Patents by Inventor C. Stuart Daw

C. Stuart Daw 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).

  • Patent number: 7846736
    Abstract: In some embodiments, a method of monitoring a resin-producing polymerization reaction in a fluid bed reactor system to generate reaction parameter data in on-line fashion, determining an indicator of at least one of entropy and complexity (for example, Kolmogorov or Shannon entropy) of each of at least two subsets of the reaction parameter data, and optionally also determining from at least one value of the indicator (for example, from a time series of Kolmogorov or Shannon entropy values) an indication of at least one of degree of resin stickiness, an approach to or imminence of resin stickiness, and an approach to or imminence of an unsafe or undesired reactor operating condition (e.g., that can result in sheeting or chunking). Optionally also, the reaction is controlled in response to at least one value of the indicator, for example, in an effort to prevent the occurrence of sheeting or another discontinuity event or to maintain the reactor in a stable, non-sticking condition.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: December 7, 2010
    Assignee: Univation Technologies, LLC
    Inventors: Michael E. Muhle, Ke Nguyen, Charles E. A. Finney, C. Stuart Daw
  • Patent number: 7484955
    Abstract: Methods for cyclone boiler flame diagnostics and control, including methods for monitoring the operating state of a cyclone furnace using linear and nonlinear signal analysis techniques, including temporal irreversibility and symbol sequence. Adjustments may be made in the air flow distribution to optimize performance. Signals for the main flame and lighter scanners are relatively independent, thereby allowing for independent control of the primary air flow to the burner and secondary air flow to the barrel.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: February 3, 2009
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Thomas J. Flynn, Ralph T. Bailey, Timothy A. Fuller, Charles E. A. Finney, C. Stuart Daw
  • Publication number: 20080050684
    Abstract: Methods for cyclone boiler flame diagnostics and control, including methods for monitoring the operating state of a cyclone furnace using linear and nonlinear signal analysis techniques, including temporal irreversibility and symbol sequence. Adjustments may be made in the air flow distribution to optimize performance. Signals for the main flame and lighter scanners are relatively independent, thereby allowing for independent control of the primary air flow to the burner and secondary air flow to the barrel.
    Type: Application
    Filed: October 4, 2006
    Publication date: February 28, 2008
    Inventors: Thomas J. Flynn, Ralph T. Bailey, Timothy A. Fuller, Charles E.A. Finney, C. Stuart Daw
  • Patent number: 5857978
    Abstract: Methods and apparatus for automatically predicting epileptic seizures monitor and analyze brain wave (EEG or MEG) signals. Steps include: acquiring the brain wave data from the patient; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis tools; obtaining time serial trends in the nonlinear measures; comparison of the trend to known seizure predictors; and providing notification that a seizure is forthcoming.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: January 12, 1999
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: Lee M. Hively, Ned E. Clapp, C. Stuart Daw, William F. Lawkins
  • Patent number: 5743860
    Abstract: Methods and apparatus for automatically detecting epileptic seizures by monitoring and analyzing brain wave (EEG or MEG) signals. Steps include: acquiring the brain wave data from the patient; digitizing the data; obtaining nonlinear measures of the data via chaotic time series analysis; obtaining time serial trends in the nonlinear measures; determining that one or more trends in the nonlinear measures indicate a seizure, and providing notification of seizure occurrence.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: April 28, 1998
    Assignee: Lockheed Martin Energy Systems, Inc.
    Inventors: Lee M. Hively, Ned E. Clapp, C. Stuart Daw, William F. Lawkins
  • Patent number: 5435972
    Abstract: A control loop and fluidization quality analyzer for a fluidized bed utilizes time varying pressure drop measurements. A fast-response pressure transducer measures the overall bed pressure drop, or over some segment of the bed, and the pressure drop signal is processed to produce an output voltage which changes with the degree of fluidization turbulence.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: July 25, 1995
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: C. Stuart Daw, James A. Hawk