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. 03, 2021
Filed:
Mar. 20, 2017
Universite DE Rennes 1, Rennes, FR;
UNIVERSITE DE RENNES 1, Rennes, FR;
Abstract
One subject of the present invention is an electromagnetic-wave-absorbing composite material comprising a carrier matrix () and an electromagnetic-wave-absorbing filler (). According to the invention, the carrier matrix () is a cork matrix, which is formed of particles the equivalent diameter Dof which is comprised between 10 μm and 5 mm, and the composite material () has a real permittivity higher than 1.2 and a dielectric loss tangent tan δ higher than 0.1. Another subject of the present invention is a method for producing such a material, and the use of this material as an absorber, in particular in an anechoic chamber, or as a radar absorber in stealth devices, or even to improve the electromagnetic compatibility of electronic devices.