Patents by Inventor Dana W. Pressnall

Dana W. Pressnall 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).

  • Information display system for actively redundant computerized process control
    Patent number: 5491625
    Abstract: In an actively redundant computer system, in which two or more computers simultaneously control a process, live data values representing the actual state of preselected variables are simultaneously displayed along with an alphanumeric representation of a source code statement based on those variables.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: February 13, 1996
    Assignee: The Dow Chemical Company
    Inventors: Dana W. Pressnall, Jeffery T. Polishak, Bradley K. Felix, Michael J. Durisin, Joseph Ellison