Patents by Inventor César Diógenes de Carvalho

César Diógenes de Carvalho 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).

  • Composite, process for the production thereof, use of said material and articles comprising the said material
    Patent number: 11407194
    Abstract: The present invention refers to a composite material that comprises carbon fiber or sheet made from polyacrylonitrile (PAN) or lignin being indicated for the manufacture of several articles such as high resistance pressure cylinder. Said material presents several advantages such as, for example, to provide improved screening to the articles that comprise it. The referred composite comprises: a first inner layer of polytetrafluorethylene, covered by a second layer of high-density polyethylene, adhered to a third layer of composite containing carbon fiber or sheet made from polyacrylonitrile (PAN) or lignin immersed in cured epoxy resin from a polymeric matrix and a hardener; and a fourth outer layer of composite, comprising aramid fiber impregnated with a dilating fluid and cured epoxy resin from a polymeric matrix and a hardener.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: August 9, 2022
    Inventors: André Gustavo Ottoni Candido Filho, César Diógenes de Carvalho
  • COMPOSITE, PROCESS FOR THE PRODUCTION THEREOF, USE OF SAID MATERIAL AND ARTICLES COMPRISING THE SAID MATERIAL
    Publication number: 20200353711
    Abstract: The present invention refers to a composite material that comprises carbon fiber or sheet made from polyacrylonitrile (PAN) or lignin being indicated for the manufacture of several articles such as high resistance pressure cylinder. Said material presents several advantages such as, for example, to provide improved screening to the articles that comprise it. The referred composite comprises: a first inner layer of polytetrafluorethylene, covered by a second layer of high-density polyethylene, adhered to a third layer of composite containing carbon fiber or sheet made from polyacrylonitrile (PAN) or lignin immersed in cured epoxy resin from a polymeric matrix and a hardener; and a fourth outer layer of composite, comprising aramid fiber impregnated with a dilating fluid and cured epoxy resin from a polymeric matrix and a hardener.
    Type: Application
    Filed: November 14, 2018
    Publication date: November 12, 2020
    Inventors: André Gustavo Ottoni Candido Filho, César Diógenes de Carvalho