Patents by Inventor Wenfei XU

Wenfei XU 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).

  • Ferromagnetic harmonic elimination method for active matched resistance voltage transformer based on PID adjustment
    Patent number: 11973337
    Abstract: This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors.
    Type: Grant
    Filed: August 17, 2023
    Date of Patent: April 30, 2024
    Assignee: Qujing Power Supply Bureau of Yunnan Power Grid Co., Ltd
    Inventors: Xiaohong Zhu, Lianjing Yang, Fei Mao, Rong Zhang, Yang Yang, Jiangyun Su, Wenfei Feng, Zhe Li, Pengjin Qiu, Jianbin Li, Zhikun Hong, Weirong Yang, Changjiu Zhou, Yingqiong Zhang, Rui Xu, Guibing Duan
  • FERROMAGNETIC HARMONIC ELIMINATION METHOD FOR ACTIVE MATCHED RESISTANCE VOLTAGE TRANSFORMER BASED ON PID ADJUSTMENT
    Publication number: 20240072531
    Abstract: This invention relates to the technical field of harmonic elimination for ferromagnetic resonance for a voltage transformer (abbreviated as PT), in particular, to a harmonic elimination method for ferromagnetic resonance for an active resistance-matching voltage transformer based on PID-adjustment, including compiling a resistance matching algorithm; designing and building a harmonic elimination control system based on the PID control strategy; presetting an active resistance-matching strategy; designing an engineering scheme for placing resistors.
    Type: Application
    Filed: August 17, 2023
    Publication date: February 29, 2024
    Inventors: Xiaohong ZHU, Lianjing YANG, Fei MAO, Rong ZHANG, Yang YANG, Jiangyun SU, Wenfei FENG, Zhe LI, Pengjin QIU, Jianbin LI, Zhikun HONG, Weirong YANG, Changjiu ZHOU, Yingqiong ZHANG, Rui XU, Guibing DUAN
  • Gene detection method, gene detection kit and gene detection device
    Patent number: 11578361
    Abstract: A gene detection method, a gene detection kit, and a gene detection device, including the following steps: providing a plurality of separation cavities on a kit, using a plunger to separate adjacent separation cavities, and respectively providing a lysate solution, a washing solution and a reaction solution in the separation cavities; when detecting a sample, pushing each plunger to align a plunger hole of the plunger with the separation cavity, thereby making the separation cavities interconnected; then, controlling magnetic beads in the kit to drive the sample to be tested to pass through the separation cavities in sequence by an electromagnetic control method, carrying out a lysing, a washing and a reaction in sequence; and finally, performing a optical detection on a gene in the reaction solution from outside.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: February 14, 2023
    Assignee: HANGZHOU LIFEREAL BIOTECHNOLOGY CO., LTD.
    Inventors: Qian Song, Wenfei Xu, Xin Wang, Xiangzhao Zheng
  • GENE DETECTION METHOD, GENE DETECTION KIT AND GENE DETECTION DEVICE
    Publication number: 20190376121
    Abstract: A gene detection method, a gene detection kit, and a gene detection device, including the following steps: providing a plurality of separation cavities on a kit, using a plunger to separate adjacent separation cavities, and respectively providing a lysate solution, a washing solution and a reaction solution in the separation cavities; when detecting a sample, pushing each plunger to align a plunger hole of the plunger with the separation cavity, thereby making the separation cavities interconnected; then, controlling magnetic beads in the kit to drive the sample to be tested to pass through the separation cavities in sequence by an electromagnetic control method, carrying out a lysing, a washing and a reaction in sequence; and finally, performing a optical detection on a gene in the reaction solution from outside.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Applicant: HANGZHOU LIFEREAL BIOTECHNOLOGY CO., LTD.
    Inventors: Qian SONG, Wenfei XU, Xin WANG, Xiangzhao ZHENG