Patents Represented by Attorney Frederick McCarthy

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  • Statistical process control for air separation process
    Patent number: 5257206
    Abstract: Statistical process control system for an air-separation plant using off-line and on-line computer means to define control chart limits, trend thresholds and dynamic models for use with on-line process variable data for determination of statistical process control.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 26, 1993
    Assignee: Praxair Technology, Inc.
    Inventor: Thomas C. Hanson