Patents by Inventor He Nan

He Nan 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).

  • Zwitterionic compounds as gas chromatographic column stationary phases
    Patent number: 12000809
    Abstract: A gas chromatographic (GC) column using a zwitterionic compound and methods of use thereof are disclosed herein. The volatile free acids were observed to strongly retain on these zwitterionic compounds-based columns with excellent peak symmetry. By carefully tuning the structures of these zwitterionic compounds, different selectivity toward volatile free acids was demonstrated. These stationary phases possess a wide working range with thermal stabilities at higher temperatures.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: June 4, 2024
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Jared L. Anderson, Kosuke Kuroda, He Nan
  • ZWITTERIONIC COMPOUNDS AS GAS CHROMATOGRAPHIC COLUMN STATIONARY PHASES
    Publication number: 20220268746
    Abstract: A gas chromatographic (GC) column using a zwitterionic compound and methods of use thereof are disclosed herein. The volatile free acids were observed to strongly retain on these zwitterionic compounds-based columns with excellent peak symmetry. By carefully tuning the structures of these zwitterionic compounds, different selectivity toward volatile free acids was demonstrated. These stationary phases possess a wide working range with thermal stabilities at higher temperatures.
    Type: Application
    Filed: May 9, 2022
    Publication date: August 25, 2022
    Inventors: Jared L. Anderson, Kosuke Kuroda, He Nan
  • Zwitterionic compounds as gas chromatographic column stationary phases
    Patent number: 11353435
    Abstract: A gas chromatographic (GC) column using a zwitterionic compound and methods of use thereof are disclosed herein. The volatile free acids were observed to strongly retain on these zwitterionic compounds-based columns with excellent peak symmetry. By carefully tuning the structures of these zwitterionic compounds, different selectivity toward volatile free acids was demonstrated. These stationary phases possess a wide working range with thermal stabilities at higher temperatures.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 7, 2022
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Jared L. Anderson, Kosuke Kuroda, He Nan
  • ZWITTERIONIC COMPOUNDS AS GAS CHROMATOGRAPHIC COLUMN STATIONARY PHASES
    Publication number: 20190360979
    Abstract: A gas chromatographic (GC) column using a zwitterionic compound and methods of use thereof are disclosed herein. The volatile free acids were observed to strongly retain on these zwitterionic compounds-based columns with excellent peak symmetry. By carefully tuning the structures of these zwitterionic compounds, different selectivity toward volatile free acids was demonstrated. These stationary phases possess a wide working range with thermal stabilities at higher temperatures.
    Type: Application
    Filed: December 21, 2018
    Publication date: November 28, 2019
    Inventors: Jared L. Anderson, Kosuke Kuroda, He Nan