Patents by Inventor Ruifeng Li

Ruifeng Li 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: 11362288
    Abstract: The disclosure relates to the technical field of display, and provides a flexible display screen, a method for deformably driving the same, and a display device. The flexible display screen includes a flexible display panel and a deformable driver disposed on a back surface of the flexible display panel. The deformable driver drives the flexible display panel to deform based on the electrodeformation. The deformable driver includes a plurality of deformable units arranged in an array. The flexible display screen can achieve deformation with a variety of degrees of freedom, and can precisely control the deformation, thereby easy to achieve ultra-thin screen design.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: June 14, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Junhuan Liu, Tianxiao Zhao, Ruifeng Yang, Huaxu Yang, Tong Li
  • Patent number: 11335785
    Abstract: A MOS integrated circuit basic unit includes: a drain semiconductor region; a lightly doped drain region; a channel semiconductor region; a source semiconductor region; a source electrode; a gate electrode; a gate dielectric layer; and a drain electrode. The drain semiconductor region is the bottom of the basic unit. The gate electrode has a ring structure, which surrounds the channel semiconductor region, the source semiconductor region and the lightly doped drain region. The upper surface of the gate electrode is aligned to the upper surface of the source semiconductor region; and a bottom surface of the gate electrode is lower than an interface of the lightly doped drain region and the drain semiconductor region. The gate dielectric layer is disposed between the gate electrode and the adjacent functional layer. The drain semiconductor region is connected to the drain electrode of the basic unit.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: May 17, 2022
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Ping Li, Yongbo Liao, Chenxi Peng, Yaosen Li, Ruihong Nie, Ke Feng, Xianghe Zeng, Ruifeng Tang, Jiarui Zou, Zhaoxi Hu, Fan Lin
  • Publication number: 20220138424
    Abstract: A domain-specific phrase mining method, apparatus and electronic device are provided. A specific implementation includes: performing word vector conversion on a domain-specific phrase in a target text to obtain a first word vector, and performing word vector conversion on an unknown phrase in the target text to obtain a second word vector, where the domain-specific phrase is a phrase in a domain to which the target text belongs; obtaining a word vector space formed by the first and second word vectors, and identifying a preset quantity of target word vectors around the second word vector in the word vector space; determining, based on similarity values indicative of similarity between the preset quantity of target word vectors and the second word vector, whether the unknown phrase is a phrase in the domain to which the target text belongs.
    Type: Application
    Filed: January 13, 2022
    Publication date: May 5, 2022
    Inventors: Xijun GONG, Zhao LIU, Rui LI, Ruifeng LI, Haihao TANG
  • Publication number: 20220077417
    Abstract: The present application discloses a first aspect provides a quantum dot light-emitting diode, including: a cathode and an anode which are oppositely arranged; a quantum dot light-emitting layer arranged between the cathode and the anode; and a stacked layer arranged between the cathode and the quantum dot light-emitting layer. A stacked layer includes: a first metal oxide nanoparticle layer, and a mixed material layer arranged on a surface of the first metal oxide nanoparticle layer far away from the quantum dot light-emitting layer. The mixed material layer includes: first metal oxide nanoparticles, and a second metal oxide dispersed among gaps of the first metal oxide nanoparticles. First metal oxide nanoparticles in the first metal oxide nanoparticle layer serve as an electron transport material. A content of the second metal oxide in the mixed material layer gradually increases in a direction from the quantum dot light-emitting layer to the cathode.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 10, 2022
    Inventors: Ruifeng LI, Lei QIAN, Weiran CAO, Wenyong LIU
  • Publication number: 20210216686
    Abstract: Embodiments of the present disclosure disclose a method, apparatus and electronic device for constructing a reinforcement learning model, and a computer readable storage medium, relate to the field of big data and deep learning technology. An implementation of the method can include: establishing a first simulation model between a calciner coal feed amount and a calciner temperature; establishing a second simulation model among a kiln head coal feed amount, a kiln current, a secondary air temperature, and a smoke chamber temperature; establishing a prediction model among: an under-grate pressure; the calciner temperature output by the first simulation model; the kiln current, the secondary air temperature, and the smoke chamber temperature content output by the second simulation model; and a free calcium; and constructing a reinforcement learning model according to a preset reinforcement learning model architecture, using the first simulation model, the second simulation model, and the prediction model.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Ying LIU, Xin Xie, Ming Xu, Yuezhen Qi, Ruifeng Li, Lu Bai
  • Publication number: 20210211365
    Abstract: A filter debugging method, a device, an electronic apparatus and a readable storage medium are provided. The filter debugging method includes: step S1: inputting a current hole parameter and a current index value of a filter into a policy network which is pre-trained; step S2: determining, by the policy network, a target hole to be polished of the filter, according to the current hole parameter and the current index value of the filter; step S3: controlling a mechanical arm to polish the target hole of the filter; and step S4: determining whether the filter is qualified according to an index value of the polished filter; in a case that the filter is qualified, ending a process including the steps S1 to S4; in a case that the filter is unqualified, performing the steps S1 to S4 circularly until the filter is qualified.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 8, 2021
    Applicant: Beijing Baidu Netcom Science & Technology Co., Ltd
    Inventors: Ming XU, Xin XIE, Ying LIU, Yuezhen QI, Ruifeng LI, Lu BAI
  • Publication number: 20210209375
    Abstract: A method and an apparatus for recognizing a key identifier in a video, a device and a storage medium are disclosed. The method includes: extracting a plurality of key frames from the video; generating a mask of the key identifier by using a difference between the plurality of key frames; determining, in video frames of the video, a key identifier area image by using the mask; and recognizing the key identifier area image to obtain a key identifier category included in the video.
    Type: Application
    Filed: March 22, 2021
    Publication date: July 8, 2021
    Applicant: Beijing Baidu Netcom Science And Technology Co., Ltd.
    Inventors: Ruifeng Li, Lei Yuan, Xing Dai, Qinglin Qin, Zhuo Sun, Zhiqiang Liu
  • Patent number: 10988753
    Abstract: The present invention discloses an aspartase variant, method of preparing the same and use thereof. Compared with sequence 2 in the sequence listing, the amino acid sequence of the aspartase variant provided in the present invention has more than 96% identity, and there are mutations in T187I and N326C at positions 187 and 326, respectively, and has improved catalytic activity for the ammoniation of acrylic acid, compared with the aspartase shown in sequence 2. The experiment proves that the aspartase variant provided in the present invention does have improved catalytic activity for the ammoniation of acrylic acid compared with the wild type parent aspartase, and has better thermal stability and pH spectrum. The reaction can greatly increase the conversion ratio of acrylic acid.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 27, 2021
    Assignee: QINHUANGDAO HUAHENG BIOENGINEERING CO., LTD.
    Inventors: Bian Wu, Yang Liu, Ruifeng Li, Dongzhu Zhang, Zhicheng Liu, Hui Zhang
  • Patent number: 10836231
    Abstract: The present invention discloses an automatic adjustment device for a front suspension of a driverless formula racing car, comprising: a vertical column, an upper fork arm, a lower fork arm, a strength adjuster, a push rod, a rocking block and a shock absorber. By arranging the strength adjuster between the upper fork arm and the lower fork arm, and by adjusting the degree of tightness between the upper fork arm and the lower fork arm, the present invention can automatically adjust the tensile and support strength of the strength adjuster according to different car conditions and road conditions in which the racing car runs, to guarantee the structure stability of the front suspension in the running process, and prevent the front suspension from being loosening or fracturing, thereby having good adaptability and stability to structural deformation.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: November 17, 2020
    Assignee: Hefei University of Technology
    Inventors: Yongjia Wang, Bofu Wu, Shuhua Li, He Huang, Wuhua Jiang, Ruifeng Li, Jingting Yang, Junzhao Yu
  • Publication number: 20200290423
    Abstract: The present invention discloses an automatic adjustment device for a front suspension of a driverless formula, racing car, comprising: a vertical column, an upper fork arm, a lower fork arm, a strength adjuster, a push rod, a rocking block and a shock absorber. By arranging the strength adjuster between the upper fork arm and the lower fork arm, and by adjusting the degree of tightness between the upper fork arm and the lower fork arm, the present invention can automatically adjust the tensile and support strength of the strength adjuster according to different car condifions and road conditions in which the racing car runs, to guarantee the structure stability of the front suspension in the running process, and prevent the front suspension from being loosening or fracturing, thereby having good adaptability and stability to structural deformation.
    Type: Application
    Filed: March 29, 2019
    Publication date: September 17, 2020
    Inventors: Yongjia Wang, Bofu Wu, Shuhua Li, He Huang, Wuhua Jiang, Ruifeng Li, Jingting Yang, Junzhao Yu
  • Patent number: 10708398
    Abstract: A terminal device includes a screen, a first camera, and a movement mechanism. The first camera is disposed on a movable component of the movement mechanism, the movement mechanism is disposed on the back of the screen, and the movable component is configured to drive the first camera to move from the back of the screen to a position at which the first camera can be seen from in front of the terminal device.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: July 7, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bangshi Yin, Ruifeng Li, Jianhong Luo, Xiulan Liu, Yan Wang, Jiuliang Gao, Fan Yang, Tao Wang, Hui Li
  • Patent number: 10683459
    Abstract: Provided are a liquid-phase hydroisomerization system and a process therefor and use thereof. The system comprises a gas-liquid mixer (3), a hydroisomerization reactor (4) and a fractionating column (6). An oil product and hydrogen are mixed as a liquid hydrogen-oil mixture, and are introduced into the hydroisomerization reactor for a hydroisomerization reaction, and after being fractionated, a target product is led out. A supplemental hydrogen-dissolving inner member is provided at least between a group of two adjacent catalyst bed layers in order to supplement hydrogen to the reactants. The process cancels a circulating hydrogen compressor, has a simple process flow, and can be applied to the production of a lubricant base oil by the hydroisomerization of a lubricant raw material or the production of a low freezing point diesel by the hydroisomerization of and the reduction in the freezing point of a diesel raw material.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: June 16, 2020
    Assignee: PetroChina Company Limited
    Inventors: Shoutao Ma, Xiaoqiao Huang, Famin Sun, Qingfeng Ma, Fangming Xie, Yongsheng Duan, Xianjun Wu, Fengxuan Li, Dongmei Ge, Endong Xia, Ruifeng Li, Ronglei Ji, Liying Liu, Lihong Qin, Xiangbin Meng, Chunming Dong, Xuefeng Lu, Rui Wang, Tiegang Xu, Shurong Ni
  • Publication number: 20200157522
    Abstract: The present invention discloses an aspartase variant, method of preparing the same and use thereof. Compared with sequence 2 in the sequence listing, the amino acid sequence of the aspartase variant provided in the present invention has more than 96% identity, and there are mutations in T187I and N326C at positions 187 and 326, respectively, and has improved catalytic activity for the ammoniation of acrylic acid, compared with the aspartase shown in sequence 2. The experiment proves that the aspartase variant provided in the present invention does have improved catalytic activity for the ammoniation of acrylic acid compared with the wild type parent aspartase, and has better thermal stability and pH spectrum. The reaction can greatly increase the conversion ratio of acrylic acid.
    Type: Application
    Filed: July 24, 2018
    Publication date: May 21, 2020
    Inventors: Bian WU, Yang LIU, Ruifeng LI, Dongzhu ZHANG, Zhicheng LIU, Hui ZHANG
  • Publication number: 20190333368
    Abstract: This application discloses an infrared light transmit apparatus and a mobile terminal in which the infrared light transmit apparatus is applied.
    Type: Application
    Filed: June 23, 2016
    Publication date: October 31, 2019
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Ruifeng LI, Chenlong LI, Jian XIE, Lipeng QI
  • Publication number: 20190266315
    Abstract: The fingerprint-based login method includes: waking up an operating system of a terminal device where a fingerprint sensor is disposed based on a detected non-press-type touch operation against the fingerprint sensor; controlling the fingerprint sensor to acquire fingerprint data based on a fingerprint data acquisition instruction sent by the waken-up operating system; storing the acquired fingerprint data to a designated security region in the terminal device by the waken-up operating system; and judging whether the fingerprint data stored in the designated security region matches fingerprint password data by the waken-up operating system upon detecting a press-type touch operation against the fingerprint sensor, such that a login operation is performed in the operating system if the stored fingerprint data matches the fingerprint password data, the problem that the fingerprint modules using the conventional MCUs failing to satisfy the requirements may not implement the system login function is effectively s
    Type: Application
    Filed: May 13, 2019
    Publication date: August 29, 2019
    Inventors: Ruifeng LI, Bing WANG, Wenbin SUN
  • Publication number: 20190215389
    Abstract: A terminal device includes a screen, a first camera, and a movement mechanism. The first camera is disposed on a movable component of the movement mechanism, the movement mechanism is disposed on the back of the screen, and the movable component is configured to drive the first camera to move from the back of the screen to a position at which the first camera can be seen from in front of the terminal device.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Inventors: Bangshi Yin, Ruifeng Li, Jianhong Luo, Xiulan Liu, Yan Wang, Jiuliang Gao, Fan Yang, Tao Wang, Hui Li
  • Publication number: 20190140681
    Abstract: A handset is provided. The handset has a housing, a card connector, and a card tray, the card tray is configured to be attached to or detached from the card connector. The housing has a pinhole, the card tray is detached from the card connector after an pin passes through the pinhole; a sealing kit is inside the handset, the sealing kit has a gap, the gap's position on the sealing kit corresponds to the pinhole's position; when the pin passes through the pinhole and the gap on the sealing kit from outside of the handset, the gap on the sealing kit is opened; when the pin is unplugged from the sealing kit, the gap on the sealing kit is closed. When the pin is unplugged from the sealing kit, the opening on the sealing kit is closed. Therefore, the sealing kit is used to implement a water-proof effect.
    Type: Application
    Filed: April 19, 2017
    Publication date: May 9, 2019
    Inventors: Jiuliang GAO, Ruifeng LI, Guanglong LI
  • Patent number: 10284697
    Abstract: A terminal device, including a screen, a first camera, and a movement mechanism, where the first camera is disposed on a movable component of the movement mechanism, the movement mechanism is disposed on the back of the screen, and the movable component is configured to drive the first camera to move from the back of the screen to a position at which the first camera can be seen from in front of the terminal device.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: May 7, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bangshi Yin, Ruifeng Li, Jianhong Luo, Xiulan Liu, Yan Wang, Jiuliang Gao, Fan Yang, Tao Wang, Hui Li
  • Patent number: 10258965
    Abstract: The present invention relates to a method for preparing a sulfur-resistant catalyst for aromatics saturated hydrogenation, comprising the steps of: preparing noble metal impregnation solutions from a noble metal and deionized water or an acid solution; impregnating a carrier with the impregnation solutions sequentially from high to low concentrations by incipient impregnation; homogenizing, drying, and calcinating to obtain the sulfur-resistant catalyst for aromatics saturated hydrogenation. The catalyst for aromatics saturated hydrogenation prepared by the method according to the present invention is primarily used in processing low-sulfur and high-aromatics light distillate, middle distillate, atmospheric gas oil, and vacuum gas oil.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 16, 2019
    Assignee: PETROCHINA COMPANY LIMITED
    Inventors: Xiaodong Yang, Yanfeng Liu, Sheng Hu, Chunmei Yu, Hongling Chu, Xinmiao Wang, Shanbin Gao, Bin Xie, Famin Sun, Wencheng Zhang, Jintao Guo, Quanguo Zhang, Lili Jiang, Xiaofeng Wang, Yuanyuan Ji, Ran Sun, Yuxiao Feng, Xianjun Wu, Guojia Zhang, Tan Zhao, Wenyong Liu, Rui Li, Ruifeng Li, Cheng Tang
  • Patent number: 10252255
    Abstract: Disclosed are a method for preparing a noble metal hydrogenation catalyst comprising preparing a carrier from a molecular sieve having a 10-member ring structure and/or an amorphous porous material; preparing a noble metal impregnation solution; and preparing noble metal impregnation solutions in a concentration gradient ranging from 0.05 to 5.0 wt % with deionized water, and sequentially impregnating the carrier with the impregnation solutions from low to high concentrations during the carrier impregnation process, or preparing a noble metal impregnation solution at a low concentration ranging from 0.05 to 0.5 wt % and impregnating the carrier by gradually increasing the concentration of the noble metal impregnation solution to 2.0 to 5.0 wt % in the impregnation process, followed by homogenization, drying, and calcination, as well as a noble metal hydrogenation catalyst, use thereof, and a method for preparing lubricant base oil.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 9, 2019
    Assignee: PETROCHINA COMPANY LIMITED
    Inventors: Xiaodong Yang, Chunmei Yu, Yanfeng Liu, Sheng Hu, Zhihua Zhang, Famin Sun, Wencheng Zhang, Jintao Guo, Wenyong Liu, Xinmiao Wang, Shanbin Gao, Bin Xie, Jinxian Jiang, Yuhe Yang, Rui Li, Guojia Zhang, Lili Jiang, Tan Zhao, Dongqing Wang, Jingying Zhao, Quanguo Zhang, Ruifeng Li, Shengbo Sun, Hong Li, Cheng Tang