Patents by Inventor Lijun Zhang
Lijun 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).
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Patent number: 11982636Abstract: Provided are a method and a device for acquiring a temperature and a computer-readable storage medium. The method for acquiring a temperature includes: building a temperature acquisition model, wherein the temperature acquisition model is configured to acquire, based on an operating parameter of the radioactive substance treatment system input to the temperature acquisition model, a temperature of different parts of the radioactive reactant in the radioactive substance treatment system under a condition of the parameter; inputting a current operating parameter of the radioactive substance treatment system into the temperature acquisition model during the treatment for the radioactive substance; and acquiring a current temperature of different parts of the radioactive reactant in the radioactive substance treatment system output by the temperature acquisition model.Type: GrantFiled: June 17, 2022Date of Patent: May 14, 2024Assignee: China Institute of Atomic EnergyInventors: Shengdong Zhang, Dongdong Zhu, Yusong Li, Dongsheng Qie, Liang Xian, Runci Wang, Lijun Liu
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Patent number: 11984894Abstract: A system and a method for generating an arbitrary waveform of a microwave photon based on optical frequency tuning are provided. The system includes an optical frequency comb, a first optical distribution unit, a first photoelectric conversion unit, a frequency-shift drive circuit, and an optical frequency doubling/dividing unit, an optical frequency-shift combining optical circuit, a second photoelectric conversion unit, and a second electrical processing circuit. The optical frequency comb is used as the frequency source, with the features of high stability and low phase noise of the optical frequency comb, the arbitrary waveforms of microwave photons can be generated through optical frequency tuning control; the performance of the optical frequency comb is three orders of magnitude or more higher than that of the common microwave frequency sources, therefore, the waveforms with high-frequency, ultra-wideband, low phase noise, and high stability can be generated.Type: GrantFiled: January 3, 2023Date of Patent: May 14, 2024Assignee: CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION NO 44 RESEARCH INSTITUTEInventors: Hao Zhang, Yongchuan Xiao, Caibin Yu, Xu Liang, Lijun Sun
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Patent number: 11976891Abstract: The present invention relates to the field of fluid heat transfer, and discloses a heat transfer enhancement pipe as well as a cracking furnace and an atmospheric and vacuum heating furnace including the same. The heat transfer enhancement pipe (1) includes a pipe body (10) of tubular shape having an inlet (100) for entering of a fluid and an outlet (101) for said fluid to flow out; internal wall of the pipe body (10) is provided with a fin (11) protruding towards interior of the pipe body (10), the fin (11) spirally extends in an axial direction of the pipe body (10), wherein a height of the fin (11) gradually increases from one end in at least a part extension of the fin. The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.Type: GrantFiled: October 25, 2018Date of Patent: May 7, 2024Assignees: China Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical CorporationInventors: Guoqing Wang, Junjie Liu, Lijun Zhang, Cong Zhou, Zhaobin Zhang, Shasha Yang, Dongfa Shen, Xiaofeng Li, Shifang Yang, Zhiguo Du, Yonggang Zhang, Ying Shi, Jinghang Guo
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Publication number: 20240135069Abstract: The present disclosure provides a risk assessment method of water inrush in tunnels constructed in water-rich grounds. The method includes the following steps: simulating a tunnel excavation process by finite element software MIDAS GTS NX and fluid-structure interaction; according to a research method of control variables, analyzing effects of a groundwater level, an elastic modulus and advanced pipe shed grouting on the stability of surrounding rock, and improving an algorithm of a radial basis function (RBF) neural network using a Grey Relation Analysis (GRA)-based Partitioning Around Medoid (PAM) clustering algorithm to assess risks of water inrush occurring in Qingdao area.Type: ApplicationFiled: February 21, 2023Publication date: April 25, 2024Inventors: Yongjun ZHANG, Fei LIU, Huangshuai XIA, Bin GONG, Sijia LIU, Yingming WU, Qingsong WANG, Hongzhi LIU, Ruiquan LU, Mingdong YAN, Lijun ZHANG, Xiaoming GUAN, Pingan WANG, Shuguang LI, Dengfeng YANG, Weiguo ZHANG
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Patent number: 11961486Abstract: A display driving device configured to control a display panel including pixel units to display, includes: an over driver compensation module configured to, when a first polarity frame image is displayed, perform line over driver compensation on the pixel units based on line over driver compensation data corresponding to the first polarity frame image, to determine a target over driver grayscale of the pixel units; and to, when a second polarity frame image is displayed, perform line over driver compensation on the pixel units based on line over driver compensation data corresponding to the second polarity frame image, to determine a target over driver grayscale of the pixel units. The first and second polarity are opposite to each other, and the line over driver compensation data corresponding to the first polarity frame image is different from the line over driver compensation data corresponding to the second polarity frame image.Type: GrantFiled: October 28, 2021Date of Patent: April 16, 2024Assignees: Wuhan BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Lijun Xiao, Bing Li, Feng Jiang, Meng Feng, Mengchao Shuai, Hangyu Chen, Junmin Zhang
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Publication number: 20240120907Abstract: A system and a method for generating an arbitrary waveform of a microwave photon based on optical frequency tuning are provided. The system includes an optical frequency comb, a first optical distribution unit, a first photoelectric conversion unit, a frequency-shift drive circuit, and an optical frequency doubling/dividing unit, an optical frequency-shift combining optical circuit, a second photoelectric conversion unit, and a second electrical processing circuit. The optical frequency comb is used as the frequency source, with the features of high stability and low phase noise of the optical frequency comb, the arbitrary waveforms of microwave photons can be generated through optical frequency tuning control; the performance of the optical frequency comb is three orders of magnitude or more higher than that of the common microwave frequency sources, therefore, the waveforms with high-frequency, ultra-wideband, low phase noise, and high stability can be generated.Type: ApplicationFiled: January 3, 2023Publication date: April 11, 2024Inventors: HAO ZHANG, YONGCHUAN XIAO, CAIBIN YU, XU LIANG, LIJUN SUN
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Publication number: 20240119912Abstract: The present disclosure provides a driving method for a liquid crystal display panel and a non-transitory computer storage medium. The driving method includes: for the plurality of sub-pixels, adopting a first gray-level table for displaying a picture in other frame pictures other than a first frame picture in each of the plurality of predetermined periods, the first gray-level table including a plurality of first gray-level values; and adopting a second gray-level table for displaying a picture in the first frame picture in each of the plurality of predetermined periods, the second gray-level table including a plurality of second gray-level values.Type: ApplicationFiled: March 22, 2021Publication date: April 11, 2024Inventors: Hangyu CHEN, Lijun XIAO, Junmin ZHANG, Bing LI, Feng JIANG, Meng FENG, Mengchao SHUAI, Jianmin XIANG, Yun BAI
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Patent number: 11955061Abstract: Provided is a pixel driving circuit configured to provide a signal to a to-be-driven element. The pixel driving circuit includes: a current control sub-circuit, configured to transmit a current signal; a time length control sub-circuit, configured to transmit a time signal; and an output sub-circuit, electrically connected with the time length control sub-circuit and the current control sub-circuit, respectively; where the time length control sub-circuit is further configured to control the output sub-circuit to be turned on or off based on the time signal; the output sub-circuit is configured to, when turned on, control a current applied to the to-be-driven element based on the current signal, where duration of two adjacent turn-ons of the output sub-circuit is same and duration of two adjacent turn-offs of the output sub-circuit is same.Type: GrantFiled: March 3, 2021Date of Patent: April 9, 2024Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Ning Cong, Xiaochuan Chen, Minghua Xuan, Can Zhang, Ming Yang, Lijun Yuan, Angran Zhang
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Publication number: 20240109919Abstract: The present invention disclosure also relates to a pharmaceutical composition that ccomprises the compound as an active ingredient.Type: ApplicationFiled: November 15, 2023Publication date: April 4, 2024Inventors: Qianjiao Yang, Song Shan, Lijun Xin, Desi Pan, Xiaoliang Wang, Yonglian Song, Yu Zhang, Huiyun Huang, Qi Wei, Zhibin Li, Xianping Lu
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Publication number: 20240101552Abstract: Provided is the carbonyl heterocyclic compound shown in formula (I) or a pharmaceutically acceptable salt thereof, capable of being used as a compound having a targeted lanthionine synthetase C-like protein 2 pathway and being used for the treatment of various conditions, including infectious diseases, autoimmune diseases, diabetes, and chronic inflammatory diseases.Type: ApplicationFiled: September 18, 2021Publication date: March 28, 2024Inventors: Chaoxin ZHANG, Guangxin XIA, Zhijun XIANG, Ying KE, Jiangsong LOU, Menghao ZHAO, Lijun HAO
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Publication number: 20240097320Abstract: An electronic device may have a phased antenna array. An antenna in the array may include a rectangular patch element with diagonal axes. The antenna may have first and second antenna feeds coupled to the patch element along the diagonal axes. The antenna may be rotated at a forty-five degree angle relative to other antennas in the array. The antenna may have one or two layers of parasitic elements overlapping the patch element. For example, the antenna may have a layer of coplanar parasitic patches separated by a gap. The antenna may also have an additional parasitic patch that is located farther from the patch element than the layer of coplanar parasitic patches. The additional parasitic patch may overlap the patch element and the gap in the coplanar parasitic patches. The antenna may exhibit a relatively small footprint and minimal mutual coupling with other antennas in the array.Type: ApplicationFiled: November 28, 2023Publication date: March 21, 2024Inventors: Jiangfeng Wu, Lijun Zhang, Mattia Pascolini, Siwen Yong, Yi Jiang
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Patent number: 11936433Abstract: The present disclosure relates to the field of microwave and optoelectronic technologies, and in particular to an integrated microwave photon transceiving front-end for a phased array system, including: a ceramic substrate, on which a control integrated circuit, a silicon-based photonic integrated chip, a first amplifying chipset, a second amplifying chipset, and a microwave switch chipset are carried. The control integrated circuit is configured to control the silicon-based photonic integrated chip and the microwave switch chipset by means of an input control signal. The silicon-based photonic integrated chip is connected at one end with an input/output optical fiber, and at the other end with the first amplifying chipset and the second amplifying chipset. The two amplifying chipsets are connected to the microwave switch chipset respectively, and the microwave switch chipset is further connected with a phased array antenna.Type: GrantFiled: April 22, 2020Date of Patent: March 19, 2024Assignee: CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION NO. 44 RESEARCH INSTITUTEInventors: Yu Zhang, Xu Liang, Jing Xu, Lijun Sun
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Patent number: 11927491Abstract: A self-calibration detection device and a temperature demodulation method oriented to a fiber Raman temperature sensing system. The self-calibration detection device comprises a fiber Raman thermodetector, thermostatic baths, a multi-mode sensing fiber, and a multi-mode reflector. The fiber Raman thermodetector comprises a pulsed laser whose output end is connected to the input end of a WDM. Two output ends of the WDM are respectively connected to input ends of a first and second APDs. Output ends of the first and second APDs are respectively connected to input ends of a first and second LNAs. Output ends of the first and second LNAs are connected to the input end of a data acquisition card whose output end is connected with the input end of a computer. The temperature demodulation method can solve the problems of low temperature measuring accuracy, lower temperature measurement stability and low temperature measurement efficiency.Type: GrantFiled: May 5, 2019Date of Patent: March 12, 2024Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Mingjiang Zhang, Jian Li, Jianzhong Zhang, Lijun Qiao, Baoqiang Yan, Yang Xu, Baoquan Jin, Dong Wang, Yu Wang, Yuncai Wang
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Patent number: 11923621Abstract: An electronic device may be provided with a phased antenna array on an antenna module. The array may include low band antennas and high band antennas that radiate at frequencies greater than 10 GHz. The module may include antenna layers, transmission line layers, and ground traces that separate the antenna layers from the transmission line layers. The low band antennas and the high band antennas may have radiators patterned onto the antenna layers. The radiators may be fed by transmission lines on the transmission line layers. The antenna layers may have a dielectric permittivity that is greater than the dielectric permittivity of the transmission line layers. This may serve to reduce the lateral footprint of the low band and high band antennas, which allows the antennas to be interleaved along a common linear axis in the phased antenna array, thereby minimizing the lateral footprint of the antenna module.Type: GrantFiled: June 3, 2021Date of Patent: March 5, 2024Assignee: Apple Inc.Inventors: Jiangfeng Wu, Siwen Yong, Simon G. Begashaw, Yi Jiang, Lijun Zhang
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Patent number: 11894608Abstract: An electronic device may have a phased antenna array. An antenna in the array may include a rectangular patch element with diagonal axes. The antenna may have first and second antenna feeds coupled to the patch element along the diagonal axes. The antenna may be rotated at a forty-five degree angle relative to other antennas in the array. The antenna may have one or two layers of parasitic elements overlapping the patch element. For example, the antenna may have a layer of coplanar parasitic patches separated by a gap. The antenna may also have an additional parasitic patch that is located farther from the patch element than the layer of coplanar parasitic patches. The additional parasitic patch may overlap the patch element and the gap in the coplanar parasitic patches. The antenna may exhibit a relatively small footprint and minimal mutual coupling with other antennas in the array.Type: GrantFiled: May 23, 2022Date of Patent: February 6, 2024Assignee: Apple Inc.Inventors: Jiangfeng Wu, Lijun Zhang, Mattia Pascolini, Siwen Yong, Yi Jiang
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Publication number: 20240012254Abstract: The disclosed system may include a support structure, a lens mounted to the support structure, where the lens includes at least one conductive layer that includes conductive material, and an antenna disposed on the support structure within a specified maximum distance from the lens. Various characteristics of the lens or the antenna may be modified to reduce coupling between the antenna and the layer of conductive material in the lens. Various other wearable devices, apparatuses, and methods of manufacturing are also disclosed.Type: ApplicationFiled: July 11, 2022Publication date: January 11, 2024Inventors: Javier Rodriguez De Luis, Liang Han, Lijun Zhang, Chia-Ching Lin, Meijiao Li, Jasmine Soria Sears
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Publication number: 20240002401Abstract: A novel imidazothiazole compound as an Autotaxin inhibitor, a pharmaceutical composition including the compound, and a use thereof in a treatment of a disease with a pathological feature of Autotaxin overexpression in a mammal is provided, wherein the compound has a structure of formula (I), or a pharmaceutically acceptable salt, hydrate, solvate, stereoisomer, tautomer, nitrogen oxide, metabolite, prodrug, or mixture thereof; wherein each of R1a, R1c, R2, R3, R6, Cy, Y, Z, and t is defined as described in the present disclosure.Type: ApplicationFiled: November 15, 2021Publication date: January 4, 2024Inventors: Qingan ZOU, Jiancun ZHANG, Yanwei CHEN, Lijun ZHANG, Ning KANG, Chen GUO
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Patent number: 11862838Abstract: An electronic device may include a curved cover layer and an antenna. The antenna may include a ground and a resonating element on a curved surface of a substrate. The curved surface may have a curvature that matches that of the cover layer. The resonating element may include first, second, and third arms fed by a feed. The first arm and a portion of the ground may form a loop antenna resonating element. The second arm and the first arm may form an inverted-F antenna resonating element, where a portion of the first arm forms a return path to the antenna ground for the inverted-F antenna resonating element. A gap between the first and second arms may form a distributed capacitance. The third arm may form an L-shaped antenna resonating element. The antenna may have a wide bandwidth from below 2.4 GHz to greater than 9.0 GHz.Type: GrantFiled: April 17, 2020Date of Patent: January 2, 2024Assignee: Apple Inc.Inventors: Lijun Zhang, Jiangfeng Wu, Mattia Pascolini, Siwen Yong, Yi Jiang
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Publication number: 20230390747Abstract: Disclosed is a catalyst useful for producing organic amines by catalytic amination, its preparation and application thereof, wherein the catalyst comprises an inorganic porous carrier containing aluminum and/or silicon and an active metal component supported on the carrier, the active metal component comprises at least one metal selected from the group consisting of Group VIII and Group IB metals, and the carrier has an ammonia adsorption capacity of 0.25 to 0.65 mmol/g, as measured by NH3-TPD test. The catalyst has an improved performance, when used for producing organic amines by catalytic amination.Type: ApplicationFiled: October 26, 2021Publication date: December 7, 2023Inventors: Baoliang TIAN, Guoqi TANG, Liangyu XIANG, Xiaorong ZHANG, Guoqing WANG, Hui PENG, Yi YANG, Lijun ZHANG, Chao SONG, Jianzhun JIANG, Yi MAN
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Publication number: 20230391744Abstract: A novel tetrahydronaphthalene compound is provided, or a stereoisomer, a solvate, a pharmaceutically acceptable salt thereof, or a pharmaceutical composition including the compound, and a use of the compound or the composition for preparing a medicament in prevention and/or treatment of a central nervous system disease, wherein the compound has a structure of formula (I), wherein each of X, Y, Z, W and R is defined as described in the present disclosure.Type: ApplicationFiled: October 26, 2021Publication date: December 7, 2023Inventors: Deyao LI, Yiqian ZHOU, Qi GUO, Huajin YOU, Lijun ZHANG, Jiancun ZHANG