absorbed by the third electromagnetic wave absorption patternexhibits its local maximum value,1.037×≤1.30×  Expression (1)0.60×≤0.963×  Expression (2).