Patents by Inventor Qingxia LI

Qingxia 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).

  • Publication number: 20200392129
    Abstract: Provided are four crystal forms, A, B, C and D, of demethyleneberberine hydrochloride, and a preparation method therefor, and further provided are X-ray powder diffraction characteristic absorption peaks, infrared absorption peaks and DSC spectra of the four crystal forms. The X-ray powder diffraction characteristic diffraction peaks of the crystal forms are at about 8.205°, 8.805°, 10.817°, 14.835°, 15.479°, 16.668°, 17.492°, 18.529°, 20.656°, 21.536°, 23.538°, 25.657°, 26.192°, and 28.808°. A preparation method for the four crystal forms of the demethyleneberberine hydrochloride is also involved. The preparation method has a simple process, a high yield and a low cost; and has a high product purity and a stable quality.
    Type: Application
    Filed: July 12, 2018
    Publication date: December 17, 2020
    Inventors: Yubin ZHANG, Yuanqiang ZHANG, Miao ZHANG, Qingxia LI
  • Patent number: 10768164
    Abstract: A method for fast detecting pavement asphalt and early warning based on infrared spectrum data. Infrared spectrum data of standard sample asphalt is collected by adopting an infrared spectrometer, to establish an infrared spectrum database of standard sample asphalt. The infrared spectrum database of the standard sample asphalt and basic asphalt information is introduced into a cloud server through a spectrum input module. A database-matching calculation method and a threshold value is set through a spectrum-matching analysis module. The infrared spectrum data and engineering information of the tested asphalt is collected and uploaded to a cloud platform for storage. A matching calculation between the uploaded data and the spectrograms in the infrared spectrum database of the standard sample asphalt through the cloud server is conducted. An asphalt matching result is outputted to a display terminal. An early-warning message is pushed by the cloud server if a test result is not-match.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: September 8, 2020
    Assignee: Ganzu Province Transportation Planning, Survey & Design Institute Co., Ltd.
    Inventors: Xiaomin Li, Jingzhuo Zhao, Dingbang Wei, Guohong Zhang, Fukui Zhang, Qiang Wei, Hui Wang, Qingxia Cao, Min Ding
  • Publication number: 20200132660
    Abstract: A method for fast detecting pavement asphalt and early warning based on infrared spectrum data. Infrared spectrum data of standard sample asphalt is collected by adopting an infrared spectrometer, to establish an infrared spectrum database of standard sample asphalt. The infrared spectrum database of the standard sample asphalt and basic asphalt information is introduced into a cloud server through a spectrum input module. A database-matching calculation method and a threshold value is set through a spectrum-matching analysis module. The infrared spectrum data and engineering information of the tested asphalt is collected and uploaded to a cloud platform for storage. A matching calculation between the uploaded data and the spectrograms in the infrared spectrum database of the standard sample asphalt through the cloud server is conducted. An asphalt matching result is outputted to a display terminal. An early-warning message is pushed by the cloud server if a test result is not-match.
    Type: Application
    Filed: October 30, 2018
    Publication date: April 30, 2020
    Inventors: Xiaomin Li, Jingzhuo Zhao, Dingbang Wei, Guohong Zhang, Fukui Zhang, Qiang Wei, Hui Wang, Qingxia Cao, Min Ding
  • Patent number: 10545128
    Abstract: The present invention discloses a device for measuring adsorption/desorption of contaminants onto surface bed sediments and a method of using the device. The measurement device includes a sediment sample disc, a sample holder, a reaction cylinder, a liquid collection cylinder, and a liquid circulating member from inside to outside, the liquid circulating member consisting of rubber pipes and a peristaltic pump.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: January 28, 2020
    Assignee: Hohai University
    Inventors: Hongwu Tang, Qingxia Li, Yang Xiao, Zhiwei Li, Saiyu Yuan
  • Publication number: 20200002400
    Abstract: Provided are a chimeric antigen receptor targeting CD20 antigen and a preparation method thereof. The extracellular antigen binding domain of the chimeric antigen receptor includes an antibody heavy chain variable region shown in SEQ ID NO: 7 or 9 or 33 and an antibody light chain variable region shown in SEQ ID NO: 11 or 13 or 35, and is capable of killing tumor cells.
    Type: Application
    Filed: February 8, 2018
    Publication date: January 2, 2020
    Applicants: CELLULAR BIOMEDICINE GROUP (SHANGHAI) LTD., CELLULAR BIOMEDICINE GROUP (WUXI) LTD.
    Inventors: Yihong YAO, Jiaqi HUANG, Shigui ZHU, Wei ZHU, Xin YAO, Zhiyuan LI, Li ZHANG, Lin ZHU, Anyun MA, Yutian WEI, Yanfeng LI, Qingxia WANG, Jiaping HE
  • Publication number: 20190212318
    Abstract: The present invention discloses a device for measuring adsorption/desorption of contaminants onto surface bed sediments and a method of using the device. The measurement device includes a sediment sample disc, a sample holder, a reaction cylinder, a liquid collection cylinder, and a liquid circulating member from inside to outside, the liquid circulating member consisting of rubber pipes and a peristaltic pump.
    Type: Application
    Filed: October 10, 2017
    Publication date: July 11, 2019
    Applicant: Hohai University
    Inventors: Hongwu TANG, Qingxia LI, Yang XIAO, Zhiwei LI, Saiyu YUAN
  • Patent number: 9515377
    Abstract: Embodiments of the present invention provide an antenna apparatus. The antenna apparatus includes multiple antennas, a switching unit, a grounding layer, connecting lines and a dielectric substrate. The antennas are configured to transmit and receive electromagnetic waves. The connecting lines are configured to connect the switching unit and the antennas. The switching unit is configured to selectively feed signals to the antennas through the connecting lines. The grounding layer serves as a reference of zero potential, and by setting the shape or size of the grounding layer and the distance from the grounding layer to the antennas, the grounding layer is further configured to restrain a transmitting direction of the electromagnetic waves transmitted by the antennas. The dielectric substrate is configured to allow the grounding layer to be printed thereon, and the dielectric substrate is further configured to allow the antennas, the switching unit and the connecting lines.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: December 6, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Long Zhang, Qingxia Li, Rong Rong, Yuan Zhou
  • Publication number: 20130335293
    Abstract: Embodiments of the present invention provide an antenna apparatus. The antenna apparatus includes multiple antennas, a switching unit, a grounding layer, connecting lines and a dielectric substrate. The antennas are configured to transmit and receive electromagnetic waves. The connecting lines are configured to connect the switching unit and the antennas. The switching unit is configured to selectively feed signals to the antennas through the connecting lines. The grounding layer serves as a reference of zero potential, and by setting the shape or size of the grounding layer and the distance from the grounding layer to the antennas, the grounding layer is further configured to restrain a transmitting direction of the electromagnetic waves transmitted by the antennas. The dielectric substrate is configured to allow the grounding layer to be printed thereon, and the dielectric substrate is further configured to allow the antennas, the switching unit and the connecting lines.
    Type: Application
    Filed: July 23, 2013
    Publication date: December 19, 2013
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Long ZHANG, Qingxia LI, Rong RONG, Yuan ZHOU