Patents by Inventor Tamara Butler Johndrow

Tamara Butler Johndrow 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).

  • SYSTEM AND METHOD FOR IMPROVED LEACH STOCKPILE DRAINAGE
    Publication number: 20150167117
    Abstract: Systems and methods for improving leach solution drainage in a stockpile leach operation are provided. In various embodiments, methods are provided comprising placement of a drainage measure or a system of drainage measures in a leach stockpile to improve leach solution flow through the stockpile. A system for recovery of metal values from a leach stockpile comprising a leach stockpile, a leach solution, a leach solution delivery system, a leach solution drainage system, and a leach solution recovery system are also provided.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 18, 2015
    Applicant: FREEPORT-MCMORAN CORPORATION
    Inventors: Martin Brueggemann, Paul Richard Cook, Tamara Butler Johndrow, Yi Zhu, Larry Robert Todd
  • Apparatus and method for covering a surface of a body of water to inhibit evaporation
    Patent number: 8029208
    Abstract: A cover structure for covering a portion of a surface of a body of water includes a first plate having a brim, a second plate having a brim, the second plate overlying and spaced apart from the first plate, a support structure coupling the first plate to the second plate, and the cover structure having a specific gravity for maintaining the first plate in a position covering a portion of the surface of a body of water, and maintaining the second plate below the portion of the surface of the body of water.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 4, 2011
    Assignee: Freeport-McMoRan Copper & Gold Inc.
    Inventors: Darin Michael Lee, Ari Gabriel Partanen, Tamara Butler Johndrow, Timothy George Robinson, William Arthur Ebert, Eric William Ebert, Todd Jason Ebert