Patents by Inventor Nestor De Buen-Unna

Nestor De Buen-Unna 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).

  • Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process
    Patent number: 6824605
    Abstract: An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight of a humectant agent, from 0 to about 1% by weight of a nonionic surfactant, from 0 to about 3% by weight basis of a bactericidal agent, from about 3.3% to 3.8% by weight of hydroxypropylethyl or methylcellulose from 0 to about 0.3% by weight of an antifoaming agent and from about 55.8% to 64.2% by weight of a highly reactive non-crystalline calcinated silica aluminant.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: November 30, 2004
    Inventors: Nestor De Buen-Unna, Luis German Guevara-Nieto, Jaime Grau-Genesias
  • Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process
    Patent number: 6660077
    Abstract: An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight of a humectant agent, from 0 to about 1% by weight of a non ionic surfactant, from 0 to about 3% by weight basis of a bactericidal agent, from about 3.3% to 3.8% by weight of hydroxypropylethyl or methylcellulose from 0 to about 0.3% by weight of an antifoaming agent and from about 55.8% to 64.2% by weight of a highly reactive non-crystalline calcinated silica aluminant.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: December 9, 2003
    Inventors: Nestor De Buen-Unna, Luis German Guevara-Nieto, Jaime Grau-Genesias
  • Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process
    Publication number: 20030150362
    Abstract: An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight.of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight of a humectant agent, from 0 to about 1% by weight of a nonionic surfactant, from 0 to about 3% by weight basis of a bactericidal agent, from about 3.3% to 3.8% by weight of hydroxypropylethyl or methylcellulose from 0 to about 0.3% by weight of an antifoaming agent and from about 55.8% to 64.2% by weight of a highly reactive non-crystalline calcinated silica aluminant.
    Type: Application
    Filed: March 11, 2003
    Publication date: August 14, 2003
    Inventors: Nestor De Buen-Unna, Luis German Guevara-Nieto, Jaime Grau-Genesias
  • Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process
    Publication number: 20030061970
    Abstract: An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight of a humectant agent, from 0 to about 1% by weight of a non ionic surfactant, from 0 to about 3% by weight basis of a bactericidal agent, from about 3.3% to 3.8% by weight of hydroxypropylethyl or methylcellulose from 0 to about 0.3% by weight of an antifoaming agent and from about 55.8% to 64.2% by weight of a highly reactive non-crystalline calcinated silica aluminant.
    Type: Application
    Filed: July 10, 2001
    Publication date: April 3, 2003
    Inventors: Nestor De Buen-Unna, Luis German Guevara-Nieto, Jaime Grau-Genesias