Patents by Inventor Yanfei Xu

Yanfei 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).

  • Patent number: 12119644
    Abstract: A method for controlling a photovoltaic rapid shutdown system, an inverting system, and a photovoltaic rapid shutdown system. In the photovoltaic rapid shutdown system, the inverting system determines whether the photovoltaic rapid shutdown system is to enter a safe mode, introduces fluctuations onto a direct-current bus in the photovoltaic rapid shutdown system in response to the photovoltaic rapid shutdown system being not to enter the safe mode, and otherwise does not introduce the fluctuations onto the direct-current bus. A shutdown device for a photovoltaic module determines according to an output parameter thereof whether an electrical parameter on the direct-current bus connected to the shutdown device meets a preset condition, controls itself to be turned on or maintains itself being on in response to the electrical parameter meeting the preset condition, and otherwise controls itself to be turned off or maintains itself being off.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: October 15, 2024
    Assignee: Sungrow Power Supply Co., Ltd.
    Inventors: Yu Yang, Yanfei Yu, Jun Xu, Qiaodi Chen
  • Publication number: 20240328108
    Abstract: A method for constructing a fixed monitoring pile for a mining area with a high phreatic water level includes: S1: prefabricating a pile foundation body, where the pile foundation body has a columnar structure, and a plurality of extension connection ports are provided at an outer side and a bottom of the pile foundation body; and S2: digging a foundation pit at a designated monitoring point; combining the pile foundation body with an extension body to form a fixed monitoring pile; placing the fixed monitoring pile into the foundation pit, such that a bottom extension body and a side extension body are inserted into the pit foundation; and backfilling and compacting. The method increases the affinity between the fixed monitoring pile and a loose layer and strengthens the fixed monitoring pile to prevent it from loosening, thereby improving measurement accuracy.
    Type: Application
    Filed: April 16, 2024
    Publication date: October 3, 2024
    Applicants: PING AN COAL MINING ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD, HUAINAN MINING (GROUP) CO., LTD
    Inventors: Hao LI, Shikai AN, Biwu HAN, Hongxing GUO, Yanfei XU, Yunfei YU, Qingfa LIAO, Derong ZHAO, Wei MIAO
  • Patent number: 12096862
    Abstract: Disclosed is a fastening structure for a seating foam, comprising a foam and a reinforcement fabric, and characterized in that the fastening structure is directly provided at a reinforcement fabric at a location corresponding to a fastening position, and is connected to the reinforcement fabric. The fastening structure of the present invention simultaneously meets two functional requirements of a foam, namely reinforcement of a side B of the foam and fastening of an exterior side A of the foam. The novel fastening structure of the present invention saves space, is thin and light, enhances the strength of the foam against a pull-out force, and optimizes a foam production process.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: September 24, 2024
    Assignee: Yanfeng International Automotive Technology Co., Ltd.
    Inventors: Yanfei Liu, Wei Xu, Ren Tang, Wenhui Ma
  • Patent number: 12087377
    Abstract: In an anti-fuse programming control circuit based on a master-slave charge pump structure, a master charge pump module obtains an external voltage and is connected to a plurality of slave charge pump modules. Each slave charge pump module is connected to an anti-fuse bank. The distance between the layout position of each slave charge pump module and the layout position of the connected anti-fuse bank does not exceed a predetermined distance. Based on a programming voltage output by each slave charge pump module to the connected anti-fuse bank, the feedback network outputs a feedback signal corresponding to the slave charge pump module to the master charge pump module. Based on the feedback signal corresponding to each slave charge pump module, the master charge pump module adjusts a master drive signal provided to the slave charge pump module to stabilize the programming voltage output by the slave charge pump module.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: September 10, 2024
    Assignee: WUXI ESIONTECH CO., LTD.
    Inventors: Zhengzhou Cao, Yueer Shan, Yanfei Zhang, Yan Jiang, Yuting Xu, Hui Xu
  • Publication number: 20240256746
    Abstract: A scheduling method and system for the operation of reservoirs to recharge freshwater for repelling saltwater intrusion under changing conditions. Research data of a research area is collected, the research area is generalized, and the river network topology of the area is constructed; the research data acquire the seawater flow data of each station in the research area for N time periods, analyze the correlation between the flow of a predetermined station and the saltwater intrusion and build a seawater flow spatial-temporal evolution model; rainfall data and freshwater runoff of each station are acquired to analyze the variation trends of freshwater flow and hydrological regime of each station and a first ending point and build a freshwater flow spatial-temporal evolution model; and a scheduling model for recharging freshwater for repelling saltwater intrusion is built for simulation, a scheduling method is provided, and a scheduling scheme set is formed.
    Type: Application
    Filed: April 9, 2024
    Publication date: August 1, 2024
    Inventors: Baofei FENG, Yubin CHEN, Yurong LI, Ming ZENG, Xiao ZHANG, Yuni XU, Wenjing NIU, Yanfei YANG, Yifei TIAN, Tao ZHANG, Yinshan XU, Hui QIU, Jing ZHANG, Fang CHEN, Wenhui XING
  • Patent number: 12044531
    Abstract: A level instrument for surveying a mining subsidence zone in a coal mining area includes a bottom plate, a leveling mechanism, a lifting mechanism, and a level instrument body, where the leveling mechanism is provided on the bottom plate, the lifting mechanism is provided on the leveling mechanism, and the level instrument body is provided on the lifting mechanism. A surveying method using the level instrument is further provided. The level instrument is placed at a surveying location through the bottom plate, a levelness of the level instrument body is directly adjusted through the leveling mechanism below the level instrument body, and a height of the level instrument body is directly adjusted through the lifting mechanism. In this way, the operation process of the level instrument is simplified, and the overall surveying efficiency is improved.
    Type: Grant
    Filed: April 12, 2024
    Date of Patent: July 23, 2024
    Assignee: PING AN COAL MINING ENGINEERING TEC
    Inventors: Bo Xue, Shikai An, Yanfei Xu, Haiyan Cheng, Yanqing Li, Wei Miao, Derong Zhao, Hao Li, Hongxing Guo, Qingfa Liao
  • Publication number: 20220256819
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Application
    Filed: February 25, 2022
    Publication date: August 18, 2022
    Applicant: National University of Singapore
    Inventors: Zhiyuan GONG, Jiangyan HE, Bensheng JU, Toong Jin LAM, Yanfei XU, Tie YAN
  • Patent number: 11259509
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: March 1, 2022
    Assignee: National University of Singapore
    Inventors: Zhiyuan Gong, Jiangyan He, Bensheng Ju, Toong Jin Lam, Yanfei Xu, Tie Yan
  • Patent number: 10427345
    Abstract: Process for continuous fabrication of highly aligned polymer films. A polymer-solvent solution is subjected to a high shear, high temperature, Couette flow to extrude a thin film having polymer chain disentanglement. The extruded thin film is frozen and the solvent is allowed to evaporate to form a dried film. The dried film is mechanically drawn using a constant force, adaptive-thickness drawing system to align polymer molecular chains through plastic deformation. A suitable polymer is ultra-high molecular weight polyethylene.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: October 1, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Gang Chen, Jianjian Wang, Jonathan Kien-Kwok Tong, Hadi Ghasemi, Xiaopeng Huang, James Loomis, Yanfei Xu
  • Publication number: 20190241785
    Abstract: Disclosed are thermally conductive quinoid-type conjugated polymer thin films. One such film comprises conjugated poly(3-hexylthiophene) (P3HT). The thin films can be fabricated using oxidative chemical vapor deposition (oCVD), which offers unique advantages for integrating polymer films into various devices. By avoiding the use of solvents in the deposition of monomers and oxidants and undesirable solvent-derived surface-tension driven effects, such as dewetting, the oCVD coatings can conformally coat complex geometries, can be scaled to large areas, and can be fabricated at relatively low substrate temperatures on electrically insulating substrates. Disclosed is the formation of ordered polymer structures with rigid backbones achieved by oCVD with stacking in the transverse direction via ?-? interactions. P3HT films with record-high thermal conductivity of 2.2 W/m-K near room temperature have been prepared.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 8, 2019
    Inventors: Gang Chen, Karen K. Gleason, Yanfei Xu, Xiaoxue Wang
  • Patent number: 9951446
    Abstract: Infrared-transparent visible-opaque fabrics for wearable personal thermal management.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: April 24, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Gang Chen, Jonathan K. Tong, Svetlana Boriskina, Xiaopeng Huang, James Loomis, Yanfei Xu
  • Publication number: 20180064074
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Application
    Filed: August 11, 2017
    Publication date: March 8, 2018
    Applicant: National University of Singapore
    Inventors: Zhiyuan GONG, Jiangyan HE, Bensheng JU, Toong Jin LAM, Yanfei XU, Tie YAN
  • Publication number: 20180030626
    Abstract: The present invention is directed to infrared-transparent visible-opaque fabrics for wearable personal thermal management.
    Type: Application
    Filed: March 16, 2017
    Publication date: February 1, 2018
    Inventors: Gang Chen, Jonathan K. Tong, Svetlana Boriskina, Xiaopeng Huang, James Loomis, Yanfei Xu
  • Patent number: 9763430
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: September 19, 2017
    Assignee: National University of Singapore
    Inventors: Zhiyuan Gong, Jiangyan He, Bensheng Ju, Toong Jin Lam, Yanfei Xu, Tie Yan
  • Publication number: 20150321408
    Abstract: Process for continuous fabrication of highly aligned polymer films. A polymer-solvent solution is subjected to a high shear, high temperature, Couette flow to extrude a thin film having polymer chain disentanglement. The extruded thin film is frozen and the solvent is allowed to evaporate to form a dried film. The dried film is mechanically drawn using a constant force, adaptive-thickness drawing system to align polymer molecular chains through plastic deformation. A suitable polymer is ultra-high molecular weight polyethylene.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 12, 2015
    Inventors: Gang Chen, Jianjian Wang, Jonathan Kien-Kwok Tong, Hadi Ghasemi, Xiaopeng Huang, James Loomis, Yanfei Xu
  • Publication number: 20150046724
    Abstract: The present disclosure discloses a power supply method and an electronic device, the method is applied to the electronic device, the electronic device comprises M interfaces, and M is an integer which is larger than or equal to 2. The method comprises: obtaining power supply orders corresponding to the M interfaces, when the electronic device being switched from a non-operating state to an operating state; and supplying power to N devices connected to the M interfaces in the power supply orders, wherein N is an integer which is larger than or equal to 1 and less than or equal to M.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 12, 2015
    Applicant: Lenovo (Beijing) Limited
    Inventor: Yanfei Xu
  • Publication number: 20140007265
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 2, 2014
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Zhiyuan GONG, Jiangyan HE, Bensheng JU, Toong Jin LAM, Yanfei XU, Tie YAN
  • Patent number: 8378169
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 19, 2013
    Assignee: National University of Singapore
    Inventors: Zhiyuan Gong, Jiangyan He, Bensheng Ju, Toong Jin Lam, Yanfei Xu, Tie Yan
  • Publication number: 20120167241
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Zhiyuan GONG, Jiangyan HE, Bensheng JU, Toon Jin LAM, Yanfei XU, Tie YAN
  • Patent number: 8153858
    Abstract: Four zebrafish gene promoters, which are skin specific, muscle specific, skeletal muscle specific and ubiquitously expressed respectively, were isolated and ligated to the 5? end of the EGFP gene. When the resulting chimeric gene constructs were introduced into zebrafish, the transgenic zebrafish emit green fluorescence under a blue light or ultraviolet light according to the specificity of the promoters used. Thus, new varieties of ornamental fish of different fluorescence patterns, e.g., skin fluorescence, muscle fluorescence, skeletal muscle-specific and/or ubiquitous fluorescence, are developed.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: April 10, 2012
    Assignee: National University of Singapore
    Inventors: Zhiyuan Gong, Jiangyan He, Bensheng Ju, Toong Jin Lam, Yanfei Xu, Tie Yan