Patents by Inventor Qijun Zhang

Qijun Zhang 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: 20250138354
    Abstract: A display frame includes a front frame, a back panel, a middle frame in the front frame, and an elastic pad between the top surface of a side wall of the middle frame facing the front edge and the front edge. The front frame includes a frame structure and a front edge located at one end of the frame structure and extending towards the center of the frame structure. Opposite side walls of the frame structure have a first snap part. The back plate includes a bottom plate and a side plate located on the side edge of the bottom plate and extending towards one side of the bottom plate. The inner surface of the bottom plate is opposite to the inner surface of the front edge. The side plate has a second snap part for fitting with the first snap part.
    Type: Application
    Filed: November 29, 2021
    Publication date: May 1, 2025
    Inventors: Xuefeng DING, Liang LI, Tianma LI, Qijun ZHANG, Dake WANG, Tao XI, Xiaoli LIU, Haohao LI
  • Patent number: 12253711
    Abstract: A backlight module includes a back plate, a backlight component, and a rigid rear shell. The back plate includes a bottom plate and a vertical plate enclosing a mounting space. The backlight component is located in the mounting space and fixedly connected with the back plate. The rigid rear shell covers a side of the back plate away from the backlight component. The rigid rear shell includes a function part, a preset gap exists between the function part and the bottom plate. The bottom plate has a first connecting part including a first screw hole. The function part has a second connecting part including a second screw hole. The first connecting part and the second connecting part are connected through a fixing screw penetrating into the first screw hole and the second screw hole. A first gap exists between the first connecting part and the second connecting part.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: March 18, 2025
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Dake Wang, Tianma Li, Liang Li, Xiaoli Liu, Xuefeng Ding, Qijun Zhang
  • Publication number: 20240389236
    Abstract: A circuit board assembly includes a first circuit board and second circuit board(s). The first circuit board includes first bonding component(s), and a first bonding component includes a plurality of first conductive blocks sequentially arranged at intervals in a first direction. A second circuit board includes second bonding component(s), and a second bonding component includes a plurality of second conductive blocks sequentially arranged at intervals. The plurality of second conductive blocks in the second bonding component are bonded to the plurality of first conductive blocks in the first bonding component in one-to-one correspondence. An expansion ratio of the first circuit board is less than an expansion ratio of the second circuit board. Each second conductive block in the second bonding component overlaps with a first conductive block bonded thereto, and a change ratio of an overlapping state of the second bonding component in the first direction is less than 0.102%.
    Type: Application
    Filed: September 17, 2021
    Publication date: November 21, 2024
    Inventors: Qijun ZHANG, Tianma LI, Liang LI, Bin JI, Xuelian JI, Guohui WANG, Xuefeng DING, Dake WANG
  • Patent number: 12119464
    Abstract: The present invention provides a method for preferentially recovering manganese from waste lithium-rich manganese-based cathode material, the method comprising: step 1) calcination and leaching: mixing the waste lithium-rich manganese-based cathode material with ammonium sulfate and then performing low-temperature calcination, leaching the calcination product with water, and then performing solid-solution separation to obtain a leaching solution; step 2) complexing and manganese separating: adding ammonium sulfite to the leaching solution obtained in step 1) for a complex reaction to obtain manganese-rich residue; step 3) oxidation leaching: adding an oxidant to the manganese-rich residue obtained in step 2) to perform oxidation leaching, and adjusting the pH of the solution to obtain a manganese-rich solution; and step 4) extracting and stripping.
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: October 15, 2024
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Dean Pan, Xiaoguang Zhang, Yifan Wang, Qijun Zhang, Wei Wang
  • Publication number: 20240310573
    Abstract: A backlight module includes a back plate, a backlight component, and a rigid rear shell. The back plate includes a bottom plate and a vertical plate enclosing a mounting space. The backlight component is located in the mounting space and fixedly connected with the back plate. The rigid rear shell covers a side of the back plate away from the backlight component. The rigid rear shell includes a function part, a preset gap exists between the function part and the bottom plate. The bottom plate has a first connecting part including a first screw hole. The function part has a second connecting part including a second screw hole. The first connecting part and the second connecting part are connected through a fixing screw penetrating into the first screw hole and the second screw hole. A first gap exists between the first connecting part and the second connecting part.
    Type: Application
    Filed: April 19, 2022
    Publication date: September 19, 2024
    Inventors: Dake WANG, Tianma LI, Liang LI, Xiaoli LIU, Xuefeng DING, Qijun ZHANG
  • Patent number: 12006268
    Abstract: A method for preparing an ecological foamed ceramic from lepidolite filter mud whole waste belongs to the field of environmental protection and resource reuse. The ecological foamed ceramic with excellent properties can be prepared by using lepidolite filter mud as the main raw materials, including ball milling, homogenization, drying, material distribution, and heat treatment. The amount of lepidolite filter mud in the present invention accounts for more than 90%, which is a whole waste utilization and can achieve high-value utilization of bulk lepidolite filter mud. The present invention uses a composite foaming agent combined with a foaming technology and has the advantages of rapid foaming and controllable pore size compared with a single foaming agent. The ecological foamed ceramic prepared by the present invention meets the industrial standard of CJ/T 299-2008 “Artificial ceramic filter material for water treatment” and has potential application value in domestic sewage treatment.
    Type: Grant
    Filed: November 2, 2023
    Date of Patent: June 11, 2024
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Dean Pan, Xiaoguang Zhang, Ruhao Kong, Qijun Zhang, Zhe Tan, Wei Wang
  • Publication number: 20240170751
    Abstract: The present invention provides a method for preferentially recovering manganese from waste lithium-rich manganese-based cathode material, the method comprising: step 1) calcination and leaching: mixing the waste lithium-rich manganese-based cathode material with ammonium sulfate and then performing low-temperature calcination, leaching the calcination product with water, and then performing solid-solution separation to obtain a leaching solution; step 2) complexing and manganese separating: adding ammonium sulfite to the leaching solution obtained in step 1) for a complex reaction to obtain manganese-rich residue; step 3) oxidation leaching: adding an oxidant to the manganese-rich residue obtained in step 2) to perform oxidation leaching, and adjusting the pH of the solution to obtain a manganese-rich solution; and step 4) extracting and stripping.
    Type: Application
    Filed: November 13, 2023
    Publication date: May 23, 2024
    Applicant: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Dean PAN, Xiaoguang ZHANG, Yifan WANG, Qijun ZHANG, Wei WANG
  • Publication number: 20240125901
    Abstract: A system and method of vibration and audible noise reduction in a LiDAR resonator includes a spring fork mechanism including multiple spring forks. Each spring fork includes two tines. The first tine of a first and second spring fork include a mounted optical module to transmit a light pulse and receive a reflection of the light pulse. The second tine of the first and second spring forks include a mounted counterweight having a mass and center of gravity equal to a mass and center of gravity of the mounted optical module. To reduce or eliminate longitudinal vibrations each tine includes a first section and a second section, the first section attached to the second section by a U-shaped section.
    Type: Application
    Filed: October 12, 2022
    Publication date: April 18, 2024
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qijun Zhang, Mark A. Stebbins, Srinivasa R. Molleti
  • Publication number: 20240059619
    Abstract: A method for preparing an ecological foamed ceramic from lepidolite filter mud whole waste belongs to the field of environmental protection and resource reuse. The ecological foamed ceramic with excellent properties can be prepared by using lepidolite filter mud as the main raw materials, including ball milling, homogenization, drying, material distribution, and heat treatment. The amount of lepidolite filter mud in the present invention accounts for more than 90%, which is a whole waste utilization and can achieve high-value utilization of bulk lepidolite filter mud. The present invention uses a composite foaming agent combined with a foaming technology and has the advantages of rapid foaming and controllable pore size compared with a single foaming agent. The ecological foamed ceramic prepared by the present invention meets the industrial standard of CJ/T 299-2008 “Artificial ceramic filter material for water treatment” and has potential application value in domestic sewage treatment.
    Type: Application
    Filed: November 2, 2023
    Publication date: February 22, 2024
    Applicant: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Dean PAN, Xiaoguang ZHANG, Ruhao KONG, Qijun ZHANG, Zhe TAN, Wei WANG
  • Publication number: 20230400587
    Abstract: A LiDAR resonator with dynamic force equilibrium that includes a spring fork mechanism having a first tine and a second tine with the same stiffness as the first tine, wherein the spring fork mechanism is configured to resonate at a resonant frequency, an optical module, mounted to the first tine, for transmitting a light pulse and receiving a reflection of the light pulse, a voice coil, also mounted to the first tine, for generating an alternating magnetic field at the resonant frequency, a counterweight, mounted to the second tine, having a mass and CG equal to a mass and CG of the combined optical module and the voice coil, and a signal source for coupling an alternating current signal at the resonant frequency to the voice coil such that the voice coil is operative to generate an alternating magnetic force at the resonant frequency between the voice coil and the counterweight.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 14, 2023
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qijun Zhang, Mark A. Stebbins, Srinivasa Rao Molleti
  • Publication number: 20230312445
    Abstract: Disclosed is a device for distillation decolorization and purification of alcohol in maltol production. The device comprises a rectification column, an alkali hydrolysis kettle and an alkali hydrolysis rectification column. An upper outlet of the rectification column is connected to an inlet of the alkali hydrolysis kettle, an outlet of the alkali hydrolysis kettle is connected to an inlet of the alkali hydrolysis rectification column, and an upper outlet of the alkali hydrolysis rectification column is connected to an inlet of a finished product tank. Further disclosed is a method for distillation decolorization and purification of alcohol in maltol production. A product processed by the solution of the present application has a high purity.
    Type: Application
    Filed: June 9, 2023
    Publication date: October 5, 2023
    Inventors: Yuean CHEN, Jian ZHAN, Qijun ZHANG
  • Publication number: 20230286822
    Abstract: The invention relates to a method of separating and extracting rare-earths from rare-earth polishing powder waste and regenerating rare-earth polishing powder, which is characterized by: firstly, process the waste powder with first acid leaching, alkali roasting, and second acid leaching to separate and extract rare-earths from rare-earth polishing powder waste to obtain the leaching solution of rare-earth chloride; secondly, precipitate from the leaching solution with ammonia to remove impurities and hydrochloric acid solution to obtain the purified solution of rare-earth chloride; thirdly, co-precipitate from the solution acquired in the second step with hydrofluoric acid, ammonium bicarbonate, and dispersant to obtain the lanthanum cerium fluoro-carbonate; and finally, after drying, two-stage high-temperature calcination, and ball milling, the regenerated rare-earth polishing powder with decent polishing performance can be obtained.
    Type: Application
    Filed: April 26, 2023
    Publication date: September 14, 2023
    Inventors: Yufeng Wu, Minwei Song, Qijun Zhang
  • Patent number: 11753308
    Abstract: The invention relates to a method of separating and extracting rare-earths from rare-earth polishing powder waste and regenerating rare-earth polishing powder, which is characterized by: firstly, process the waste powder with first acid leaching, alkali roasting, and second acid leaching to separate and extract rare-earths from rare-earth polishing powder waste to obtain the leaching solution of rare-earth chloride; secondly, precipitate from the leaching solution with ammonia to remove impurities and hydrochloric acid solution to obtain the purified solution of rare-earth chloride; thirdly, co-precipitate from the solution acquired in the second step with hydrofluoric acid, ammonium bicarbonate, and dispersant to obtain the lanthanum cerium fluoro-carbonate; and finally, after drying, two-stage high-temperature calcination, and ball milling, the regenerated rare-earth polishing powder with decent polishing performance can be obtained.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: September 12, 2023
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Yufeng Wu, Minwei Song, Qijun Zhang
  • Publication number: 20230265541
    Abstract: The invention relates to a method of recovering rare-earth in cerium-based rare-earth polishing powder waste by two-step acid leaching gradient separation, characterized by: firstly, using a one-step acid leaching treatment on cerium-based rare-earth polishing powder waste to obtain a rare-earth leaching liquor which is rich in La; secondly, the leaching residue is then processed through alkali activation and transformation process, water washing and impurity removal process, secondary acid leaching process, filtration, and recovery to obtain high purity CeO2 products; thirdly, the acid leaching liquor obtained through first acid leaching and second acid leaching process is finally precipitated by oxalic acid, filtered and calcined at high temperature to obtain rare-earth oxide mixed products, which achieves the gradient separation and recovery of rare-earths from cerium-based rare-earth polishing powder waste.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 24, 2023
    Inventors: Qijun Zhang, Yufeng Wu, Minwei Song
  • Patent number: 11686084
    Abstract: The present application relates to a prefabricated concrete beam-column node and a construction method thereof. The construction method of the prefabricated concrete beam-column node includes: assembling node connectors, and mounting studs on each node connector; welding a circumferential reinforcing plate with a groove hole in the center to a middle-rear section of each node connector; mounting a longitudinal rebar on each circumferential reinforcing plate; pouring a concrete beam between two circumferential reinforcing plates; welding a hidden corbel to a side flange of each of structural columns; hoisting the concrete beam, and overlapping each node connector with the corresponding hidden corbel; welding each node connector to the corresponding structural column; and pouring the concrete beam between the circumferential reinforcing plates and the structural columns.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: June 27, 2023
    Assignee: HAINAN UNIVERSITY
    Inventors: Yun Chen, Qijun Zhang
  • Patent number: 11635284
    Abstract: Provided are a testing apparatus for a pile end settlement of a rock-socketed driven PHC tube pile and an installation method thereof. The testing apparatus comprises a PHC tube pile, two measuring tubes, a cross pile tip, a pile tip steel plate, a fixer fixed in the PHC tube pile, a perforated steel plate located at a pile top of the PHC tube pile and a jack pressed on the perforated steel plate. The two measuring tubes are symmetrically arranged, the fixer is provided with two first measuring tube outlet holes, and the two measuring tubes respectively pass through the first measuring tube outlet holes of the fixer; and the perforated steel plate is also provided with two second measuring tube outlet holes, and the two measuring tubes respectively pass through the second measuring tube outlet holes of the perforated steel plate. (FIG.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: April 25, 2023
    Assignees: QINGDAO UNIVERSITY OF TECHNOLOGY, Qingdao Green Technology Geotechnical Engineering Co., Ltd, Zhongji JiuRui Geotechnical Engineering Co., Ltd., Shandong Luqiao Group Co., Ltd., Jinan, China, China State Construction Zhongxin Construction Engineering Co., Ltd.Shandong Branch
    Inventors: Yonghong Wang, Mingyi Zhang, Xiang Fang, Bo Han, Qijun Zhang, Yishun Jiang, Shiqiang Li, Dazhong Xu, Jun Wang, Chuantong Zhang, Yuning Ge, Yamei Zhang, Weihui Tian, Ziguang Jia, Xiaoning Liu
  • Publication number: 20230079543
    Abstract: The disclosure provides an electromagnetic device design system including: one or more processors of a machine; and computer-storage medium storing instructions, which when executed by the machine, cause the machine to perform operations for EM sensitivity analysis for an electromagnetic (EM) device. The operations include: initiating physical parameters of the EM device, wherein the EM device comprises multiple ports; performing EM simulation for the EM device at a pre-solution frequency using the finite-element method (FEM); applying single-size matrix Padé via Lanczos (MPVL) method in fast frequency sweep and performing EM simulation for the EM device under excitation at each port to obtain field solution of the EM device at frequencies in a frequency range; calculating S-parameters for the multiple ports of the EM device; and calculating derivatives of the S-parameters with respect to one of the physical parameters in the frequency range.
    Type: Application
    Filed: August 29, 2022
    Publication date: March 16, 2023
    Inventors: Feng FENG, Jianan ZHANG, Qijun ZHANG, Wei ZHANG, Jing JIN, Wei LIU
  • Publication number: 20220349171
    Abstract: The present application relates to a prefabricated concrete beam-column node and a construction method thereof. The construction method of the prefabricated concrete beam-column node includes: assembling node connectors, and mounting studs on each node connector; welding a circumferential reinforcing plate with a groove hole in the center to a middle-rear section of each node connector; mounting a longitudinal rebar on each circumferential reinforcing plate; pouring a concrete beam between two circumferential reinforcing plates; welding a hidden corbel to a side flange of each of structural columns; hoisting the concrete beam, and overlapping each node connector with the corresponding hidden corbel; welding each node connector to the corresponding structural column; and pouring the concrete beam between the circumferential reinforcing plates and the structural columns.
    Type: Application
    Filed: February 10, 2021
    Publication date: November 3, 2022
    Applicant: HAINAN UNIVERSITY
    Inventors: Yun CHEN, Qijun ZHANG
  • Patent number: 11486804
    Abstract: Provided are a device for simulating a full-scale pile-sinking process of a static pressure pile by air bag preloading and a test method thereof. The device comprises a frame, a beam, a hydraulic jack, a model box, a model pile, a first sand layer, an undisturbed soil mass, a second sand layer, a rubber pad, a forcing air bag, a counter-force steel plate, a model box top cover, a forcing pipe, a pressure relief pipe, a steel casing and a control system. The first sand layer, the undisturbed soil mass, the second sand layer, the rubber pad, the forcing air bag and the counter-force steel plate are laid in the model box in sequence; and the steel casing passes through the model box top cover, the counter-force steel plate, the forcing air bag and the rubber pad in sequence and then reaches a bottom portion of the second sand layer.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: November 1, 2022
    Assignees: QINGDAO UNIVERSITY OF TECHNOLOGY, Qingdao Green Technology Geotechnical Engineering Co., Ltd., China State Construction Zhongxin Construction Engineering Co., Ltd. Shandong Branch, Shandong Luqiao Group Co., Ltd., Jinan, China, Zhongji Jiurui Geotechnical Engineering Co., Ltd.
    Inventors: Yonghong Wang, Mingyi Zhang, Jun Wang, Bo Han, Jiangbin Wu, Chuantong Zhang, Xiang Fang, Yishun Jiang, Yuning Ge, Qijun Zhang, Weihui Tian, Yan Li, Xun Zhu, Baochang Zhang, Guodong Shao
  • Patent number: 11467448
    Abstract: Provided is a back light unit, a display unit and a display apparatus. The back light unit is configured to be disposed on a side of a display panel away from a display side, and includes a back plate and a plastic frame. The back plate includes a bottom plate and a side plate connected to an edge of the bottom plate, and a step is formed on an inner side of the side plate. The step has a first side away from the bottom plate and a second side away from an outer side of the side plate. The plastic frame is supported on the first side surface of the step, and a supporting part is disposed on an end surface of the side plate away from the bottom plate.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: October 11, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Dake Wang, Tianma Li, Liang Li, Guohui Wang, Qijun Zhang, Xuefeng Ding