Patents by Inventor Jiangfan Liu

Jiangfan Liu 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 FOR SEPARATING LORAN SKY AND GROUND WAVES BASED ON LEVENBERG-MARQUART ALGORITHM
    Publication number: 20220317228
    Abstract: Provided herein is a method for separating Loran sky and ground waves based on a Levenberg-Marquart algorithm, including: (1) collecting a plurality of Loran sky-ground wave signals followed by normalization to obtain a normalized signal; (2) preprocessing the normalized signal by inverse Fourier transform method to obtain an initialization parameter; (3) establishing a mathematical model for the Loran sky-ground wave signals in time domain; and (4) solving parameters of the mathematical model using the Levenberg-Marquart algorithm to separate the Loran sky and ground waves.
    Type: Application
    Filed: June 16, 2022
    Publication date: October 6, 2022
    Inventors: Xiaoli XI, Zhenzhu ZHAO, Jiangfan LIU, Jinsheng ZHANG, Yanning YUAN, Jiuxiang GAO, Chaofan TUO
  • Electric dental cleaner
    Patent number: D865177
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 29, 2019
    Assignee: YJK Technology (Shenzhen) Co., limited
    Inventor: Jiangfan Liu
  • Muscle massage knife
    Patent number: D895131
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: September 1, 2020
    Assignee: YJK TECHNOLOGY (SHENZHEN) CO., LIMITED
    Inventor: Jiangfan Liu