Patents by Inventor An Xu

An Xu 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).

  • Recombinant vector constructed from an encoding gene of a nitrilase mutant, a recombinant genetic engineered strain and application thereof
    Patent number: 11525131
    Abstract: The present invention discloses a recombinant vector constructed from an encoding gene of a nitrilase mutant, a recombinant genetic engineered strain and application thereof the nucleotide sequence of the gene is shown in SEQ ID No. 5, and the amino acid sequence of the mutant is shown in SEQ ID No. 6. In the present invention, by the protein molecular modification, thermostability of the purified nitrilase LNIT5 is increased by up to 4.5 folds; and by utilizing recombinant E. coli containing the nitrilase mutant to hydrolyze 1-cyanocyclohexylacetonitrile at a high temperature (45° C.), product tolerance is increased, activity of NITS-L201F is increased by 20%, and the mutant NITLNIT5-AcN can completely hydrolyze 750 mM 1-cyanocyclohexylacetonitrile within 8 hours and achieve an doubled conversion rate.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: December 13, 2022
    Assignee: ZHEJIANG UNIVERSITY OF TECHNOLOGY
    Inventors: Yaping Xue, Yuguo Zheng, Zhe Xu, Zhiqiang Liu
  • Time-segmented signal timing method and apparatus for traffic light, electronic device and storage medium
    Patent number: 11527155
    Abstract: A time-segmented signal timing method is related to the field of intelligent transportation. The specific implementation is: obtaining traffic volume data of a target intersection in each period of time of N consecutive days, N being an integer greater than 1; performing curve fitting on the traffic volume data to determine a traffic volume curve corresponding to the target intersection of each day; determining calculating respective target points in the traffic volume curve with second derivatives satisfying a preset condition; and performing time-segmented signal timing on a traffic light at the target intersection based on time points corresponding to the respective target points.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: December 13, 2022
    Assignee: APOLLO INTELLIGENT CONNECTIVITY (BEIJING) TECHNOLOGY CO., LTD.
    Inventors: Xuan Huang, Fan Yang, Qiqi Xu, Chengfa Wang, Yongyi Sun, Hui Yuan
  • Displays with direct-lit backlight units
    Patent number: 11526051
    Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: December 13, 2022
    Assignee: Apple Inc.
    Inventors: Daming Xu, Wei Lv, Pee Khiam So, Wenyong Zhu, Rong Liu, Victor H. Yin, Mookyung Son, Jun Qi, Yufeng Yan, Shaofeng Liu, Thomas O. Henry, Suraj P. Gorkhali
  • Wireless device power saving for multi-TRP transmissions
    Patent number: 11528776
    Abstract: Apparatuses, systems, and methods for performing multi-TRP transmissions using techniques for reducing wireless device power consumption. A wireless device may select a downlink signal buffering method for a communication slot. The downlink signal buffering method may be selected from a single antenna panel signal buffering method or a multi-antenna panel signal buffering method. One or more beams for which to perform downlink signal buffering for the communication slot may be selected based at least in part on the downlink signal buffering method selected. Downlink signals may be received from one or more cellular base stations during the communication slot using the selected one or more beams. The downlink signals received using the selected one or more beams may be buffered by the wireless device.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: December 13, 2022
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Dawei Zhang, Haijing Hu, Yang Tang, Wei Zeng, Haitong Sun, Hong He, Yuchul Kim, Chunhai Yao, Weidong Yang, Chunxuan Ye, Jie Cui, Oghenekome Oteri, Fangli Xu
  • Data retransmission method and apparatus to obtain information to be transmitted and to perform Polar encoding on the information
    Patent number: 11528040
    Abstract: This disclosure provides a data retransmission method and apparatus. The method includes: A transmitting device obtains information to be transmitted for a tth time, where the information to be transmitted for the tth time includes Rt extension locations and information to be transmitted for a (t?1)th time, and the extension locations include Mt information bits and Lt check bits corresponding to the Mt information bits. The transmitting device then performs Polar encoding on the information to be transmitted for the tth time, to obtain a codeword after the Polar encoding, obtains a codeword for (t?1)th retransmission based on the codeword after the Polar encoding, and transmits the codeword for (t?1)th retransmission. A receiving device performs polar decoding after receiving the codeword for (t?1)th retransmission, to obtain a decoding result of codewords for t times of transmission.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: December 13, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mingmin Zhao, Gongzheng Zhang, Chen Xu, Rong Li
  • Methods of measuring real-time junction temperature in silicon carbide power MOSFET devices using turn-on delay, related circuits, and computer program products
    Patent number: 11525740
    Abstract: A method of measuring a junction temperature of a SiC MOSFET can be provided by applying a gate-source voltage to an external gate loop coupled to a gate of the SiC MOSFET, detecting a first time when the gate-source voltage exceeds a first value configured to disable conduction of a current in a drain of the SiC MOSFET, detecting, after the first time, a second time when a voltage across a common source inductance in a package of the SiC MOSFET indicates that the current in the drain is greater than a reference value, defining a time interval from the first time to the second time as a turn on delay time of the SiC MOSFET and determining the junction temperature for the SiC MOSFET using the turn on delay time.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: December 13, 2022
    Assignee: Boards of Regents, The University of Texas System
    Inventors: Bilal Akin, Fei Yang, Shi Pu, Chi Xu, Bhanu Vankayalapati
  • Terminals and display screens
    Patent number: 11527592
    Abstract: The present disclosure relates to terminals and display screens. In an embodiment, a terminal includes a display area, the display area includes at least two display regions, the at least two display regions include a first display region and a second display region, a pixel density of the first display region is less than a pixel density of the second display region, and the pixel density of the first display region is less than or equal to a maximum pixel density of the first display region in a transparent state when the first display region is unlit.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: December 13, 2022
    Assignee: YUNGU (GU'AN) TECHNOLOGY CO., LTD.
    Inventors: Qi Shan, Tong Xu, Xuejing Zhu
  • Unidirectional or bidirectional sand dispensing device
    Patent number: 11524331
    Abstract: A unidirectional or bidirectional sand dispensing device, including a discharge port (10), the discharge port includes a lower plate (11) and an upper plate (12), the upper plate is provided above the lower plate, an included angle between a horizontal plane and a straight line where an endpoint of a free end of the upper plate and an endpoint of a free end of the lower plate are located is a leakage angle (13), that is to say, a particulate material forms an inclined plane between the upper plate and the lower plate, and an included angle between the inclined plane and the horizontal plane is the leakage angle, which can be adjusted by changing relative positions of the upper plate and the lower plate. The direction of an opening of the sand passing passage is opposite to a moving direction during the sand dispensing operation.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 13, 2022
    Inventors: Fan Peng, Bao Yang, Jiejun He, Yunlong Xu, Yantao Wang
  • Multilayer conductor interconnects for high density light emitter arrays
    Patent number: 11527868
    Abstract: A multilayer interconnect is described which enables electrically connecting a complex distribution of VCSEL or other light emitter elements in a large high density addressable array. The arrays can include many groups of VCSEL elements interspersed among each other to form a structured array. Each group can be connected to a contact pad so that each group of light emitter elements can be activated separately.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 13, 2022
    Assignee: Princeton Optronics, Inc.
    Inventors: Chuni Ghosh, Jean-Francois Seurin, Laurence Watkins, Guoyang Xu
  • H3K27 demethylase inhibitors in pediatric and juvenile osteoporosis
    Patent number: 11524011
    Abstract: The present invention provides methods for manipulating epigenetic factors to treat pediatric or juvenile osteoporosis. Specifically, the present invention provides methods for the application of H3K27 demethylase inhibitors in pediatric or juvenile subjects with osteoporosis. Thus, the present invention provides methods of administration of the H3K27 demethylase inhibitor, GSK-J4, to pediatric or juvenile subjects to effectively inhibit primary and secondary pediatric osteoporosis, especially for long-term glucocorticoid treated patients (juvenile rheumatoid disorders, Crohn's disease, nephrotic syndrome, and Duchenne muscular dystrophy) and patients who have compromised mobility (cerebral palsy, Rett syndrome, Duchenne muscular dystrophy, spina bifida, and spinal muscular atrophy).
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 13, 2022
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Mei Wan, Xu Cao
  • Multi-user personalization at a voice interface device
    Patent number: 11527249
    Abstract: A method at an electronic device with one or more microphones and a speaker includes receiving a first voice input; comparing the first voice input to one or more voice models; based on the comparing, determining whether the first voice input corresponds to any of a plurality of occupants, and according to the determination, authenticating an occupant and presenting a response, or restricting functionality of the electronic device.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: December 13, 2022
    Assignee: Google LLC
    Inventors: Kenneth Mixter, Diego Melendo Casado, Bibo Xu
  • Transistors with switchable polarity and non-volatile configurations
    Patent number: 11527648
    Abstract: Transistors with switchable polarity and non-volatile configurations are provided. The transistors include a van der Waals (vdW) semiconductor layer. A ferroelectric layer with local polarization determines the type and concentration of the doping in the vdW semiconductor layer. Local program gates allow application of voltage to set or switch the polarization in the ferroelectric layer in the source and drain regions. Source and drain contacts permit either n-type or p-type transistor operations according to the carrier polarity in the vdW semiconductor layer.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: December 13, 2022
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Wenjuan Zhu, Kai Xu, Jialun Liu, Zijing Zhao
  • Light modulating liquid crystal cell, display panel and display device
    Patent number: 11526061
    Abstract: A light modulating liquid crystal cell, a display panel, and a display device are provided. The light modulating liquid crystal cell has a light-exiting area and a non-light-exiting area surrounding the light-exiting area and includes first pixels located in the light-exiting area. Each first pixel includes first sub-pixels, and each first sub-pixels includes a first transistor. The first sub-pixels include at least two first sub-pixels arranged in a first direction and at least two first sub-pixels arranged in a second direction, and the first direction intersects the second direction. In the first sub-pixels of one first pixel, gate electrodes of the first transistors are electrically connected to a same first scanning line, and source electrodes of the first transistors are electrically connected to a same first data line.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: December 13, 2022
    Assignee: Tianma Micro-Electronics Co., Ltd.
    Inventors: Cheng Qian, Xu Jiang, Kaihong Huang, Mingji Xu
  • Method and network node for handling transmission of LTE or NR signals and NB-IoT signals to wireless communication devices
    Patent number: 11528732
    Abstract: Disclosed is a method performed by a radio access network node of a wireless communication network for handling transmission of LTE or NR signals as well as NB-IoT signals to wireless communication devices over a carrier comprising a plurality of PRBs. The method comprises scheduling the carrier so that at least one of the PRBs is to be used for transmission of NB-IoT signals, called NB-IoT PRBs, and some of the PRBs are to be used for transmission of LTE or NR signals, called LTE PRBs.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: December 13, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhongwen Li, Youping Su, Yuanjun Xu
  • Multi-lens camera
    Patent number: 11525973
    Abstract: A multi-lens camera includes a main housing assembly, lenses, a lens adjuster and a transparent cover. The transparent cover is mounted on the main housing assembly; the lens adjuster is mounted in the space formed by the main housing assembly and the transparent cover; the transparent cover includes a flat portion and a curved portion surrounding the flat portion; the lenses are located in the space covered by the curved portion; the lens adjuster includes a fixing disc and at least two lens brackets; each of the lens brackets includes a first bracket and a second bracket arranged on the first bracket; the first support is movably arranged on the fixing disc, and is capable of moving along the circumferential direction of the fixing disc; a lens is rotationally engaged with the second bracket, such that the lens rotates around axis thereof.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: December 13, 2022
    Assignee: HANGZHOU HIKIVISION DIGITAL TECHNOLOGY CO., LTD.
    Inventors: Yang Li, Caisheng Yan, Zhiqiang Rong, Zhan Ye, Peng Xu
  • Upgrade management method and scheduling node, and storage system
    Patent number: 11526276
    Abstract: A storage system and method for performing upgrade management are provided. A plurality of nodes in the storage systems are divided into groups. A scheduling node obtains a constraint condition of each group. The constraint condition comprises a maximum quantity of nodes in a corresponding group that are allowed to be upgraded in parallel. Nodes in a first batch for upgrading in parallel from the groups based on the constraint condition of each group are selected. An upgrade instruction is sent to the nodes in the first batch.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 13, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Fei Xu
  • Shelf
    Patent number: D972347
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: December 13, 2022
    Inventor: Yong Xu
  • Portable tire inflator
    Patent number: D972604
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: December 13, 2022
    Inventor: Yixuan Xu
  • Pallet truck tiller module
    Patent number: D972806
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: December 13, 2022
    Inventors: Yu Jiandong, Lin Zuqian, Xu Minghui, Huang Chao, Ma Qichen
  • Pallet truck tiller module
    Patent number: D972807
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: December 13, 2022
    Inventors: Yu Jiandong, Lin Zuqian, Xu Minghui, Huang Chao, Ma Qichen