Patents by Inventor James E. Broaddus

James E. Broaddus 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).

  • Automatic mixture control apparatus and method
    Patent number: 5027267
    Abstract: An automatic mixture control apparatus includes a micro-computer-based data acquisition and control device which responds in real time to flowmeter and densimeter signals to control water inlet and bulk cement valves so that a cement slurry is produced at the desired rate and density. The data acquisition and control device is programmed to provide means for computing desired positions for the valves and for computing corrections for the positions. A related automatic mixture control method is also disclosed.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: June 25, 1991
    Assignee: Halliburton Company
    Inventors: Alan J. Pitts, Leonard R. Case, James E. Broaddus