Patents by Inventor John C. Thomas, deceased

John C. Thomas, deceased 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 automated de-coking
    Patent number: 4626320
    Abstract: Method for automated hydro-blast de-coking of delayed coke drums wherein programmed central control receives input of drill stem tension, drill bit elevation and drill stem rotation along with indications as to hydraulic hoist power and air pressure input to the drill stem rotary motor, and functions to provide control outputs to automatically control the pilot and main bed cutting procedures attendant an entire drum de-coking operation.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: December 2, 1986
    Assignee: Conoco Inc.
    Inventors: Charles W. Alworth, Ward B. Davis, John C. Thomas, deceased