Patents by Inventor Duanduan Li

Duanduan 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).

  • Patent number: 12262731
    Abstract: The present invention relates to a cut-stem separating and baffling apparatus and a primary air separation apparatus. The cut-stem separating and baffling apparatus includes a cut-stem separating baffle and struts; and the strut includes a base, a hanging panel, and an inner hexagon adjustment bolt, where the base includes a connecting segment and a support segment that are connected to each other, where the connecting segment is located above the cut-stem separating baffle, and the support segment is located behind the cut-stem separating baffle; the hanging panel includes a transverse hanging panel, and a longitudinal hanging panel, and a connecting hanging panel is disposed in a direction of the longitudinal hanging panel toward the cut-stem separating baffle, where the connecting hanging panel is connected to the cut-stem separating baffle; and the connecting segment of the base is connected to the transverse hanging panel using the inner hexagon adjustment bolt.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: April 1, 2025
    Assignee: Zhangjiakou Cigarette Factory Co., Ltd.
    Inventors: Zhen Wang, Shubin Jin, Peng Ji, Jianlong Zhang, Duanduan Li, Laihong Zhou, Huge Liu, Xiaohua Yang, Zhaohui Ma
  • Publication number: 20240390426
    Abstract: The present invention discloses a mesenchymal stem cell treated by at least two of cytokines IL4, IL21, and IL27, an exosome and use thereof. The present invention relates to the technical field of biomedicine. The treatment way is as follows: treating and stimulating a mesenchymal stem cell by stages with a complete medium containing the cytokine composition to obtain a capacitated mesenchymal stem cell; and then replacing with a basal medium for starvation treatment to obtain the capacitated exosome. The mesenchymal stem cell obtained after being pretreated with the cytokine composition and an exosome thereof provided in the present invention can exert a stronger immune modulating effect and thus, can be used for the treatment of immune diseases better.
    Type: Application
    Filed: June 5, 2024
    Publication date: November 28, 2024
    Applicant: SHENZHEN BEIKE BIOTECHNOLOLGY CO., LTD
    Inventors: Yan LIAO, Zeqin FU, Duanduan LI, Yulin YANG, Yinfu HUANG, Cheguo CAI, Junyuan HU
  • Publication number: 20240028926
    Abstract: The present disclosure provides a method for predicting safety interlock failure and a system for producing a roll package. The method for predicting safety interlock failure includes: obtaining, by a model for predicting safety interlock failure, real-time operation data of the production equipment to perform prediction; predicting, by the model for predicting safety interlock failure, whether the safety interlock device fails according to fault shutdown alarm information and non-fault shield alarm information in the real-time operation data, and generating a prediction result; and if the prediction result indicates that the safety interlock device fails, generating early warning information, wherein the fault shutdown alarm information is alarm information generated when the safety shield is opened to shut down the production equipment, and the non-fault shield alarm information is alarm information generated when the safety shield is opened or closed after the production equipment is shut down.
    Type: Application
    Filed: July 21, 2022
    Publication date: January 25, 2024
    Inventors: Wei Wang, Jin Wang, Duanduan Li, Fang Liu, Weichen Zhang, Jing Li, Chao Kong, Xin Zhao
  • Publication number: 20240008521
    Abstract: Disclosed is a device and method for reducing combustion cone fallout propensity and stabilizing loss of tobacco from ends. Firstly, the right installation positioning hole is moved rightwards to extend the distance of the separation zone. Meanwhile, the vibration mechanism is redesigned so that it is enabled to move toward the lower right of the material groove body. Therefore, there is enough space to install the separation screen in the separation zone. Finally, the separation screen is installed. The tobacco scraps are separated out when they pass through the separation screen, thus reducing cone dropping when the cigarette burns, stabilizing the amount of dropping tobacco at the end, and improving the smoking experience and recognition of customers with regard to cigarette products.
    Type: Application
    Filed: July 5, 2023
    Publication date: January 11, 2024
    Inventors: Zhen Wang, Peng Ji, Jianlong Zhang, Duanduan Li, Laihong Zhou, Zhaohui Ma, Jiansheng Yang, Xin Zhao, Huge Liu, Xiaojun Zhang, Yan Li, Xuena Song
  • Publication number: 20230148655
    Abstract: The present invention relates to a cut-stem separating and baffling apparatus and a primary air separation apparatus. The cut-stem separating and baffling apparatus includes a cut-stem separating baffle and struts; and the strut includes a base, a hanging panel, and an inner hexagon adjustment bolt, where the base includes a connecting segment and a support segment that are connected to each other, where the connecting segment is located above the cut-stem separating baffle, and the support segment is located behind the cut-stem separating baffle; the hanging panel includes a transverse hanging panel, and a longitudinal hanging panel, and a connecting hanging panel is disposed in a direction of the longitudinal hanging panel toward the cut-stem separating baffle, where the connecting hanging panel is connected to the cut-stem separating baffle; and the connecting segment of the base is connected to the transverse hanging panel using the inner hexagon adjustment bolt.
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Inventors: Zhen Wang, Shubin Jin, Peng Ji, Jianlong Zhang, Duanduan Li, Laihong Zhou, Huge Liu, Xiaohua Yang, Zhaohui Ma