Patents by Inventor Keith E. Weatherford

Keith E. Weatherford 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).

  • Using wavelet decomposition to determine the fluidization quality in a fluidized bed reactor
    Patent number: 9452403
    Abstract: A method and apparatus for determining the fluidization quality of a fluidized bed reactor is disclosed. The method includes measuring pressure within the fluidized bed reactor to obtain a pressure signal. The pressure signal is then transformed using wavelet decomposition into higher-frequency details and lower-frequency approximations. The dominance of the various features is then calculated based on the energy of each feature in relation to the normalized wavelet energies. The fluidization quality of the fluidized bed reactor is then determined from a comparison over time of the calculated energies.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: September 27, 2016
    Assignee: SunEdison, Inc.
    Inventors: Jia Wei Chew, Satish Bhusarapu, Keith E. Weatherford
  • Using Wavelet Decomposition To Determine the Fluidization Quality In a Fluidized Bed Reactor
    Publication number: 20140112831
    Abstract: A method and apparatus for determining the fluidization quality of a fluidized bed reactor is disclosed. The method includes measuring pressure within the fluidized bed reactor to obtain a pressure signal. The pressure signal is then transformed using wavelet decomposition into higher-frequency details and lower-frequency approximations. The dominance of the various features is then calculated based on the energy of each feature in relation to the normalized wavelet energies. The fluidization quality of the fluidized bed reactor is then determined from a comparison over time of the calculated energies.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: MEMC ELECTRONIC MATERIALS, INC.
    Inventors: Jia Wei Chew, Satish Bhusarapu, Keith E. Weatherford