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:
Oct. 21, 2025
Filed:
Nov. 28, 2022
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Universidade Federal DE Minas Gerais—ufmg, Belo Horizonte, BR;
Rodrigo Suhett De Souza, Ilha do Fundão, BR;
Ricardo De Araujo Cid Da Silva, Ilha do Fundão, BR;
Yara Luiza Brasil Zanon, Pampulha, BR;
Vinícius Gomide De Castro, Pampulha, BR;
Miriam Cristina Santos Amaral Moravia, Pampulha, BR;
Glaura Goulart Silva, Pampulha, BR;
Bruna Caroline De Jesus Ribeiro, Pampulha, BR;
Ana Luiza Silvestre Assis, Pampulha, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Universidade Federal De Minas Gerais—UFMG, Belo Horizonte, BR;
Abstract
The present invention refers to a surface coating of commercial polyamide (PA) membranes with graphene oxide (GO) using a technology that involves spin-coating with specific sequence of low and high rotation, interface phenomena provided by a set of materials containing ethyl alcohol in high concentration, as well as morphological characteristics and customized surface chemistry of GO, among other conditions that allow a differentiated technology to obtain an effective coating of GO on PA membrane.