Patents by Inventor Steven T. Jystad

Steven T. Jystad 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).

  • Publication number: 20240319020
    Abstract: A method of calibrating temperature of a resistive element includes: generating a standard resistance-temperature (R-T) curve for the resistive element in an isothermal condition, wherein the resistive element comprises a material with a Curie temperature; generating an operational R-T curve for the resistive element during a normal operation of the resistive element; shifting the operational R-T curve toward the standard R-T curve at the Curie temperature to generate an adjusted operational R-T curve; and adjusting a measured temperature of the resistive element based on a resistance of the resistive element and the adjusted operational R-T curve.
    Type: Application
    Filed: June 5, 2024
    Publication date: September 26, 2024
    Applicant: WATLOW ELECTRIC MANUFACTURING COMPANY
    Inventors: David P. CULBERTSON, Steven T. JYSTAD, Roger BRUMMELL, Sanhong ZHANG, Jeremy OHSE, Peter KOSS, Austin JOHANNES
  • Patent number: 12031875
    Abstract: A method of calibrating temperature of a resistive element having a material with a Curie temperature includes generating a standard resistance-temperature (R-T) curve for the resistive element in isothermal conditions to identify values of the R-T curve and an inflection point at the Curie temperature, generating operational R-T curves for the resistive element over an operational time period, comparing the standard R-T curve to the operational R-T curves, and adjusting the operational curves to the standard R-T curve at the Curie temperature to calibrate temperature of the resistive element.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: July 9, 2024
    Assignee: Watlow Electric Manufacturing Company
    Inventors: David P. Culbertson, Steven T. Jystad, Roger Brummell, Sanhong Zhang, Jeremy Ohse, Pete Koss, Austin Johannes