Patents by Inventor Jiayan Nie

Jiayan Nie 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).

  • Method of randomly generating three-dimensional profiles of railway ballast particles
    Patent number: 12437126
    Abstract: Provided is a method of reconstructing and randomly generating three-dimensional profiles of railway ballast particles. The method focuses on two aspects of accurate characterization and random generation of the railway ballast profiles. The method specifically includes: first, obtaining a lot of railway ballast profile samples to form a railway ballast library, and describing the uncertainty of the railway ballasts as much as possible; introducing a spherical harmonic function method into the three-dimensional profile characterization of railway ballast particles in order to accurately reconstruct the railway ballast particle profiles; and finally, establishing a joint probability density function of a spherical harmonic function spectrum to randomly generate railway ballast particles.
    Type: Grant
    Filed: February 6, 2025
    Date of Patent: October 7, 2025
    Assignee: Southwest Jiaotong University
    Inventors: Rong Chen, Kai Liu, Ping Wang, Jianxing Liu, Zijun Cao, Jiayan Nie, Xuetong Wang, Hui Peng, Min Xue, Yiling Liu