Patents by Inventor John W. Mckiernan

John W. Mckiernan 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 recovering precious metals from clay-containing ores
    Patent number: 11111559
    Abstract: A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: September 7, 2021
    Assignee: Ethox Chemicals, LLC
    Inventors: Charles F. Palmer, Jr., John W. McKiernan, Charles F. Palmer, III
  • Process for recovering precious metals from clay-containing ores
    Patent number: 10604821
    Abstract: A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: March 31, 2020
    Assignee: Ethox Chemicals, LLC
    Inventors: Charles F. Palmer, Jr., John W. McKiernan, Charles F. Palmer, III
  • Process for Recovering Precious Metals from Clay-Containing Ores
    Publication number: 20200002783
    Abstract: A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
    Type: Application
    Filed: August 28, 2019
    Publication date: January 2, 2020
    Inventors: Charles F. Palmer, JR., John W. McKiernan, Charles F. Palmer, III
  • Process for Recovering Precious Metals from Clay-Containing Ores
    Publication number: 20180187286
    Abstract: A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
    Type: Application
    Filed: January 5, 2017
    Publication date: July 5, 2018
    Inventors: Charles F. Palmer, JR., John W. Mckiernan, Charles F. Palmer, III