Patents by Inventor Lei Du

Lei Du 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: 10889745
    Abstract: A plugging agent with temperature-resistant, salt-resistant and high-expansion for plugging large fractures and a preparation method thereof of the present disclosure are provided, the plugging agent system consists of the following components: main agent: 6%˜10%, cross-linking agent: 0.6%˜1%, initiator: 0.006%˜0.01%, additive: 6%˜14%, and the rest being water; the preparation method includes the following steps: adding montmorillonite to water to prepare a montmorillonite dispersion system; adding the main agent, the cross-linking agent and the initiator to the montmorillonite dispersion system to prepare a main agent solution; putting the main agent solution into an oven with a temperature range with 90˜20° C. for 9˜48 h to obtain gelation, the adhesive strength of the agent system can reach grade H, with 50˜80 expansion multiple, good strength after being expanded and good water plugging effect under the condition of a temperature of 140° C. and 250,000 degree of mineralization.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: January 12, 2021
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Fa Yang Jin, Wan Fen Pu, Wen Ge Hu, Hai Yang Zhao, Long He, Dai Jun Du, Ke Xing Li, Bao Lei Jiao, Bo Ren, Lin Sun, Zhen Qian, En Long Zhen, Rui Liu, Xiao Qing He
  • Publication number: 20210002527
    Abstract: Provided is a fireproof glue solution matrix and a preparation method thereof and a fireproof glue solution and a preparation method thereof. The fireproof glue solution matrix comprises silicon dioxide and also comprises a lubricating substance, wherein the lubricating substance is a copolymer of aromatic olefin and/or acrylic ester. The fireproof glue solution comprises the fireproof glue solution matrix. The fireproof glue solution prepared by the present invention has a viscosity of only 50-1000 cp, and is suitable for preparing laminated fireproof glass with a fireproof layer of thickness of less than 1 mm. In addition, the fireproof layer made of the fireproof glue solution has advantages of good fireproof and heat-insulating properties, high in hardness, high transmittance and good ultraviolet resistance performance.
    Type: Application
    Filed: March 8, 2017
    Publication date: January 7, 2021
    Inventors: Yuanchun MU, Dayan DU, Zhiwei XU, Yaohui LI, Lei XU, Jing FU, Jinzhen WANG, Fan ZHANG, Yuan AN
  • Publication number: 20210006438
    Abstract: Systems, methods, apparatuses, and computer program products for cross link interference (CLI) sounding reference signal (SRS)-reference signal received power (RSRP) measurement conditions reporting are provided. One method may include providing, to a serving network node, capability information indicating at least UE's capability to search for SRS timing, receiving SRS configuration in a measurement request from the serving network node, performing, by the UE, at least one SRS RSRP measurement as specified in the SRS configuration, and reporting, to the serving network node, CLI SRS RSRP measurement results.
    Type: Application
    Filed: May 15, 2020
    Publication date: January 7, 2021
    Inventors: Johannes Harrebek, Lei Du, Lars Dalsgaard, Klaus Ingemann Pedersen, Benny Vejlgaard
  • Publication number: 20200411304
    Abstract: The present disclosure discloses a film layer analysis method for an electroluminescent device. The electroluminescent device includes an anode layer, an electroluminescent material layer, and a silver-bearing cathode layer that are sequentially laminated. The film layer analysis method includes stripping the silver-bearing cathode layer from the electroluminescent device by using a first ion sputtering source to obtain an analysis sample with the electroluminescent material layer exposed, and analyzing the exposed electroluminescent material layer by using a second ion sputtering source; wherein sputtering energy of the first ion sputtering source is greater than sputtering energy of the second ion sputtering source.
    Type: Application
    Filed: November 1, 2019
    Publication date: December 31, 2020
    Inventors: Ying Liu, Yuhang Peng, Congcong Du, Lei Fan, Chunfang Fan, Qi Wu, Xiaozhong Xue, Haoran Qin
  • Patent number: 10836786
    Abstract: Disclosed are a crystal form of a dapagliflozin intermediate and a preparation method therefor, and specifically disclosed are a crystal form of the dapagliflozin intermediate (2S,3R,4S,5S,6R)-2-(4-chloro-3-(4-ethoxybenzyOphenyl)-2-ethoxy-6-(methylhydroxyl) tetrahydro-2H-pyran-3,4,5-triol and a preparation method therefor. The advantages thereof lie in that an intermediate can be highly purified to obtain a sample with a purity of 99.3% or more, which has an important significance for improving the quality of the dapagliflozin, and the preparation process is simple and suitable for industrial production.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: November 17, 2020
    Assignee: Jiangsu Hansoh Pharmaceutical Group Co., Ltd.
    Inventors: Xiang Li, Jun Yu, Haizhou Yu, Jinjia Wang, Lei He, Zuyin Du
  • Patent number: 10841485
    Abstract: A method includes obtaining a first preview picture collected by a camera, where an angle of view FOV of the camera is a first FOV value, the camera collects the first preview picture based on a second FOV value, and the second FOV value is less than the first FOV value. The method further includes adjusting the second FOV value to a third FOV value when it is detected that a quantity of at least one target human face in the first preview picture is greater than a first preset value, where the third FOV value is greater than the second FOV value, and the third FOV value is less than or equal to the first FOV value. The method further includes outputting an image that is photographed by the camera based on the third FOV value.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 17, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xun Liu, Lei Wu, Cheng Du, Wei Luo
  • Patent number: 10816868
    Abstract: The present invention is directed to an active molecule delivery system comprising a plurality of microcells wherein each of the microcells has a bottom, the panel has a first area and a second area, and the microcells in the first area have substantially the same bottom thickness and the microcells in the second area have added bottom thicknesses. Such a panel is useful for many applications, such drug administrations.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: October 27, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Yih-Ming Kang, Donald A. Schultz, Lei Liu, Renfu Cheng, Lin Shao, Hui Du, Ming Wang
  • Publication number: 20200275316
    Abstract: A method and apparatus for load balancing. The method executed by a master base station for load balancing comprising: determining a load balancing group, wherein the load balancing group includes a plurality of secondary base stations; and sending a grouping information about the load balancing group to each secondary base station of the load balancing group. The method executed by a secondary base station of a load balancing group for load balancing comprising: receiving a grouping information about the load balancing group from a master base station; exchanging the load information with other secondary base stations of the load balancing group; selecting a target secondary base station from the other secondary base stations according to the load information of other secondary base stations; and forwarding at least a portion of load of the secondary base station to the target secondary base station.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 27, 2020
    Inventors: Yang LIU, Lei DU
  • Publication number: 20200241293
    Abstract: Provided are a vehicle-mounted display device and a display system. The vehicle-mounted display device includes: an image source, a light reflection module, and an image size adjustment module which are located on a light path; wherein the image source is configured to emit image light to the light reflection module according to an image to be displayed; the light reflection module reflects the image light at least twice, and emits same to the image size adjustment module; and the image size adjustment module is configured to adjust and emit the image light incident thereon.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 30, 2020
    Inventors: Xin WANG, Fan YANG, Jianhua DU, Lei CAO
  • Publication number: 20200231977
    Abstract: The present invention provides a method for improving transformation efficiency of a plant. The method according to the present invention comprises the use of a nucleic acid encoding the amino acid sequence set forth in SEQ ID NO: 2 or 4, or a nucleic acid encoding a polypeptide comprising an amino acid sequence having at least 85% identity with the amino acid sequence set forth in SEQ ID NO: 2 or 4, and having a function of improving transformation efficiency of a plant.
    Type: Application
    Filed: June 7, 2018
    Publication date: July 23, 2020
    Applicants: INSTITUTE OF CROP SCIENCE, CHINESE ACADEMY OF AGRICULTURAL SCIENCES, JAPAN TOBACCO INC.
    Inventors: Xingguo YE, Ke WANG, Yuji ISHIDA, Chizu YANAGIHARA, Huiyun LIU, Kunyang WANG, Lei SHI, Lipu DU, Jing WANG, Zhishan LIN
  • Publication number: 20200236596
    Abstract: The present invention provides a bearer splitting method performed by user equipment and base station, and the corresponding user equipment and base station. A bearer splitting method performed by user equipment, comprising: carrying out measurement for one or more second base stations during the user equipment connecting to a first base station prior to network configuration; sending measurement results of at least part of the second base stations of the one or more second base stations to the first base station, such that the first base station selecting a target base station from the one or more second base stations according to the measurement results, wherein the target base station is used to control split bearer from the target and first base station to the user equipment.
    Type: Application
    Filed: October 12, 2017
    Publication date: July 23, 2020
    Inventors: Yang LIU, Lei DU
  • Publication number: 20200201133
    Abstract: The present invention is directed to an electrophoretic display device comprising microcells filled with an electrophoretic fluid and a dielectric layer, which comprises a first type of magnetic filler material, a second type of nonmagnetic filler material, and a polymeric material. The first and second types of filler material physically interact with each other and they are fixed and aligned in the dielectric adhesive layer in a direction perpendicular to a plane of the dielectric layer. The dielectric layer exhibits anisotropic conductivity having higher conductivity in the z direction compared to the other two orthogonal directions.
    Type: Application
    Filed: February 28, 2020
    Publication date: June 25, 2020
    Inventors: Craig LIN, Yu LI, Peter B. LAXTON, Lei LIU, Hui DU, HongMei ZANG
  • Patent number: 10689287
    Abstract: A method for preparing a doped optical fibre preform includes formulating, a rare earth material or a functional metal material and a co-doping agent into a doping solution, mixing a high-purity quartz powder with the doping solution, drying same at a temperature of 100° C.-150° C. for 12-48 hours, crushing and screening the same to obtain a doped quartz powder; depositing the doped quartz powder onto the surface of a target rod to form a doped core layer; replacing the doped quartz powder with the high-purity quartz powder, and depositing the high-purity quartz powder onto the surface of the doped core layer to form a quartz outer cladding; and removing the target rod, and gradually collapsing the entirety formed from the doped core layer and the quartz outer cladding at a high temperature to obtain the doped optical fibre preform.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: June 23, 2020
    Assignee: FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD
    Inventors: Cheng Du, Wenyong Luo, Lei Yan, Tao Zhang, Chao Chen, Yili Ke, Ming Kong, Jie Zhang, Zhijian Liu, Lifeng Liu
  • Publication number: 20200187284
    Abstract: An apparatus comprises at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: responsive to deactivation of all of a plurality of active cells associated with a duplicate link, cause said duplicate link to be deactivated.
    Type: Application
    Filed: June 16, 2017
    Publication date: June 11, 2020
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Samuli TURTINEN, Benoist SEBIRE, Chunli WU, Lei DU, Esa MALKAMAKI
  • Publication number: 20200177797
    Abstract: A method includes: obtaining a first preview picture collected by a camera, where an angle of view FOV of the camera is a first FOV value, the camera collects the first preview picture based on a second FOV value, and the second FOV value is less than the first FOV value; adjusting the second FOV value to a third FOV value when it is detected that a quantity of at least one target human face in the first preview picture is greater than a first preset value, where the third FOV value is greater than the second FOV value, and the third FOV value is less than or equal to the first FOV value; and outputting an image that is photographed by the camera based on the third FOV value.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 4, 2020
    Inventors: Xun Liu, Lei Wu, Cheng Du, Wei Luo
  • Publication number: 20200169925
    Abstract: A method includes monitoring for a radio link failure associated with a secondary cell of a secondary base station. This may be a PScell. A user device may select a second secondary cell as a target secondary cell. The user device initiates a relocation procedure with the target secondary cell.
    Type: Application
    Filed: August 10, 2017
    Publication date: May 28, 2020
    Inventors: Haitao LI, Lei DU
  • Patent number: 10656785
    Abstract: The present invention provides a method and a user device for managing application. The method includes: detecting the touch event which induced by a user touching icons displayed in a display interface; determining the area of the display interface which the first icon located in, when the touch event corresponding to the first icon is detected and the detected touch event persists a scheduled time; displaying a second icon in the determined area; detecting the movement path which induced by the user dragging the first icon through the application corresponding to the second icon, when the first icon moves into the location of the second icon. The distance of moving the first icon will not be very long and easy to operate, when the first icon is moved into the location of the second icon and the application corresponding to the first icon is deleted.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: May 19, 2020
    Assignee: Tencent Technology (Shenzhen) Company Limited
    Inventor: Lei Du
  • Patent number: 10646454
    Abstract: An active molecule delivery system whereby active molecules can be released on demand and/or a variety of different active molecules can be delivered from the same system and/or different concentrations of active molecules can be delivered from the same system. The active delivery system includes a plurality of microcells, wherein the microcells are filled with a medium including an active ingredient and charged or magnetic particles. The microcells include an opening, and the opening is spanned by a porous diffusion layer. Because the porous diffusion layer can be blocked with the charged or magnetic particles, the rate at which the active ingredient is dispensed can be controlled with an electric or magnetic field, respectively.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 12, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Lei Liu, Lin Shao, Chung Hui Lee Liu, Hui Du, Ming Wang
  • Patent number: 10646483
    Abstract: The present invention relates to the crystal form of imidazolone type compounds, and a preparation method, pharmaceutical composition and use thereof, and falls within the field of pharmaceutical compound crystals. The crystal form provided by the present invention has a good stability, comprising good stability under the three extreme conditions of high temperature, high humidity and strong illumination, and can also maintain a good stability during the tablet compressing process. The crystal form provided by the present invention has good absorption and metabolism properties in vivo, comprising the drug concentration of blood, the drug concentration-time curve AUC, the half-life period, etc. In addition, the dissolving rate of the crystal form of the present invention is improved, wherein same is beneficial for the applications thereof in preparations.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: May 12, 2020
    Assignee: Foreland Pharma Co., Ltd.
    Inventors: Qi Ji, Zhenjian Du, Xingmin Zhang, Lei Wang, Congmin Gao, Longlong Gong
  • Publication number: 20200134677
    Abstract: Systems and methods are disclosed for receiving, from a client device, a request to generate a value for a subject real-estate property, searching a database to identify a plurality of real-estate properties that have previously been sold, and automatically generating, based on a sale price of each of the plurality of real-estate properties, the value for the subject real-estate property. The systems and methods further provide for computing a collective physical state of the plurality of real-estate properties, determining whether the collective physical state corresponds to a threshold, and generating a prompt, based on the determination of whether the collective physical state corresponds to the threshold, for display on an operator device to review the automatically generated value before the value is presented to the client device.
    Type: Application
    Filed: October 31, 2018
    Publication date: April 30, 2020
    Inventors: Chris Said, Lei Du, Xinlu Huang, David Makanalani Lundgren, Zainul Shah