Patents by Inventor Bienvenido De Cuendias Herrero

Bienvenido De Cuendias Herrero 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).

  • Process for obtaining low residual aramid materials
    Patent number: 9580863
    Abstract: The present invention provides for a process for reducing the content of one or more residuals in aramid fibers or filaments, comprising, in this order, the steps of introducing the aramid fiber or filaments into a extraction solution adjusted to a pH ranging from of 2 to 7, adjusting the extraction solution and the aramid fibers or filaments to a temperature of to from 80° C. to 140° C., removing the aramid fibers or filaments from the extraction solution, introducing the aramid fiber or filaments into a first rinsing solution adjusted to a pH ranging from of 2 to 7, optionally comprising a detergent, adjusting the first rinsing solution and the aramid fibers and filaments to a temperature of from 70° C. to 100° C., removing the aramid fibers or filaments from the first rinsing solution.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: February 28, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Yves Bader, Kurt Hans Wyss, Bienvenido De Cuendias Herrero