Patents by Inventor Thomas R. Fredriksen

Thomas R. Fredriksen 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).

  • Detection and analysis of olefins in petroleum by electrospray ionization mass spectrometry
    Patent number: 11821868
    Abstract: A method for detecting and analyzing olefins in petroleum by electrospray ionization mass spectrometry can include obtaining a hydrocarbon sample comprising at least about 90 wt % of saturate compounds; producing a solution comprising the hydrocarbon sample and a metal salt, the metal salt comprising a metal ion; forming olefin-metal ion complexes by electrospray ionization; and detecting the olefin-metal ion complexes using mass spectrometry.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: November 21, 2023
    Assignee: ExxonMobil Technology and Engineering Company
    Inventors: Ashley M. Wittrig, Kuangnan Qian, Thomas R. Fredriksen
  • DETECTION AND ANALYSIS OF OLEFINS IN PETROLEUM BY ELECTROSPRAY IONIZATION MASS SPECTROMETRY
    Publication number: 20210302371
    Abstract: A method for detecting and analyzing olefins in petroleum by electrospray ionization mass spectrometry can include obtaining a hydrocarbon sample comprising at least about 90 wt % of saturate compounds; producing a solution comprising the hydrocarbon sample and a metal salt, the metal salt comprising a metal ion; forming olefin-metal ion complexes by electrospray ionization; and detecting the olefin-metal ion complexes using mass spectrometry.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Inventors: Ashley M. Wittrig, Kuangnan Qian, Thomas R. Fredriksen