Patents by Inventor Guainumbi Medeiros

Guainumbi Medeiros 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).

  • POLYMER GELS, METHOD OF PREPARATION AND USES THEREOF
    Publication number: 20210061960
    Abstract: The invention relates to a method for the preparation of a polymer gel, comprising cross-linking a polymer by using a cyclic dianhydride of carboxylic acid as cross-linking agent and treating the polymer gel with bicarbonate. The invention further concerns the polymer gel obtainable by the method of the invention and the uses thereof in various applications.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 4, 2021
    Inventors: Guainumbi Medeiros, Renata Brito
  • Polymer gels, method of preparation and uses thereof
    Patent number: 10851214
    Abstract: The invention relates to a method for the preparation of a polymer gel, comprising cross-linking a polymer by using a cyclic dianhydride of carboxylic acid as cross-linking agent and treating the polymer gel with bicarbonate. The invention further concerns the polymer gel obtainable by the method of the invention and the uses thereof in various applications.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: December 1, 2020
    Assignee: Rhodia Acetow GmbH
    Inventors: Guainumbi Medeiros, Renata Brito
  • POLYMER GELS, METHOD OF PREPARATION AND USES THEREOF
    Publication number: 20180273697
    Abstract: The invention relates to a method for the preparation of a polymer gel, comprising cross-linking a polymer by using a cyclic dianhydride of carboxylic acid as cross-linking agent and treating the polymer gel with bicarbonate. The invention further concerns the polymer gel obtainable by the method of the invention and the uses thereof in various applications.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 27, 2018
    Inventors: Guainumbi MEDEIROS, Renata BRITO
  • Use of polyamide for the preparation of injection-molded articles and resulting articles
    Patent number: 9919461
    Abstract: The use of thermoplastic polymers for the preparation of injection-molded articles and the resulting articles are described. Also described, is the use of a lubricated polyamide, obtained by means of the addition of at least one lubricant during the polyamide polymerization method, for the preparation of injection-molded articles.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: March 20, 2018
    Assignee: RHODIA POLIAMIDA E ESPECIALIDADES LTDA
    Inventors: Gisela Perez Gesteira, Olivier Chaubet, Thomas Canova, Guainumbi Medeiros, Suzana Kupidlowski
  • USE OF POLYAMIDE FOR THE PREPARATION OF INJECTION-MOLDED ARTICLES AND RESULTING ARTICLES
    Publication number: 20130193614
    Abstract: The use of thermoplastic polymers for the preparation of injection-molded articles and the resulting articles are described. Also described, is the use of a lubricated polyamide, obtained by means of the addition of at least one lubricant during the polyamide polymerization method, for the preparation of injection-molded articles.
    Type: Application
    Filed: March 22, 2011
    Publication date: August 1, 2013
    Applicant: RHODIA POLIAMIDA E ESPECIALIDADED LTDA
    Inventors: Gisela Perez Gesteira, Olivier Chaubet, Thomas Canova, Guainumbi Medeiros, Suzana Kupidlowski