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:
Nov. 26, 2019
Filed:
Feb. 10, 2016
King Abdulaziz University, Jeddah, SA;
Ahmed A. Al-Ghamdi, Jeddah, SA;
Yusuf Al-Turki, Jeddah, SA;
Fahrettin Yakuphanoglu, Elazig, TR;
Farid El-Tantawy, Ismailia, EG;
King Abdulaziz University, Jeddah, SA;
Abstract
A composition of graphene oxide free-standing film, a method of making the film, and a method of using the film to shield electromagnetic radiation particularly at microwave frequencies from 1 GHz to 12 GHz. The composition comprises stacked layers of graphene oxide nanosheets oriented parallel to the film surface and stacked layers of graphene oxide nanosheets oriented perpendicular to the film surface. The method of making the composition includes forming graphene oxide by arc-discharge between graphite electrodes in the presence of oxygen gas to form a graphene oxide soot, suspending the graphene oxide soot in water to form a colloid, depositing the colloid onto a substrate to form a wet paper, and drying the wet paper to form the film. The method of using the composition to shield electromagnetic radiation includes enclosing and/or encapsulating an electromagnetic radiation generating source with the free-standing film to shield electromagnetic radiation.