Patents by Inventor George M. Butler

George M. Butler 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).

  • Control system for sheetmaking
    Patent number: 5121332
    Abstract: A time delay compensation control system for use in controlling a sheetmaking process includes a controller operated according to the Smith Predictor control scheme and means to automatically adjust the closed-loop time constant of the controller in inverse relationship to the system error or to the signal-to-noise ratio of the system output signals.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: June 9, 1992
    Assignee: Measurex Corporation
    Inventors: Ramesh Balakrishnan, George M. Butler