Patents by Inventor Giselle de Carvalho Oliveira

Giselle de Carvalho Oliveira 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).

  • Production of propylene glycol from glycerine
    Patent number: 8492597
    Abstract: The present invention describes a process for the production of propylene glycol from glycerol, the transformation of purified glycerol to propylene glycol being carried out by means of a reaction of hydrogenolysis, in the liquid phase, where the two stages of the reaction take place simultaneously and in one and the same reactor (1) under specified conditions of temperature and pressure, and the effluent from the fixed-bed reactor (1) is led to subsequent process stages that comprise separation and purification.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: July 23, 2013
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Carlos René Klotz Rabello, Marlito Gomes Junior, Bernardo Galvão Siqueira, Raphael Bezerra de Menezes, Wilson Kenzo Huziwara, Tomas Shinobu Yamada, Lígia Maria Marçareli de Oliveira, Giselle de Carvalho Oliveira, William Victor Carlos Cândido
  • Production of propyleneglycol from glycerine
    Publication number: 20110295044
    Abstract: The present invention describes a process for the production of propylene glycol from glycerol, the transformation of purified glycerol to propylene glycol being carried out by means of a reaction of hydrogenolysis, in the liquid phase, where the two stages of the reaction take place simultaneously and in one and the same reactor (1) under specified conditions of temperature and pressure, and the effluent from the fixed-bed reactor (1) is led to subsequent process stages that comprise separation and purification.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 1, 2011
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Carlos René Klotz Rabello, Marlito Gomes Junior, Bernardo Galvão Siqueira, Raphael Bezerra de Menezes, Wilson Kenzo Huziwara, Tomas Shinobu Yamada, Ligia Maria Marcareli de Oliveira, Giselle de Carvalho Oliveira, William Victor Carlos Candido