Patents by Inventor Ratiba BENZERGA

Ratiba BENZERGA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electromagnetic-wave-absorbing materials for various applications
    Patent number: 11081802
    Abstract: One subject of the present invention is an electromagnetic-wave-absorbing composite material comprising a carrier matrix (11) and an electromagnetic-wave-absorbing filler (12). According to the invention, the carrier matrix (11) is a cork matrix, which is formed of particles the equivalent diameter Del of which is comprised between 10 ?m and 5 mm, and the composite material (1) has a real permittivity higher than 1.2 and a dielectric loss tangent tan ? 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.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: August 3, 2021
    Assignee: UNIVERSITE DE RENNES 1
    Inventors: Chloé Mejean, Ratiba Benzerga, Ala Sharaiha
  • NEW ELECTROMAGNETIC-WAVE-ABSORBING MATERIALS FOR VARIOUS APPLICATIONS
    Publication number: 20190103679
    Abstract: One subject of the present invention is an electromagnetic-wave-absorbing composite material comprising a carrier matrix (11) and an electromagnetic-wave-absorbing filler (12). According to the invention, the carrier matrix (11) is a cork matrix, which is formed of particles the equivalent diameter Del of which is comprised between 10 ?m and 5 mm, and the composite material (1) has a real permittivity higher than 1.2 and a dielectric loss tangent tan ? 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.
    Type: Application
    Filed: March 20, 2017
    Publication date: April 4, 2019
    Inventors: Chloé MEJEAN, Ratiba BENZERGA, Ala SHARAIHA