Patents by Inventor Xuejun Zhang

Xuejun 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).

  • Publication number: 20200326278
    Abstract: A sensing apparatus for detecting at least one target molecule in a gaseous medium is provided, comprising an optical fiber having a core with a tilted grating, and a coating assembly. The coating assembly has a composite film layer having an outer surface in direct contact with the gaseous medium, and contains at least two compositions mixed with one another therein, which include one or more surface plasmon resonance (SPR)-active compositions and one or more reacting compositions that are reversibly reactive to the at least one target molecule. Depending on different reacting compositions, the sensing apparatus can detect various target gas molecules such as hydrogen, ammonia, methane, and formaldehyde, etc. The sensing apparatus has relatively fast response time and high resistance to deactivation. A sensing system based on the sensing apparatus, a manufacturing method of the sensing apparatus, and a detection method using the sensing system, are further provided.
    Type: Application
    Filed: June 10, 2020
    Publication date: October 15, 2020
    Applicant: JINAN UNIVERSITY
    Inventors: Tuan Guo, Christophe Caucheteur, Fu Liu, Xuejun Zhang, Shunshuo Cai
  • Patent number: 10767058
    Abstract: Corrosion inhibitor materials are provided that release active corrosion inhibitor compounds when they are most needed—in response to changes in conditions, including acid or basic pH, that cause corrosion or occur at the early stages of corrosion. The materials comprise particles that can be dispersed in paints and coatings for metals. The particles in some cases include ionic water-soluble anti-corrosion agents complexed to oppositely charged surfactants and entrapped in silica oxide or metal oxide gels.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 8, 2020
    Assignee: United States of America as Represented by the Administrator of NASA
    Inventors: Xuejun Zhang, Wenyan Li, Luz M. Calle
  • Publication number: 20200275022
    Abstract: This disclosure provides an automotive driving recorder for being installed on an automobile, comprising: a body; a first lens mounted on a front portion of the body, facing in the forward direction of an automobile when installed to record first videos; a second lens mounted on a rear portion of the body, facing in the backward direction of the automobile when installed to record second videos; a first sensor, mounted in the body for determining exposure settings of the first lens; and a second sensor, mounted in the body for determining exposure settings of the second lens independently from the first sensor.
    Type: Application
    Filed: September 6, 2018
    Publication date: August 27, 2020
    Inventors: Chao Shang, Pei Yang, Shichun Liu, Huihua Chen, Xuejun Zhang, Yangguang Zhao, Harry Han
  • Publication number: 20200231568
    Abstract: The present invention provides a compound of formula (I) or a pharmaceutical salt thereof, use, methods for its preparation are described.
    Type: Application
    Filed: August 28, 2018
    Publication date: July 23, 2020
    Inventors: Tianwei Ma, Liang Wu, Xuejun Zhang
  • Patent number: 10718711
    Abstract: A sensing apparatus, system, and use method for selective detection of a target molecule in a gaseous medium with a limit of detection of less than 50 ppm are provided. The sensing apparatus comprises an optical fiber having a core with a tilted grating, and a coating assembly that is both active to surface plasmon resonance (SPR) and reversibly reactive to the target molecule to allow for repeated detection. Upon a compatible light propagating in the optical fiber, surface plasmon waves at an interface between the coating assembly and the medium can be generated to thereby derive information of the target molecule. Signals from core mode optical waves can additionally be used as inherent reference to remove influences of fluctuations from environmental factors and input power level. There is at least one range of concentrations for the target molecule allowing for linear measurement. Multiplexing of a plurality of sensing apparatuses is also disclosed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: July 21, 2020
    Assignee: JINAN UNIVERSITY
    Inventors: Tuan Guo, Christophe Caucheteur, Fu Liu, Xuejun Zhang, Shunshuo Cai
  • Publication number: 20190379864
    Abstract: A vehicle monitoring apparatus is described, comprising: a vehicle state detector detecting whether the vehicle is in a parking state; a motion detection sensor detecting whether an object is moving relative to the vehicle; an image recorder recording image data relating to the surrounding environment of the vehicle; a touch sensor sensing whether the object is touching the vehicle; a main control unit configured to: start the motion detection sensor when the vehicle state detector detects that the vehicle is in a parking state, turn on the image recorder and the touch sensor when the motion detection sensor detects that an object is moving with respect to the vehicle, and trim the image data recorded during a predetermined time period when the touch sensor senses that the object is touching the vehicle, the predetermined time period comprising the duration of the object being in touch with the vehicle; and a storage storing the trimmed image data.
    Type: Application
    Filed: November 17, 2017
    Publication date: December 12, 2019
    Inventors: Xuejun Zhang, Xiaobo Zhang
  • Patent number: 10428074
    Abstract: A pyrrole six-membered heteroaryl ring derivative, and the medicinal uses thereof are described. Specifically, the pyrrole six-membered heteroaryl ring derivative is a compound of formula (I), wherein the variable groups are as described in the specification.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: October 1, 2019
    Assignees: Jiangsu Hengrui Medicine Co., Ltd., Shanghai Hengrui Pharmaceutical Co., Ltd.
    Inventors: Xuejun Zhang, Qing Dong, Bonian Liu, Yaoping Zhu, Xiaotao Li, Jiong Lan
  • Patent number: 10171167
    Abstract: The present disclosure relates to a multimedia network data processing system, comprising: a head-end switch, which transmits multimedia network data of the data that is sent from a server to a terminal device to a head-end network processor, wherein the multimedia network data is multimedia network data based on the TCP/HTTP protocol; a head-end network processor, which encapsulates the multimedia network data to form a UDP packet and sends the UDP packet to a unidirectional broadcasting optical fiber network; and a data processing module, which receives the UDP packet from the unidirectional broadcasting optical fiber network and decapsulates the UDP packet to obtain the multimedia network data based on the TCP/HTTP protocol for the terminal device to play. A video-on-demand service based on the TCP/HTTP protocol can be realized on the basis of the existing network systems in which the unidirectional channel and the bidirectional channel are separated.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: January 1, 2019
    Assignee: Beijing JiShi HuiTong Technology Co., Ltd.
    Inventors: Xuejun Zhang, Getu Zhaoer, Shengjie Wang, Jie Ouyang
  • Patent number: 10129749
    Abstract: A method and device for acquiring a response message, a method and device for routing the response message, and a system for acquiring the response message and routing the response message are disclosed. The method includes steps that: a source node sends a service request message to a second group of nodes via a first group of DRA nodes; and the source node acquires the service response message returned by the destination node via the second group of DRA nodes.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 13, 2018
    Assignee: ZTE CORPORATION
    Inventors: Xuejun Zhang, Jianxiang Wang, Rong Song, Jin Zhang, Yijun Guo
  • Publication number: 20180234187
    Abstract: The present disclosure relates to a multimedia network data processing system, comprising: a head-end switch, which transmits multimedia network data of the data that is sent from a server to a terminal device to a head-end network processor, wherein the multimedia network data is multimedia network data based on the TCP/HTTP protocol; a head-end network processor, which encapsulates the multimedia network data to form a UDP packet and sends the UDP packet to a unidirectional broadcasting optical fiber network; and a data processing module, which receives the UDP packet from the unidirectional broadcasting optical fiber network and decapsulates the UDP packet to obtain the multimedia network data based on the TCP/HTTP protocol for the terminal device to play. A video-on-demand service based on the TCP/HTTP protocol can be realized on the basis of the existing network systems in which the unidirectional channel and the bidirectional channel are separated.
    Type: Application
    Filed: October 26, 2017
    Publication date: August 16, 2018
    Inventors: Xuejun Zhang, Getu Zhaoer, Shengjie Wang, Jie Ouyang
  • Publication number: 20180222912
    Abstract: A pyrrole six-membered heteroaryl ring derivative, and the medicinal uses thereof are described. Specifically, the pyrrole six-membered heteroaryl ring derivative is a compound of formula (I), wherein the variable groups are as described in the specification.
    Type: Application
    Filed: March 22, 2018
    Publication date: August 9, 2018
    Inventors: Xuejun ZHANG, Qing DONG, Bonian LIU, Yaoping ZHU, Xiaotao LI, Jiong LAN
  • Publication number: 20170303124
    Abstract: A method and device for acquiring a response message, a method and device for routing the response message, and a system for acquiring the response message and routing the response message are disclosed. The method includes steps that: a source node sends a service request message to a second group of nodes via a first group of DRA nodes; and the source node acquires the service response message returned by the destination node via the second group of DRA nodes.
    Type: Application
    Filed: January 30, 2015
    Publication date: October 19, 2017
    Applicant: ZTE Corporation
    Inventors: Xuejun ZHANG, Jianxiang WANG, Rong SONG, Jin ZHANG, Yijun GUO
  • Patent number: 9611435
    Abstract: The present invention relates to a method for the selective hydrogenation of an unsaturated compound, particularly a method in an unsaturated compound or a mixture containing unsaturated compounds for increase of the light sulphides weight, hydrogenation of a polyunsaturated compound and isomerization of a monounsaturated compound. The method uses a supported catalyst. The supported catalyst contains at least one Group VIB non-noble metal oxide and at least one Group VIII non-noble metal oxide deposited on a carrier; and the catalyst has an optimized acid distribution on the surface of the catalyst, and more preferably has an optimized Group VIII/VIB metal ratio and a Group VIII non-noble metal density per unit of catalyst surface area.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: April 4, 2017
    Assignee: Petrochina Company Limited
    Inventors: Xuejun Zhang, Guanjing Wu, Pingyi Wu, Xiaoliang Yuan, Yuandong Hou, Yin Zhang, Qinfeng Zhao, Shuqin Wang, Kunhong Liu
  • Publication number: 20170044171
    Abstract: Intermediate compounds used in the preparation of pyrrole six-membered heteroaryl ring derivatives are disclosed. In particular, compounds of formula (IB) are disclosed. The compounds of formula (IB) are used in the synthesis of Janus kinase (JAK) inhibitors. Substituents in formula (IB) have the same definitions as in the description.
    Type: Application
    Filed: November 1, 2016
    Publication date: February 16, 2017
    Inventors: Xuejun ZHANG, Qing DONG, Bonian LIU, Yaoping ZHU, Xiaotao LI, Jiong LAN
  • Patent number: 9527851
    Abstract: The present invention relates to a pyrrole six-membered heteroaryl ring derivative, the preparation method therefor, and the medicinal uses thereof. Specifically, the present invention relates to a new pyrrole six-membered heteroaryl ring derivative as represented by formula (I), the preparation method therefor, a medicinal composition comprising the derivative, and a therapeutic method using same, and, in particular, the uses as a JAK inhibitor and an immunosuppressor. Substituents in formula (I) have the same definitions as in the description.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: December 27, 2016
    Assignees: Jiangsu Hengrui Medicine Co., Ltd., Shanghai Hengrui Pharmaceutical Co., Ltd.
    Inventors: Xuejun Zhang, Qing Dong, Bonian Liu, Yaoping Zhu, Xiaotao Li, Jiong Lan
  • Patent number: 9438267
    Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: September 6, 2016
    Assignee: Innophase, Inc.
    Inventors: Xuejun Zhang, Yang Xu
  • Patent number: 9422486
    Abstract: The present invention relates to a selective hydrogenation catalyst for an unsaturated compound. The supported catalyst contains at least one Group VIB non-noble metal oxide and at least one Group VIII non-noble metal oxide deposited on a carrier; and the catalyst has an optimized acid distribution on the surface of the catalyst, and more preferably has an optimized Group VIII/VIB metal ratio and a Group VIII non-noble metal density per unit of catalyst surface area. Using the catalyst of the present invention can have the following advantages: the weight increase of light sulphides in an unsaturated compound or a mixture containing unsaturated compounds, the hydrogenation of a polyunsaturated compound, the isomerization of a monounsaturated compound, high operation flexibility and a significant improvement in the effects of a hydrogenation treatment.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: August 23, 2016
    Assignee: PetroChina Company Limited
    Inventors: Xuejun Zhang, An Ma, Xiaoliang Yuan, Yuandong Hou, Honglei Sun, Pingyi Wu, Yin Zhang, Jiarui Piao
  • Publication number: 20160087645
    Abstract: A DAC using current mirrors suitable for use in a modulator. Embodiments include a current-generating circuit to provide an information signal; a bias current source; a current mirror having a mirror input transistor connected to the current generating circuit and the bias current source, and being driven by the bias current and the varying current signal and having a corresponding varying voltage signal at a control terminal; a signal shaping filter interposed between the mirror input transistor and an output mirror transistor configured to limit a bandwidth of the varying voltage signal; the output mirror transistor configured to generate a band-limited varying current signal and a mirrored bias current; and, a mirrored bias current reduction circuit connected to the output mirror transistor configured to reduce the mirrored bias current.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 24, 2016
    Inventors: Xuejun Zhang, Yang Xu
  • Patent number: D795162
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: August 22, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Jin Cherl Kwon, Xuejun Zhang
  • Patent number: D869629
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 10, 2019
    Assignee: SHENZHEN PUREMATE TECHNOLOGY CO., LTD.
    Inventors: Puxuan Li, Fangsheng Yan, Weiguang Wang, Xuejun Zhang, Jiesheng Mei