Patents by Inventor Juan Leal Gonzalez

Juan Leal Gonzalez 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).

  • Method of making proppant used in gas or oil extraction
    Patent number: 8022019
    Abstract: Method and system for making a spherical proppant having a selected grade from a naturally occurring mined mineral having a hardness of over 6.0 Mohs. The method and system involves preprocessing the mineral mechanically into a semi-dry feedstock comprising a mass of particles with initial sphericity values generally less than 0.60; subjecting the semi-dry feedstock to an aggressive abrasive attrition operation for a process time; and, controlling the process time to a value wherein the particles of the feedstock are converted to final processed particles having a sphericity greater than 0.60 by increasing the sphericity of the feedstock particles by at least 0.10. In addition, the processed particles are screened to obtain a proppant having a selected grade.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: September 20, 2011
    Assignee: Unimin Corporation
    Inventors: David John Rush, Juan Leal Gonzalez
  • METHOD OF MAKING PROPPANT USED IN GAS OR OIL EXTRACTION
    Publication number: 20100197532
    Abstract: Method and system for making a spherical proppant having a selected grade from a naturally occurring mined mineral having a hardness of over 6.0 Mohs. The method and system involves preprocessing the mineral mechanically into a semi-dry feedstock comprising a mass of particles with initial sphericity values generally less than 0.60; subjecting the semi-dry feedstock to an aggressive abrasive attrition operation for a process time; and, controlling the process time to a value wherein the particles of the feedstock are converted to final processed particles having a sphericity greater than 0.60 by increasing the sphericity of the feedstock particles by at least 0.10. In addition, the processed particles are screened to obtain a proppant having a selected grade.
    Type: Application
    Filed: November 20, 2009
    Publication date: August 5, 2010
    Inventors: David John Rush, Juan Leal Gonzalez