Patents by Inventor Liguo Liu

Liguo 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).

  • Publication number: 20240196157
    Abstract: Disclosed are a pass-through method, apparatus and system for wireless earphones and a computer-readable storage medium, which are applied to an earphone in wireless earphones, and the earphone is provided with a main microphone and a feedforward microphone. The method includes: acquiring a first main sound signal and a first feedforward sound signal respectively picked up by the main and feedforward microphones; receiving second main and feedforward sound signals sent by the other earphone, the second main and feedforward sound signals being picked up by main and feedforward microphones disposed on the other earphone; obtaining orientation information of a sound source relative to a wearer of the earphones according to the first main and feedforward sound signals, and the second main and feedforward sound signals; and controlling speakers of the wireless earphones to play a sound having a corresponding sound effect according to the orientation information.
    Type: Application
    Filed: September 28, 2021
    Publication date: June 13, 2024
    Inventors: Liguo LIU, Fenqing WANG
  • Patent number: 11988655
    Abstract: A combined platform for testing fireproof materials for cables includes a main frame for providing operating space; an air circulation system including a fresh air supply unit for supplying fresh air into the operating space and an exhaust gas treatment unit for treating the gas in the operating space under set conditions; an open flame system for providing an open flame for testing cables; a water circulation system for supplying water at least to the exhaust gas treatment unit and the operating space; and a control system for collecting at least the temperature and gas concentration in the operating space, and performing process control based on the collected results. The actual working conditions of scenarios such as fire-resistant cable tunnels and fire-resistant cable trenches can be simulated, and multiple tests such as combustion performance test and physical and chemical performance test can be carried out under various working conditions.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: May 21, 2024
    Assignee: STATE GRID JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTE
    Inventors: Chenying Li, Jie Chen, Xiao Tan, Yijun Fei, Wei Zhang, Jingying Cao, Yang Liu, Qiang Wu, Jinggang Yang, Qiang Huang, Rong Sun, Jian Liu, Hongze Li, Liguo Liu
  • Publication number: 20230322098
    Abstract: Disclosed is an electrical topology of an integrated DC charging station and an operation control method. The electrical topology comprises a supply side DC bus, K discrete charging pile units and a mutual aid total DC bus; each charging pile unit comprises an input DC bus, a mutual aid sub-DC bus, an output DC bus, N isolation branches, a non-isolation DC/DC module and an output terminal, the input DC bus is connected to the supply side DC bus, and the mutual aid sub-DC bus of each charging pile unit is connected to the mutual aid total DC bus; the isolation branch comprises an output branch and a mutual aid branch; and when all the output branches of one charging pile, unit are started and the output power cannot meet the required power, the mutual aid branches of other charging pile units are started to meet the required power.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 12, 2023
    Applicants: STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE, JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
    Inventors: Tiankui SUN, Mingming SHI, Xiaolong XIAO, Jinggang YANG, Liguo LIU, Qifeng HUANG, Shuyi ZHUANG, Wei SU, Lei GAO, Yubo YUAN, Xiaodong YUAN, Jian LIU, Shu CHEN
  • Publication number: 20230250214
    Abstract: The invention relates to a polyurethane composition for preparing composites, a polyurethane composite obtained by the preparation and a method for preparing the polyurethane composite. The polyurethane composition comprises: a) an isocyanate component; b) an isocyanate-reactive component; c) a radical reaction initiator and d) an organometallic catalyst; wherein the hydroxyl value of the component b) isocyanate-reactive component is 200 mgKOH/g to 700 mgKOH/g, and the molar ratio of isocyanate groups to hydroxyl groups of the composition is 0.6 to 1.5. The polyurethane composition of the present invention has the advantages of long pot life and simple operation process. The polyurethane composite comprising the polyurethane resin matrix prepared by the polyurethane composition of the present invention has both excellent weather resistance and mechanical strength.
    Type: Application
    Filed: June 25, 2021
    Publication date: August 10, 2023
    Inventors: Yan Deng, Ruqi Chen, Liguo Liu, Jingmei Liu
  • Publication number: 20230044933
    Abstract: A combined platform for testing fireproof materials for cables includes a main frame for providing operating space; an air circulation system including a fresh air supply unit for supplying fresh air into the operating space and an exhaust gas treatment unit for treating the gas in the operating space under set conditions; an open flame system for providing an open flame for testing cables; a water circulation system for supplying water at least to the exhaust gas treatment unit and the operating space; and a control system for collecting at least the temperature and gas concentration in the operating space, and performing process control based on the collected results. The actual working conditions of scenarios such as fire-resistant cable tunnels and fire-resistant cable trenches can be simulated, and multiple tests such as combustion performance test and physical and chemical performance test can be carried out under various working conditions.
    Type: Application
    Filed: May 19, 2021
    Publication date: February 9, 2023
    Inventors: Chenying LI, Jie CHEN, Xiao TAN, Yijun FEI, Wei ZHANG, Jingying CAO, Yang LIU, Qiang WU, Jinggang YANG, Qiang HUANG, Rong SUN, Jian LIU, Hongze LI, Liguo LIU
  • Patent number: 11149341
    Abstract: A mask plate and manufacturing method thereof, a mask assembly and a vapor deposition apparatus are provided. The mask plate includes a mask pattern region, and a peripheral region of the mask pattern region, the peripheral region including a recess structure, and a recess direction of the recess structure being parallel to a thickness direction of the mask plate. When the glass substrate is superposed on the mask plate, the force suffered by the glass substrate at the weld pad is reduced, and the probability of scratching the glass substrate is lowered.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 19, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Xinjian Zhang, Liguo Liu, Zhi Yin
  • Publication number: 20190203334
    Abstract: A mask plate and manufacturing method thereof, a mask assembly and a vapor deposition apparatus are provided. The mask plate includes a mask pattern region, and a peripheral region of the mask pattern region, the peripheral region including a recess structure, and a recess direction of the recess structure being parallel to a thickness direction of the mask plate. When the glass substrate is superposed on the mask plate, the force suffered by the glass substrate at the weld pad is reduced, and the probability of scratching the glass substrate is lowered.
    Type: Application
    Filed: July 24, 2018
    Publication date: July 4, 2019
    Inventors: Xinjian Zhang, Liguo Liu, Zhi Yin