Patents by Inventor Weifeng Liu

Weifeng 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: 20250102323
    Abstract: A task processing method includes displaying a user prompt according to flight data of a plurality of flight tasks, in response to a selection operation with respect to the user prompt, selecting a target flight task, and automatically controlling, according to the flight data of the target flight task, an operation of an aerial vehicle to reproduce the target flight task. The target flight task is one flight task of the plurality of flight tasks. The flight data of the target flight task includes a waypoint coordinate of a waypoint and a gimbal orientation at the waypoint associated with the target flight task. Automatically controlling the operation of the aerial vehicle to reproduce the target flight task includes controlling the aerial vehicle to fly to the waypoint, and controlling a gimbal of the aerial vehicle to face the gimbal orientation while the aerial vehicle is at the waypoint.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Inventors: Bo PENG, Jiaxiang FANG, Weifeng LIU
  • Publication number: 20250092050
    Abstract: The present invention belongs to the technical field of pharmaceutical chemistry, and particularly relates to a 1-aminobenzo[4,5]imidazo[1,2-a]pyrazine-3-formamide compound, and the preparation therefor and use thereof. The structure of the compound of the present invention is as shown in formula (I). The compound has a novel structure and is an adenosine receptor inhibitor, has good inhibitory activity on adenosine A2A receptors, has good subtype selectivity, and can be used as a targeted adenosine A2A receptor inhibitor for immunotherapy. By means of inhibiting the activity of the adenosine A2A receptor, the function of removing tumor cells by the immune system is released, so that the effect of treating tumors is achieved.
    Type: Application
    Filed: July 7, 2022
    Publication date: March 20, 2025
    Applicant: SUN YAT-SEN UNIVERSITY
    Inventors: Wenhao HU, Wen DING, Shuhao LIU, Zhijing ZHANG, Linna WU, Weifeng HUANG, Xiaolei ZHANG, Taoda SHI, Jinping LEI
  • Publication number: 20250056834
    Abstract: A manufacturing method for a P-type laterally diffused metal oxide semiconductor device includes: forming a N-type buried layer in a substrate, forming a P-type region located on the N-type buried layer, and forming a mask layer located on the P-type region; patterning the mask layer to form at least two injection windows; performing N-type ion implantation by the at least two injection windows; forming an oxide layer; removing the mask layer; performing P-type ion implantation on the P-type region to form a P-type doped region; diffusing the P-type doped region to form a drift region and two P-type well regions, diffusing the high-voltage N-well doped region to form a high-voltage N-type well region, and diffusing the low-voltage N-well doped region to form a low-voltage N-type well region; and forming a source doped region, a drain doped region, and a gate.
    Type: Application
    Filed: November 30, 2022
    Publication date: February 13, 2025
    Inventors: Long ZHANG, Nailong HE, Yongjiu CUI, Sen ZHANG, Xiaona WANG, Feng LIN, Jie MA, Siyang LIU, Weifeng SUN
  • Patent number: 12222422
    Abstract: Techniques are disclosed for post-processing mapping data in a movable object environment. A method for post-processing mapping data can include obtaining a plurality of scans, each scan comprising georeferenced mapping data and corresponding payload pose data obtained from a payload supported by an unmanned aerial vehicle (UAV), generating a plurality of local maps based on matching portions of the plurality of scans using the georeferenced mapping data, generating a pose graph based on identifying a plurality of correspondence points among the plurality of local maps, and optimizing the pose graph by minimizing an error distance between each pair of correspondence points to obtain optimized transforms for two scans among the plurality of the scans.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: February 11, 2025
    Assignee: DJI RESEARCH LLC
    Inventors: Zhenyu Yang, Zhenghe Shangguan, Arjun Sukumar Menon, Weifeng Liu
  • Patent number: 12224340
    Abstract: A heterojunction semiconductor device with a low on-resistance includes a metal drain electrode, a substrate, and a buffer layer. A current blocking layer is arranged in the buffer layer, a gate structure is arranged on the buffer layer, and the gate structure comprises a metal gate electrode, GaN pillars and AlGaN layers, wherein a metal source electrode is arranged above the metal gate electrode; and the current blocking layer comprises multiple levels of current blocking layers, the centers of symmetry of the layers are collinear, and annular inner openings of the current blocking layers at all levels gradually become smaller from top to bottom. The AlGaN layers and the GaN pillars are distributed in a honeycomb above the buffer layer.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: February 11, 2025
    Assignees: SOUTHEAST UNIVERSITY, CSMC TECHNOLOGIES FAB2 CO., LTD.
    Inventors: Siyang Liu, Chi Zhang, Kui Xiao, Guipeng Sun, Dejin Wang, Jiaxing Wei, Li Lu, Weifeng Sun, Shengli Lu
  • Publication number: 20250046200
    Abstract: A control method of a movable object, includes obtaining a parameter of a restriction region, and controlling the movable object to execute a response measure associated with the restriction region according to the parameter of the restriction region. The response measure is for controlling an operation of the movable object. The response measure includes at least one of: controlling whether the movable object takes off within the restriction region; controlling whether the movable object lands within the restriction region; controlling whether the movable object flies above a specific altitude or below a specific altitude within the restriction region; or controlling whether the movable object is able to be confined in a space within the restriction region.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Inventors: Weifeng LIU, Jian ZHAO, Yulong DENG, Nanning LI
  • Publication number: 20250037434
    Abstract: Disclosed in the present disclosure are a method and apparatus for updating a target detection model. A specific implementation of the method comprises: constructing a three-dimensional model of a target article according to image data of the target article at a plurality of angles; generating, according to the three-dimensional model, a synthetic image comprising a target article object, which represents the target article; by taking the synthetic image as a sample image and taking the target article object as a label, obtaining training samples to generate a training sample set; and training a target detection model by means of the training sample set, so as to obtain an updated target detection model.
    Type: Application
    Filed: June 17, 2022
    Publication date: January 30, 2025
    Inventors: Weifeng LIU, Jichang SHAN, Jinlong HU, Yunjian CHENG, Xu LIU
  • Publication number: 20250035569
    Abstract: A security inspection device, a security inspection system and a security inspection method are provided, the device includes: a support frame defining an inspection channel; a first X-ray accelerator provided at a position of a top portion of the support frame and the position is offset from a centerline of the inspection channel, where the first X-ray accelerator is configured to radiate a first X-ray towards the inspection channel to inspect an object; a second X-ray accelerator configured to radiate a second X-ray to the inspection channel to inspect the object; and a detector apparatus, including: detector modules provided on the support frame and facing the first X-ray accelerator and the second X-ray accelerator, the detector modules receive the first X-ray and/or the second X-ray to form a transmission image of the object; the first X-ray, the second X-ray, and the detector modules are located in the same plane.
    Type: Application
    Filed: December 26, 2022
    Publication date: January 30, 2025
    Inventors: Yuanjing LI, Shangmin SUN, Chunguang ZONG, Tao SONG, Lei LIU, Yuan MA, Weifeng YU, Bicheng LIU
  • Patent number: 12209338
    Abstract: The present application discloses a preparation method of SM non-woven fabrics for roof anti-slip, which belongs to the technical field of roofing materials, comprising preparing spunbond non-woven fabric raw materials, preparing spunbond non-woven fabrics, preparing meltblown non-woven fabric raw materials, preparing primary SM non-woven fabrics, and post-processing; the spunbond non-woven fabric raw materials are prepared by uniformly mixing polypropylene with a low melt flow index, polypropylene with a high melt flow index, sodium alginate, antioxidant 1010, zinc stearate, ultraviolet absorber UV-531, polyvinyl alcohol, reinforcing agent, adhesive agent, and nano titanium dioxide. The present application can avoid the problem that the SM non-woven fabrics cannot be fully bonded together and are easy to delaminate when being combined, can also solve the problem of fabric breakage during high-speed production, and can also improve the wear resistance, strength, and stiffness of SM non-woven fabrics.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: January 28, 2025
    Assignee: DONGYING JOFO FILTRATION TECHNOLOGY CO., LTD.
    Inventors: Wensheng Huang, Yujia Liu, Guodong Xie, Weidong Zhang, Jinjing Qiu, Weifeng Sun, Zhiguo Huang
  • Patent number: 12204032
    Abstract: Techniques are disclosed for generating representation data of mapping data in a movable object environment. A method of generating representation data of three-dimensional mapping data may include: receiving three-dimensional mapping data captured by a sensor; generating representation data by projecting the three-dimensional mapping data onto a two-dimensional plane based on a selected perspective of view; and associating the representation data with the three-dimensional mapping data.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: January 21, 2025
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Zhenyu Yang, Weifeng Liu
  • Publication number: 20250019093
    Abstract: The present invention discloses an SMA wire-driven reusable release mechanism having a self-resetting function. The present invention adopts a structure of two-stage load reduction and one-stage release. First-stage load reduction: a compression rod and a hoop petal, as well as an inclined block and a shell or a sliding block, all cooperate with each other by means of inclined surfaces, which can transfer most of tension load of the compression rod to the shell, leaving only a small part of the load transmitted to a thrust bearing. Second-state load reduction: balls in the thrust bearing are coated with a molybdenum disulfide lubricating coating, which can effectively reduce friction so as to reduce a torque transmitted to a driving shaft. First-stage release: the driving shaft drives a thrust bearing to rotate by a certain angle, causing an upper ring of the thrust bearing to descend to release a certain axial clearance.
    Type: Application
    Filed: October 1, 2024
    Publication date: January 16, 2025
    Applicant: Beijing University Of Aeronautics And Astronautics
    Inventors: Xiaojun YAN, Jiaming LENG, Lei QU, Xiaoyuan WANG, Zhiwei LIU, Weifeng WAN, Huimin LI
  • Patent number: 12163803
    Abstract: A task processing method includes obtaining a task data loading request; and searching for target task data in a task database according to the task data loading request, where the task database stores task data corresponding to one or more tasks, and the target task data includes a coordinate of a waypoint of a target route of a target task. The method further includes controlling a movable object to reproduce the target task corresponding to the target task data. Controlling the movable object to reproduce the target task includes controlling the movable object to move according to the target route corresponding to the target task data.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: December 10, 2024
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Bo Peng, Jiaxiang Fang, Weifeng Liu
  • Patent number: 12156356
    Abstract: Methods, devices, and systems are provided for the encapsulation of electronic devices. The encapsulation includes positioning an electronic device in a cavity of a mold, and screen or stencil printing an encapsulant, in a liquid form, around the flexible electronic device. The mold is of a sufficient thickness to allow the encapsulant to completely cover electronic components mounted on a first surface of the electronic device.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: November 26, 2024
    Assignee: Flex Ltd.
    Inventors: Weifeng Liu, Jesus A. Tan, William L. Uy, Dongkai Shangguan
  • Patent number: 12128084
    Abstract: The present disclosure belongs to the technical field of health food, and in particular, relates to the use of PAYCS in the regulation of intestinal flora, metabolites, and brain neurotransmitters. PAYCS remedies scopolamine-induced memory impairment in mice through target oxidation, inflammatory stress and regulation of the intestinal microorganism-metabolite-brain neurotransmitter axis through PAYCS. PAYCS improves the memory pathway through the intestinal microorganism-metabolite-neurotransmitter axis. PAYCS can significantly reduce serum MDA and LDH levels and significantly increase liver SOD content. PAYCS-H inhibits the increase of liver TNF-? and IL-1?, while PAYCS-L can only reduce the content of TNF-? in the liver. Thus, PAYCS-L changes the ratio of Bacteroides/Firmicutes and increases the relative abundance of plants such as Cactaceae and Prevotellaceae, improving the neurotransmitters associated with the metabolism of tryptophan in the brain.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: October 29, 2024
    Assignee: Sericulture and Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences
    Inventors: Tiantian Zhao, Yehui Zhang, Yousheng Zhang, Wenjuan Jiao, Weifeng Liu, Shuai Chen
  • Patent number: 12125394
    Abstract: A system for collecting information regarding a flight restriction region includes one or more processors and a non-transitory computer readable storage medium storing instructions that, when executed by the one or more processors, cause the one or more processors to individually or collectively receive an input specifying a location of the flight restriction region from a user via a user input device, obtain information associated with the flight restriction region from one or more external data sources based on the location, and determine a space of the flight restriction region based on the information associated with the flight restriction region.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: October 22, 2024
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Weifeng Liu, Jian Zhao, Yulong Deng, Nanning Li
  • Publication number: 20240346399
    Abstract: The present application relates to the field of network information technology. In response to a problem of designing and manufacturing a product solely based on a user profile in the existing technology, a resource scheduling method and system are provided, so as to achieve a goal that a user satisfies with the products, an enterprise performs efficient production and a resource supplier timely provide resources. The present application ensures efficient production of user personalized products and personalized procurement of the resources by tripartite coordinating the user profile, a product profile and a resource profile; at the same time, forms resource requirements based on a personalized product design; and establishes the resource profile and transmitted it to the resource suppliers, so as to provide resource scheduling references to the resource suppliers for a quick supply.
    Type: Application
    Filed: June 27, 2024
    Publication date: October 17, 2024
    Inventors: Lucheng CHEN, Xiaoyi YU, Ming SUN, Xiaoping LU, Weifeng LIU, Yumei WANG, Yaqiong GAO
  • Publication number: 20240299587
    Abstract: The present invention relates to a method for identifying a candidate therapeutic for a disease caused by infection with a human cytomegalovirus (HCMV) having a glycoprotein B (gB) polypeptide, comprising contacting the HCMV gB polypeptide comprising a druggable region with a compound, wherein binding of said compound indicates a candidate therapeutic. The present invention also relates to candidate therapeutics comprising modulators and inhibitors of HCMV activity and pharmaceutical compositions comprising said modulators and inhibitors and methods of use thereof.
    Type: Application
    Filed: February 21, 2022
    Publication date: September 12, 2024
    Inventors: Xiaoyuan Sherry Chi, Philip Ralph Dormitzer, Weifeng Liu, Yuhang Liu
  • Patent number: 12066412
    Abstract: The present invention discloses a circulating multidimensional liquid chromatography and application thereof. The liquid chromatography comprises an infusion device, a sampling device, a collecting-resampling device, a chromatographic column switching device and a detecting device which are connected sequentially, wherein the collecting-resampling device comprises a collecting valve and a sample ring, and the collecting valve is connected with the sample ring; the sampling device is successively connected with the collecting valve and the chromatographic column switching device; the detecting device is also connected with the collecting valve; and the collecting valve is a three-slot three-position multi-way valve.
    Type: Grant
    Filed: August 27, 2023
    Date of Patent: August 20, 2024
    Assignee: SERICULTURE & AGRI-FOOD RESEARCH INSTITUTE GUANGDONG ACADEMY OF AGRICULTURAL SCIENCES
    Inventors: Tiantian Zhao, Yajun Chen, Yehui Zhang, Yousheng Zhang, Wenjuan Jiao, Weifeng Liu, Fang Zhou
  • Patent number: 11952278
    Abstract: The present invention belongs to the technical field of biomass carbon materials, and relates to a lignin porous carbon nanosheet, a preparation method therefor, and an application thereof in supercapacitor electrode materials. The method of the present invention performs layer-by-layer self-assembly of sulfonated lignin and oxalate in a selective solvent to prepare a layer-by-layer self-assembled lignin/oxalate composite, which is then carbonized and pickled to obtain the lignin porous carbon nanosheets. The lignin porous carbon nanosheets prepared by the above method of the present invention have a specific surface area of 200-1500 m2/g, a micropore specific surface area of 100-500 m2/g, a mesoporous specific surface area of 100-1000 m2/g, a pore diameter of 0.5-30 nm, and a pore volume of 0.5-1.5 cm3/g; they can be applied to supercapacitor electrode materials, showing higher specific capacitance and excellent rate performance (with a specific capacitance retention rate of 76.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: April 9, 2024
    Assignee: South China University of Technology
    Inventors: Xueqing Qiu, Dongjie Yang, Huan Wang, Zhiqiang Fang, Hongming Lou, Weifeng Liu, Zhixian Li, Jinhao Huang, Xinping Ouyang
  • Patent number: 11915036
    Abstract: The present application discloses a method for modifying an internal configuration of a virtual machine, a system and a device, wherein the method is applied to a virtual machine installed with a proxy service therein, and the proxy service is configured for, after the proxy service itself is started up, sending a datum request to a preset IP address via a virtual network card corresponding to the virtual machine. The method includes, when there is a target virtual network card sending a datum request to the preset IP address, according to a predetermined corresponding relation between virtual network cards and virtual machines, determining a target virtual machine corresponding to the target virtual network card; from a database, obtaining target configuration data corresponding to the target virtual machine.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: February 27, 2024
    Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.
    Inventors: Yan Xie, Weifeng Liu, Xuliang Guo