Patents by Inventor Letícia Gomes Ferreira

Letícia Gomes Ferreira 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).

  • Hydrazines and derivatives production process from hydrazines and dicarboxylic acid
    Patent number: 7517983
    Abstract: The present invention describes a process to form hydrazides from the reaction of a hydrazine and a dicarboxylic, using a Lewis acid as a main reagent of the reaction. The reaction occurs in a safe reactional environment, utilizing smooth conditions, neither involving high temperatures nor high pressures, producing the desired products with high yields, between 90-95%. The invention also describes a kit for utilization of chemiluminescent substances, comprised of two solutions.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: April 14, 2009
    Assignee: Universidade Federal Do Rio De Janeiro-UFRG
    Inventors: Cláudio Cerqueira Lopes, Rosângela Sabattini Capella Lopes, Jarí Nobrega Cardoso, Jacqueline Alves da Silva, Letícia Gomes Ferreira