Patents by Inventor Gustavo Quintero

Gustavo Quintero 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 making activated charcoal
    Patent number: 5614459
    Abstract: An improved process is provided for the preparation of activated carbon, which comprises swelling a carbonaceous material in a polar organic solvent containing an activating agent, removing the solvent, carbonizing the material, and removing the activating agent from the product. The activated carbon is produced in a short time with a high yield, and has a high surface area with a very narrow pore size distribution. Both the solvent and activating agents may be recovered and recycled.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 25, 1997
    Assignee: Universidad de Antioquia
    Inventors: Fanor Mondragon, John Fernandez, Alfredo Jaramillo, Gustavo Quintero