Patents by Inventor Kerry A. McDonald

Kerry A. McDonald 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 extracting zinc lead and silver from brines
    Patent number: 5244491
    Abstract: The present invention provides a novel method of extracting zinc from geothermal brines and synthetic brines which can be performed in a continuous, in-line process.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: September 14, 1993
    Assignee: Cyprus Power Company
    Inventors: Patrick M. Brown, Jerry Dobson, Kerry A. McDonald