Patents by Inventor Jiao LIU
Jiao 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).
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Publication number: 20220187129Abstract: A silicon Fourier transform spectrometer and an optical spectrum reconstruction method are disclosed. The spectrometer includes a waveguide input coupler, cascaded optical switches, unbalanced subwavelength grating (SWG) waveguide pairs, and a germanium silicon detector, where the cascaded optical switches are connected through unbalanced SWG waveguide pairs. The state of the optical switches are adjusted to digitally configure the optical path, so as to constitute a series of unbalanced Mach-Zehnder interferometer (MZI) arrays with different optical path differences, to realize a Fourier transform spectrometer based on spatial heterodyne. The optical spectrum is reconstructed by using a compressed sensing algorithm.Type: ApplicationFiled: December 23, 2021Publication date: June 16, 2022Inventors: Liangjun LU, Junjie DU, Linjie ZHOU, Jianping CHEN, Jiao LIU
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Patent number: 11333826Abstract: A silicon- and optical phased array-based integrated optically adjustable delay line, comprising, an optical phased array transmitting unit, a slab waveguide transmitting unit, and an optical phased array receiving unit that are sequentially arranged. By the optical phase control transmitting unit, the phase difference between channels is regulated and controlled via a phase shifter to change a far-field interference light spot and form a wave beam with directivity to regulate and control an incident angle of an optical signal entering the slab waveguide, thus changing the propagation path length of the optical signal. Finally, the optical signal is received by a corresponding optical phased array receiving unit to obtain different delay amounts. Large adjustable delay amount is realized and the delay line has the advantages of simple structure and control and high integration level with high application value in optical communication and microwave photonic and optical signal processing.Type: GrantFiled: September 30, 2020Date of Patent: May 17, 2022Assignee: Shanghai Jiao Tong UniversityInventors: Linjie Zhou, Wensheng Shan, Weihan Xu, Liangjun Lu, Jianping Chen, Jiao Liu
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Publication number: 20220105189Abstract: The disclosure relates to the technical field of medicine and in particular to a polyethylene glycol conjugated drug of formula I or a pharmaceutically acceptable salt thereof. The disclosure further relates to a method for preparation and an intermediate of the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof, a pharmaceutical composition comprising the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof, and use of the polyethylene glycol conjugated drug or a pharmaceutically acceptable salt thereof in preparation of a medicament.Type: ApplicationFiled: June 3, 2019Publication date: April 7, 2022Inventors: Gaoquan LI, Dajun LI, Qian ZHANG, Xiaoling DING, Diedie LI, Lei HUANG, Jinping WAN, Yue LIU, Yusong WEI, Xiangwei YANG, Yongchen PENG, Jiao LIU, Jianhuan LI, Qiang LUO, Xi LIU, Bin WANG, Hui GONG, Yu CHEN, Yunjie JIANG, Zhongquan LIU, Kun XU, Jie LOU, Huiyu CHEN, Yue YANG, Yuanqiang WANG
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Publication number: 20210181310Abstract: A chip-scale silicon-based hybrid-integrated LiDAR system, wherein a transmitting end thereof sequentially comprises a narrow-linewidth tunable laser source, a silicon-nitride-based beam splitter, a silicon-based phase shifter array and a silicon-nitride-based unidirectional transmitting antenna array w.r.t the optical path. Based on the principle of reciprocity of light propagation, the receiving end thereof sequentially comprises a silicon nitride unidirectional receiving antenna array, a silicon nitride beam splitter and a silicon-based coherent receiving module. It also comprises a backup system and an electric controller as the driver of the phase shifters and the processing module. Modules on the silicon platform and the silicon nitride platform are monolithic integrated in a multilayer sandwiched fashion by means of a tapered silicon/silicon nitride evanescent inter-layer coupler; and a gain chip in the tunable laser module and a silicon nitride waveguide are hybrid-integrated by horizontal coupling.Type: ApplicationFiled: February 8, 2021Publication date: June 17, 2021Inventors: Liangjun LU, Weihan XU, Linjie ZHOU, Jiao LIU, Jianping CHEN
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Publication number: 20210026068Abstract: A silicon- and optical phased array-based integrated optically adjustable delay line, comprising, an optical phased array transmitting unit, a slab waveguide transmitting unit, and an optical phased array receiving unit that are sequentially arranged. By the optical phase control transmitting unit, the phase difference between channels is regulated and controlled via a phase shifter to change a far-field interference light spot and form a wave beam with directivity to regulate and control an incident angle of an optical signal entering the slab waveguide, thus changing the propagation path length of the optical signal. Finally, the optical signal is received by a corresponding optical phased array receiving unit to obtain different delay amounts. Large adjustable delay amount is realized and the delay line has the advantages of simple structure and control and high integration level with high application value in optical communication and microwave photonic and optical signal processing.Type: ApplicationFiled: September 30, 2020Publication date: January 28, 2021Inventors: Linjie ZHOU, Wensheng SHAN, Weihan XU, Liangjun LU, Jianping CHEN, Jiao LIU
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Publication number: 20210018603Abstract: Integrated two-dimensional multi-beam LiDAR transmitter based on the Butler matrix, comprising an tunable laser array, a frequency modulated continuous wave modulator array, an N×N Butler optical matrix network, an N×M optical beam expanding network, an M-path phase shifter array, and an M-path two-dimensional LiDAR emitters.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Inventors: Liangjun LU, Chen ZHU, Linjie ZHOU, Jiao LIU, Jianping CHEN
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Publication number: 20210018599Abstract: A three-dimensional scanning LiDAR based on one-dimensional optical phased arrays comprises a transmitting end, a coherent receiving end and an incoherent receiving end, wherein the transmitting end, the coherent receiving end and the incoherent receiving end are all one-dimensional arrays. A phase control complexity of the three-dimensional scanning phased array is reduced, and a tunable laser with high cost and a grating array antenna with large crosstalk are avoided. The LiDAR provides pure solid-state three-dimensional scanning in speed and integration level and is highly practical.Type: ApplicationFiled: September 30, 2020Publication date: January 21, 2021Inventors: Liangjun Lu, Weihan Xu, Linjie Zhou, Jianping Chen, Jiao Liu
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Patent number: 10819262Abstract: The present invention discloses a power generation system including a double-fed induction generator, a power converter, and a controller. The double-fed induction generator includes a rotor and a stator coupled to a grid. The power converter includes a rotor side converter coupled to the rotor of the generator, a grid side converter coupled to the grid, and a DC bus coupled between the rotor side converter and the grid side converter. The controller includes a rotor side controller for controlling the rotor side converter and a grid side controller for controlling the grid side converter. The rotor side controller includes a compensator having a transfer function and configured to counter a negative resistance effect of the generator to suppress sub-synchronous oscillations. The present invention further discloses a system for suppressing sub-synchronous oscillations and a method for controlling operation of a power system.Type: GrantFiled: September 10, 2018Date of Patent: October 27, 2020Assignee: General Electric CompanyInventors: Yunjie Gu, Yuxiang Wang, Jiao Liu, Zhuohui Tan, David Smith, Wei Ren, Wuhua Li
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Patent number: 10348239Abstract: Multi-layered solar cell devices covered with partially transmissive graphic films. The multi-layered solar cell devices include at least one solar cell, a graphics layer over the solar cell, and a reflective layer. The reflective layer can be behind the solar cell for recycling light or between the partially transmissive graphic film and the solar cell for improved appearance. The multi-layered solar cell devices have a high efficiency and a customizable appearance.Type: GrantFiled: May 2, 2013Date of Patent: July 9, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Onur S. Yordem, Gilles J. B. Benoit, Jingfei Chen, Guanglei Du, Yan Yan Zhang, Jiao Liu, Bo Guo, Timothy J. Hebrink
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Publication number: 20190207598Abstract: A protection circuit for a controllable switch comprising a control terminal, a first terminal, and a second terminal having a lower electric potential than the first terminal, the protection device comprising: an active clamping module, coupled between the first terminal and the control terminal of the controllable switch, configured to clamp a first voltage across the first terminal and the second terminal; and a damping module, coupled to an output of the active clamping module and configured to damp oscillations of a second voltage across the control terminal and the second terminal. Embodiments of the present disclosure also relate to a protection method for a controllable switch.Type: ApplicationFiled: December 18, 2018Publication date: July 4, 2019Inventors: Hao Yu, Fan Zhang, Zhihui Yuan, Jiao Liu, Stefan Schroeder, Yingqi Zhang
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Publication number: 20190089279Abstract: The present invention discloses a power generation system including a double-fed induction generator, a power converter, and a controller. The double-fed induction generator includes a rotor and a stator coupled to a grid. The power converter includes a rotor side converter coupled to the rotor of the generator, a grid side converter coupled to the grid, and a DC bus coupled between the rotor side converter and the grid side converter. The controller includes a rotor side controller for controlling the rotor side converter and a grid side controller for controlling the grid side converter. The rotor side controller includes a compensator having a transfer function and configured to counter a negative resistance effect of the generator to suppress sub-synchronous oscillations. The present invention further discloses a system for suppressing sub-synchronous oscillations and a method for controlling operation of a power system.Type: ApplicationFiled: September 10, 2018Publication date: March 21, 2019Inventors: Yunjie GU, Yuxiang WANG, Jiao LIU, Zhuohui TAN, David SMITH, Wei REN, Wuhua LI
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Publication number: 20180128457Abstract: Disclosed in the present utility model is an LED light, comprising a light board and further comprising a connecting platform and an AC input end, wherein the connecting platform and the light board are snap-joined and conducting, and the AC input end is connected to the connecting platform in the direction perpendicular to the light board and conducting with the connecting platform. The light board and the connecting platform are fixed with a snap joint structure instead of tin soldering, and the AC input end is connected to the connecting platform in the direction perpendicular to the light board so that the three parts of the light board, the connecting platform and the AC input end of the LED light are convenient to assemble and disassemble and easy to maintain which are conducive to the reduction of use costs.Type: ApplicationFiled: March 9, 2017Publication date: May 10, 2018Applicant: Angeled Co., Ltd.Inventors: Youqing LIANG, Jiao LIU, Linzhi WEN
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Patent number: 9896734Abstract: Provided in the present invention is an asparaginic acid kinase, and the 340th amino acid residue in the position of the amino acid sequence of the asparaginic acid kinase corresponding to the amino acid sequence shown in SEQ ID NO: 2 is a non-aspartic acid. The asparaginic acid of the present invention can efficiently relieve the feedback inhibition of L-lysine, and can be effectively used for the production of L-lysine. Also provided in the present invention are host cells comprising genes coding the asparaginic acid kinase and a method for producing L-lysine using the host cells or the asparaginic acid kinase. The asparaginic acid kinase of the present invention or the host cells comprising the asparaginic acid kinase of the present invention is also used to produce L-threonine, L-methionine, L-isoleucine or L-valine. Also provided in the present invention is a method of producing L-aspartyl-4-yl phosphoric acid using the asparaginic acid kinase or the host cells.Type: GrantFiled: May 16, 2013Date of Patent: February 20, 2018Assignees: Cofco Biochemical (Anhui) Co., Ltd., Tianjin Institute of Industrial Biotechnology, Chinese Academy of SciencesInventors: Guojun Yue, Jibin Sun, Ping Zheng, Jiao Liu, Qinggang Li, Linghe Xia, Yongsheng Zhou, Hu Luo, Yong Zhou, Yun Man, Zongmei Lu, Yanhe Ma
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Patent number: 9758440Abstract: The method for catalytic methanation of synthesis gas includes the following steps: 1) feeding the synthesis gas into the bottom of a reactor of an upward concurrent flow transporting bed so as to adequately mix and preheat with methanation catalyst entering the bottom of the reactor until the activation temperature of the catalyst is reached and then the methanation reaction begins; and 2) after the methanation reaction, immediately passing the product gas and the catalyst grains outputted from the transporting bed into a gas-solid separator to perform a rapid separation so as to obtain the product gas.Type: GrantFiled: July 26, 2013Date of Patent: September 12, 2017Assignees: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES, China Kingsun Material Technology Co., LTDInventors: Guangwen Xu, Jiao Liu, Dianmiao Cui, Jian Yu
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Publication number: 20160371492Abstract: The present invention discloses a method and system for searching and killing a macro virus, which are applied in an enterprise edition virus searching and killing application. The method comprises: an enterprise edition client monitoring the operation of opening a document of a specific type, the document of a specific type comprising an office software document; when monitoring a request for opening a target document, intercepting the request and uploading the target document to an enterprise edition service end; the enterprise edition service end judging whether the target document contains a macro virus; and returning a processing instruction to the enterprise edition client according to the judgment result. By the method and system, the spreading of macro viruses inside an enterprise network can be withstood more effectively.Type: ApplicationFiled: June 4, 2014Publication date: December 22, 2016Inventor: Jiao LIU
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Publication number: 20160176774Abstract: The method for catalytic methanation of synthesis gas includes the following steps: 1) feeding the synthesis gas into the bottom of a reactor of an upward concurrent flow transporting bed so as to adequately mix and preheat with methanation catalyst entering the bottom of the reactor until the activation temperature of the catalyst is reached and then the methanation reaction begins; and 2) after the methanation reaction, immediately passing the product gas and the catalyst grains outputted from the transporting bed into a gas-solid separator to perform a rapid separation so as to obtain the product gas.Type: ApplicationFiled: July 26, 2013Publication date: June 23, 2016Inventors: Guangwen XU, Jiao LIU, Dianmiao CUI, Jian YU
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Publication number: 20150337346Abstract: Provided in the present invention is an asparaginic acid kinase, and the 340th amino acid residue in the position of the amino acid sequence of the asparaginic acid kinase corresponding to the amino acid sequence shown in SEQ ID NO: 2 is a non-aspartic acid. The asparaginic acid of the present invention can efficiently relieve the feedback inhibition of L-lysine, and can be effectively used for the production of L-lysine. Also provided in the present invention are host cells comprising genes coding the asparaginic acid kinase and a method for producing L-lysine using the host cells or the asparaginic acid kinase. The asparaginic acid kinase of the present invention or the host cells comprising the asparaginic acid kinase of the present invention is also used to produce L-threonine, L-methionine, L-isoleucine or L-valine. Also provided in the present invention is a method of producing L-aspartyl-4-yl phosphoric acid using the asparaginic acid kinase or the host cells.Type: ApplicationFiled: May 16, 2013Publication date: November 26, 2015Applicant: COFCO BIOCHEMICAL (ANHUI) CO. LTDInventors: Guojun YUE, Jibin SUN, Ping ZHENG, Jiao LIU, Qinggang LI, Linghe XIA, Yongsheng ZHOU, Hu LUO, Yong ZHOU, Yun MAN, Zongmei LU, Yanhe MA
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Patent number: 9166500Abstract: A power conversion system is disclosed including a DC bus for receiving DC power, a power converter for converting the DC power to AC power, and a controller. The controller includes an active power regulator for generating a phase angle command signal, a reactive power regulator for generating a voltage magnitude command, and an active power (P) and reactive power (Q) decoupling unit for decoupling interaction between the active and reactive power regulators. The PQ decoupling unit includes an active power compensation element and a reactive power compensation element. The active power compensation element is used for generating a phase angle compensation signal based on a reactive power error signal, to compensate the phase angle command signal. The reactive power compensation element is used for generating a voltage magnitude compensation signal based on an active power error signal, to compensate the voltage magnitude command signal.Type: GrantFiled: March 24, 2014Date of Patent: October 20, 2015Assignee: General Electric CompanyInventors: Xinhui Wu, Jiao Liu, Dan Hou, Xueqin Wu, Zhuohui Tan
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Publication number: 20150281264Abstract: a security data processing method comprises the following steps that: a security control server receives a data upload request from a terminal, and obtains file features and an identification code of the terminal included in the data upload request; the security control server judges whether the terminal is a trustable machine according to the identification code of the terminal, wherein the trustable machine is a terminal in which data is considered to be security data; if the terminal is judged as the trustable machine, the security control server obtains a real-time state of the terminal from a real-time state record table, and adds the uploaded file feature to a security database if the terminal is in a working state, and does not add the uploaded file feature to the security database if the terminal is in an idle state. The present invention also provides a security data processing system for implementing the forgoing method.Type: ApplicationFiled: September 27, 2013Publication date: October 1, 2015Inventors: Zhenbo Deng, Jiazhu Zhang, Ming Wen, Yu Li, Jiao Liu
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Patent number: D818174Type: GrantFiled: August 24, 2017Date of Patent: May 15, 2018Assignees: ANGELED CO., LTD., GUANGDONG UNILUMIN ENERGY SAVING TECHNOLOGY CO., LTD, UNILUMIN GROUP CO., LTD.Inventors: Changwei Wan, Jiao Liu, Jianghai Li, Qing Zhou