Patents by Inventor Zhefu Zhang

Zhefu 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: 20240299223
    Abstract: Embodiments of the present disclosure provide a collapsible wheelchair, including: a movable chassis; a chair; a chair backrest; at least one first folding mechanism, installed between the movable chassis and the chair; and at least one second folding mechanism, connected between the chair and the chair backrest; where, the at least one first folding mechanism and the at least one second folding mechanism are connected in series and both have a four-rod linkage structure, and when the collapsible wheelchair is switched from a folded state to an open state or from the open state to the folded state, the at least one first folding mechanism and the at least one second folding mechanism are configured to move simultaneously. The collapsible wheelchair provided by the present disclosure is convenient in terms of the operation and easy to operate.
    Type: Application
    Filed: May 16, 2024
    Publication date: September 12, 2024
    Inventors: Jianguo LI, Yongqiang LI, Jie LIU, Xiaodong WANG, Zhefu ZHANG, Canfeng LIU, Xiangcheng LIAO
  • Publication number: 20240293275
    Abstract: The present application provides a collapsible wheelchair, including a front support frame, a backrest bracket, a rear support frame and a bracket connecting rod, which are hinged with each other to form a first connecting rod mechanism; the seat connecting rod is hinged with the front support frame and a seat bracket respectively; the front support frame, the backrest bracket, the seat bracket and the seat connecting rod form a second connecting rod mechanism; a hinge point of the backrest bracket and the seat bracket is located above a central plane of the seat bracket.
    Type: Application
    Filed: May 9, 2024
    Publication date: September 5, 2024
    Inventors: Jianguo LI, Jie LIU, Xiaodong WANG, Hengjie TANG, Canfeng LIU, Zhefu ZHANG, Bofeng LIU, Shiwei JIANG
  • Patent number: 12016804
    Abstract: Embodiments of the present disclosure provide a collapsible wheelchair, including: a movable chassis; a chair; a chair backrest; at least one first folding mechanism, installed between the movable chassis and the chair; and at least one second folding mechanism, connected between the chair and the chair backrest; where, the at least one first folding mechanism and the at least one second folding mechanism are connected in series and both have a four-rod linkage structure, and when the collapsible wheelchair is switched from a folded state to an open state or from the open state to the folded state, the at least one first folding mechanism and the at least one second folding mechanism are configured to move simultaneously. The collapsible wheelchair provided by the present disclosure is convenient in terms of the operation and easy to operate.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: June 25, 2024
    Assignees: SHANGHAI BANGBANG ROBOTICS CO., LTD, Jiangsu BangBang Intelligent Technology Co., Ltd.
    Inventors: Jianguo Li, Yongqiang Li, Jie Liu, Xiaodong Wang, Zhefu Zhang, Canfeng Liu, Xiangcheng Liao
  • Publication number: 20240040242
    Abstract: The present disclosure provides devices for imaging biological substrates and methods of using same to obtain images of biological substrates.
    Type: Application
    Filed: July 28, 2023
    Publication date: February 1, 2024
    Inventors: Diping Che, Lipo Xu, Sanmen Liu, Yanzhou Kang, Zhefu Zhang
  • Publication number: 20240035977
    Abstract: The present disclosure provides bio-imaging devices including multiple, modular channels for imaging biological substrates, and methods of using same to obtain mono- or multi-channel images of biological substrates.
    Type: Application
    Filed: July 28, 2023
    Publication date: February 1, 2024
    Inventors: Diping Che, Wei Ding, Kun Li, Yuming Zhang, Zhefu Zhang
  • Publication number: 20230085749
    Abstract: Embodiments of the present disclosure provide a collapsible wheelchair, including: a movable chassis; a chair; a chair backrest; at least one first folding mechanism, installed between the movable chassis and the chair; and at least one second folding mechanism, connected between the chair and the chair backrest; where, the at least one first folding mechanism and the at least one second folding mechanism are connected in series and both have a four-rod linkage structure, and when the collapsible wheelchair is switched from a folded state to an open state or from the open state to the folded state, the at least one first folding mechanism and the at least one second folding mechanism are configured to move simultaneously. The collapsible wheelchair provided by the present disclosure is convenient in terms of the operation and easy to operate.
    Type: Application
    Filed: November 23, 2022
    Publication date: March 23, 2023
    Inventors: Jianguo LI, Yongqiang Li, Jie Liu, Xiaodong Wang, Zhefu Zhang, Canfeng Liu, Xiangcheng Liao
  • Publication number: 20210181112
    Abstract: The present disclosure provides devices and methods enabling the analysis of biomolecules. In some embodiments, the biomolecules may be DNA, RNA, protein, peptide, small molecule, catalyst, precursor, nucleotide, antibodies, or other biomolecules of interest.
    Type: Application
    Filed: February 2, 2021
    Publication date: June 17, 2021
    Inventors: Diping Che, Zhefu Zhang
  • Patent number: 10989662
    Abstract: The present disclosure provides devices and methods enabling the analysis of biomolecules. In some embodiments, the biomolecules may be DNA, RNA, protein, peptide, small molecule, catalyst, precursor, nucleotide, antibodies, or other biomolecules of interest.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: April 27, 2021
    Assignee: Azure Biosystems, Inc.
    Inventors: Diping Che, Zhefu Zhang
  • Publication number: 20190226993
    Abstract: The present disclosure provides devices and methods enabling the analysis of biomolecules. In some embodiments, the biomolecules may be DNA, RNA, protein, peptide, small molecule, catalyst, precursor, nucleotide, antibodies, or other biomolecules of interest.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 25, 2019
    Inventors: Diping Che, Zhefu Zhang
  • Patent number: 10281402
    Abstract: The present disclosure provides devices and methods enabling the analysis of biomolecules. In some embodiments, the biomolecules may be DNA, RNA, protein, peptide, small molecule, catalyst, precursor, nucleotide, antibodies, or other biomolecules of interest.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: May 7, 2019
    Assignee: Azure Biosystems, Inc.
    Inventors: Diping Che, Zhefu Zhang
  • Publication number: 20190112170
    Abstract: The present disclosure provides cases comprising a lift mechanism, kits comprising a case and an instrument, and methods of using same.
    Type: Application
    Filed: October 16, 2018
    Publication date: April 18, 2019
    Inventors: Diping Che, Zhefu Zhang
  • Publication number: 20180209908
    Abstract: The present disclosure provides devices and methods enabling the analysis of biomolecules. In some embodiments, the biomolecules may be DNA, RNA, protein, peptide, small molecule, catalyst, precursor, nucleotide, antibodies, or other biomolecules of interest.
    Type: Application
    Filed: January 26, 2018
    Publication date: July 26, 2018
    Inventors: Diping Che, Zhefu Zhang
  • Patent number: D998509
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: September 12, 2023
    Inventors: Jianguo Li, Zhefu Zhang, Jie Liu, Hengjie Tang, Xiaodong Wang
  • Patent number: D1049943
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: November 5, 2024
    Assignee: Jiangsu Bangbang Intelligent Technology Co., Ltd.
    Inventors: Jianguo Li, Zhefu Zhang, Jie Liu, Xiaodong Wang, Yongqiang Li
  • Patent number: D1069656
    Type: Grant
    Filed: August 11, 2023
    Date of Patent: April 8, 2025
    Inventors: Jianguo Li, Zhefu Zhang, Xianyu Su