Patents by Inventor Maria Isabel Calicchio Lopes

Maria Isabel Calicchio Lopes 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).

  • Method for determination of the total acid number and naphthenic acid number of petroleum, petroleum cuts and petroleum emulsions of water-in-oil type by mid-infrared spectroscopy
    Patent number: 8222605
    Abstract: The present invention relates to a method for the determination of the total acid number and naphthenic acid number of petroleum, petroleum cuts and petroleum emulsions of water-in-oil type by mid-infrared spectroscopy utilising correlation between data gathered by means of absorption spectrums obtained with a Fourier-transform infrared spectrophotometer operating in the mid-infrared band equipped with an attenuated total reflectance (ATR) accessory, and acidity results obtained through reference methods utilising a multivariate regression model.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: July 17, 2012
    Assignee: Petroleo Brasileiro S.A.—Petrobras
    Inventors: Monica Teixeira Da Silva, Geciliane Henriques De Andrade, Maria Isabel Calicchio Lopes, Claudia Maria Silva Braga
  • METHOD FOR DETERMINATION OF THE TOTAL ACID NUMBER AND NAPHTHENIC ACID NUMBER OF PETROLEUM, PETROLEUM CUTS AND PETROLEUM EMULSIONS OF WATER-IN-OIL TYPE BY MID-INFRARED SPECTROSCOPY
    Publication number: 20090294672
    Abstract: The present invention relates to a method for the determination of the total acid number and naphthenic acid number of petroleum, petroleum cuts and petroleum emulsions of water-in-oil type by mid-infrared spectroscopy utilising correlation between data gathered by means of absorption spectrums obtained with a Fourier-transform infrared spectrophotometer operating in the mid-infrared band equipped with an attenuated total reflectance (ATR) accessory, and acidity results obtained through reference methods utilising a multivariate regression model.
    Type: Application
    Filed: February 10, 2009
    Publication date: December 3, 2009
    Applicant: PETROLEO BRASILEIRO S.A. PETROBRAS
    Inventors: Monica Teixeira da Silva, Gecilaine Henriques De Andrade, Maria Isabel Calicchio Lopes, Claudia Maria Silva Braga