Patents by Inventor Sara Vallejo CASTAÑO

Sara Vallejo CASTAÑO 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).

  • FACILE, LOW-ENERGY ROUTES FOR THE PRODUCTION OF HYDRATED CALCIUM AND MAGNESIUM SALTS FROM ALKALINE INDUSTRIAL WASTES
    Publication number: 20230159346
    Abstract: Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 25, 2023
    Inventors: Gaurav N. Sant, Laurent G. Pilon, Erika Blanca Callagon La Plante, Bu Wang, Zongsu Wei, Sara Vallejo Castaño
  • ELECTROCHEMICAL Ca(OH)2 AND/OR Mg(OH)2 PRODUCTION FROM INDUSTRIAL WASTES AND Ca/Mg-CONTAINING ROCKS
    Publication number: 20230125242
    Abstract: A method of preparing metal hydroxides from industrial wastes or alkaline rocks is provided. The method comprise subjecting a mixture comprising a solvent and a solid substrate to a stimulus in order to leach a metal cation from the solid substrate into the solvent, thereby forming a solution comprising the metal cation in the solvent; and contacting the solution of comprising the metal cation with a cathode, thereby electrolytically precipitating the metal hydroxide from the solution. The stimulus may be chemical, mechanical, or both.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 27, 2023
    Inventors: Gaurav Sant, Xin Chen, Ross Alexander Arnold, Dante Adam Simonetti, Sara Vallejo Castano, Dale Philip Prentice, David Jassby, Shengcun Ma
  • Facile, low-energy routes for the production of hydrated calcium and magnesium salts from alkaline industrial wastes
    Patent number: 11560318
    Abstract: Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: January 24, 2023
    Assignee: The Regents of the University of California
    Inventors: Gaurav N. Sant, Laurent G. Pilon, Erika Blanca Callagon La Plante, Bu Wang, Zongsu Wei, Sara Vallejo Castaño
  • FACILE, LOW-ENERGY ROUTES FOR THE PRODUCTION OF HYDRATED CALCIUM AND MAGNESIUM SALTS FROM ALKALINE INDUSTRIAL WASTES
    Publication number: 20210024364
    Abstract: Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.
    Type: Application
    Filed: August 17, 2018
    Publication date: January 28, 2021
    Applicant: The Regents of the University of California
    Inventors: Gaurav N. SANT, Laurent G. PILON, Erika Blanca Callagon LA PLANTE, Bu WANG, Zongsu WEI, Sara Vallejo CASTAÑO