Patents by Inventor Rosângela Sabattini Capella Lopes

Rosângela Sabattini Capella 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).

  • Substituted cumarines, process for the production of said cumarines and composition containing said cumarines
    Patent number: 7674398
    Abstract: Present invention refers to substituted cumarines that are capable to emit fluorescent light when illuminated by wave lengths within ultraviolet range. Present invention also refers to process of production of said substituted cumarines, well as provides compositions containing said substituted cumarines, especially compositions containing said cumarines and volatile solvents and/or adjuvants. Said compositions can be used in objects of great value for its owner, in view of facilitating the identification of such objects.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: March 9, 2010
    Assignee: Universidade Federal do Rio de Janerio UFRJ
    Inventors: Claudio Cerqueira Lopes, Rosangela Sabattini Capella Lopes, Jari Cardoso Norbega, Glaucia Slans Alves Barbosa, Maicon Guerra, Jose Roque Mota Carvalho
  • 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