Patents by Inventor John K Burchtorf

John K Burchtorf 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: 11879163
    Abstract: A method for determining the lignin or lignin by-product content of a process stream includes measuring the fluorescence parameter of a fluorescence spectra of the process stream, comparing the measured fluorescence parameter with predetermined a fluorescence parameter of lignin or lignin by-product reference samples, determining the amount of lignin or lignin by-product based on the comparison with the reference samples. Lignin or lignin by-products can then be removed from a process stream by adding a sufficient amount of a compound suitable for precipitating the lignin or lignin by-product to the process stream, and removing the precipitated lignin or lignin by-product from the process stream.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: January 23, 2024
    Assignee: CHEMTREAT, INC
    Inventors: John K Burchtorf, Megan Pettygrove, William H Henderson
  • Publication number: 20200172988
    Abstract: A method for determining the lignin or lignin by-product content of a process stream includes measuring the fluorescence parameter of a fluorescence spectra of the process stream, comparing the measured fluorescence parameter with predetermined a fluorescence parameter of lignin or lignin by-product reference samples, determining the amount of lignin or lignin by-product based on the comparison with the reference samples. Lignin or lignin by-products can then be removed from a process stream by adding a sufficient amount of a compound suitable for precipitating the lignin or lignin by-product to the process stream, and removing the precipitated lignin or lignin by-product from the process stream.
    Type: Application
    Filed: June 14, 2018
    Publication date: June 4, 2020
    Inventors: John K Burchtorf, Megan PETTYGROVE, William H HENDERSON