Patents by Inventor Vladimir Barroso

Vladimir Barroso 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).

  • Core or crayon for writing and/or coloring
    Patent number: 12006443
    Abstract: A core or crayon for writing and/or coloring has 15 wt % to 30 wt % of a core base material based on fat and on wax, and 40 wt % to 80 wt % of at least one filler, and 0.1 wt % to 30 wt % of at least one colorant. The core base material includes, based on the total mass of the core, 0.5 wt % to 10 wt % of aluminum distearate, 5 wt % to 20 wt % of oxidized polyethylene wax, and 5 wt %-22 wt % of at least one paraffin wax.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: June 11, 2024
    Assignee: Faber-Castell AG
    Inventors: Vladimir Barroso, Eder D. J. Merola, Gerhard Lugert
  • CORE OR CRAYON FOR WRITING AND/OR COLORING
    Publication number: 20210130638
    Abstract: A core or crayon for writing and/or coloring has 15 wt % to 30 wt % of a core base material based on fat and on wax, and 40 wt % to 80 wt % of at least one filler, and 0.1 wt % to 30 wt % of at least one colorant. The core base material includes, based on the total mass of the core, 0.5 wt % to 10 wt % of aluminum distearate, 5 wt % to 20 wt % of oxidized polyethylene wax, and 5 wt %-22 wt % of at least one paraffin wax.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 6, 2021
    Inventors: Vladimir Barroso, Eder D.J. Merola, Gerhard Lugert
  • Colored lead or colored chalk, pencil containing a colored lead, and process for preparing a colored lead or colored chalk
    Patent number: 10711151
    Abstract: A colored lead for writing, drawing and coloring implements, more particularly erasable, sintered colored lead, or to a colored chalk, more particularly erasable, sintered colored chalk, having a sintered lead or chalk base body which is formed from a lead or chalk base material containing at least one binder with a proportion of from 1 to 25% by weight and at least one filler with a proportion of from 25 to 99% by weight. The sintered lead or chalk base body is impregnated with at least one colorant and at least one lubricant.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: July 14, 2020
    Assignee: Faber-Castell AG
    Inventors: Vladimir Barroso, Eder D. J. Merola, Marcel Prado Atassio, Reiner Appel, Gerhard Lugert
  • COLORED LEAD OR COLORED CHALK, PENCIL CONTAINING A COLORED LEAD, AND PROCESS FOR PREPARING A COLORED LEAD OR COLORED CHALK
    Publication number: 20190100673
    Abstract: A colored lead for writing, drawing and coloring implements, more particularly erasable, sintered colored lead, or to a colored chalk, more particularly erasable, sintered colored chalk, having a sintered lead or chalk base body which is formed from a lead or chalk base material containing at least one binder with a proportion of from 1 to 25% by weight and at least one filler with a proportion of from 25 to 99% by weight. The sintered lead or chalk base body is impregnated with at least one colorant and at least one lubricant.
    Type: Application
    Filed: October 1, 2018
    Publication date: April 4, 2019
    Inventors: Vladimir Barroso, Eder D.J. Merola, Marcel Prado Atassio, Reiner Appel, Gerhard Lugert