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:
Apr. 02, 2013
Filed:
Oct. 24, 2008
Martha Teresa Pantoja DE Oliveira Castro, Ondina, BR;
Cristina Maria Assis Lopes Tavarez Da Mata Hermida Quintella, Lauro de Freitas, BR;
Joao Nazareth Lafayette DE Mello Mac-culloch, Pituba, BR;
Martha Teresa Pantoja De Oliveira Castro, Ondina, BR;
Cristina Maria Assis Lopes Tavarez da Mata Hermida Quintella, Lauro de Freitas, BR;
Joao Nazareth Lafayette De Mello Mac-Culloch, Pituba, BR;
Petroleo Brasileiro S.A., Rio de Janeiro, BR;
Universidade Federal da Bahia, Salvador, BR;
Abstract
The present invention refers to the process of determination of light elements, i.e., molar mass lower than 23, within inorganic materials, by means of spectra analysis between 5 keV and 22 keV, obtained from these materials when exposed to X radiation. Particularly, the invention refers to the direct determination of carbon content in steel and alloys. According to the invention process, the inorganic materials are exposed to X radiation and the spectra are organized as a matrix and mathematically processed using chemometric tools properly selected.