Patents by Inventor Neal W. Johnson

Neal W. Johnson 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).

  • Cooling tower operation with automated pH control and blowdown
    Patent number: 4273146
    Abstract: Cooling tower water is analyzed for pH and electrical conductivity. In response to the pH measurement, acid addition is made periodically (intermittently) so that fluctuations in pH during acid addition are minimized. The conductivity measurement, which relates to salts concentration, controls periodic (intermittent) blowdown of water having high salts concentration so as to minimize waste of water and water additives during blowdown.
    Type: Grant
    Filed: January 5, 1979
    Date of Patent: June 16, 1981
    Assignee: Phillips Petroleum Company
    Inventor: Neal W. Johnson