Patents by Inventor Robert C. Ezzell

Robert C. Ezzell 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 for cleaning heat exchangers
    Patent number: 4577677
    Abstract: A method of operating a heat exchange system of the type adapted to receive a hot fluid and a cool fluid therethrough accomplishes cleaning of the system by terminating cool fluid flow to a portion of the system. Both fluids are passed through the entire system for a period of time. Flow of the cool fluid is then terminated to a portion of the system while continuous flow of the hot fluid is maintained through the entire system. Thus, the operating temperature of the entire system is increased so as to melt wax and other deposits on surfaces in the system.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: March 25, 1986
    Assignee: Phillips Petroleum Company
    Inventor: Robert C. Ezzell