Patents by Inventor Travis BJERKETVEDT

Travis BJERKETVEDT 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).

  • Monitoring and controlling hydrophobic components in a pulp process
    Patent number: 12044607
    Abstract: A sample of an aqueous stream is conducted to an optical measurement device. A hydrophobic dye is added. The sample is fractionated into fractions according to particle size or mass. Fluorescence intensity values and light scattering intensity values for the fractions are measured. Fluorescence intensity values of the fractions are added together thus obtaining a sum of the fluorescence intensity values. Light scattering intensity values of the fractions are added together, thus obtaining a sum of the light scattering intensity values. A hydro-phobicity density of the particles in the sample, is calculated by dividing the sum of the fluorescence intensity values with the sum of the light scattering intensity values. A concentration of hydrophobic contaminants in the aqueous stream is monitored and controlled based on the calculated hydrophobicity density of the particles in the sample.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: July 23, 2024
    Assignee: KEMIRA OYJ
    Inventors: Iiris Joensuu, Marjatta Piironen, Andy Bergeron, Travis Bjerketvedt
  • MONITORING AND CONTROLLING HYDROPHOBIC COMPONENTS IN A PULP PROCESS
    Publication number: 20220146396
    Abstract: A sample of an aqueous stream is conducted to an optical measurement device. A hydrophobic dye is added. The sample is fractionated into fractions according to particle size or mass. The fluorescence intensity values and light scattering intensity values for the fractions are measured. The fluorescence intensity values of the fractions are added together thus obtaining a sum of the fluorescence intensity values. The light scattering intensity values of the fractions are added together, thus obtaining a sum of the light scattering intensity values. A hydrophobicity density of the particles in the sample, is calculated by dividing the sum of the fluorescence intensity values with the sum of the light scattering intensity values, and the concentration of hydrophobic contaminants in the aqueous stream is monitored and controlled based on the calculated hydrophobicity density of the particles in the sample.
    Type: Application
    Filed: December 20, 2019
    Publication date: May 12, 2022
    Applicant: KEMIRA OYJ
    Inventors: Iiris JOENSUU, Marjatta PIIRONEN, Andy BERGERON, Travis BJERKETVEDT