Patents by Inventor Xiaowei FENG

Xiaowei FENG 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: 11796443
    Abstract: The present invention discloses a method for isolating placental trophoblast cells from cervical exfoliated cells of a pregnant woman. Based on a specific antigen or combination expressed on the surface or inside of specific trophoblast cells, the designed microfluidic sorting chip or flow cytometer is used in the method to perform cell sorting of a cell suspension of a placental trophoblast sample, thus obtaining isolated and purified placental trophoblast cells. Compared with conventional methods, the method of the present invention has the advantages of non-invasively obtaining specimens and good specificity. Moreover, the method causes low risk of infection and abortion, allows earlier sampling time and can achieve the synchronous labeling of a plurality of antigens as well as identification and sorting of characteristic fluorescence signals; and the method has greatly improved accuracy and higher reliability and broader coverage area of detection results.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: October 24, 2023
    Assignees: GUANGZHOU HYBRIBIO MEDICINE TECHNOLOGY LTD., GUANGDONG HYBRIBIO BIOTECH CO., LTD.
    Inventors: Yan Zheng, Jiayan Ma, Xiaowei Feng, Mengyu Liu, Peixuan Chen, Zhisheng Guan, Longxu Xie, Yiyuan Ge
  • Publication number: 20230228667
    Abstract: The present invention discloses a method for isolating placental trophoblast cells from cervical exfoliated cells of a pregnant woman. Based on a specific antigen or combination expressed on the surface or inside of specific trophoblast cells, the designed microfluidic sorting chip or flow cytometer is used in the method to perform cell sorting of a cell suspension of a placental trophoblast sample, thus obtaining isolated and purified placental trophoblast cells. Compared with conventional methods, the method of the present invention has the advantages of non-invasively obtaining specimens and good specificity. Moreover, the method causes low risk of infection and abortion, allows earlier sampling time and can achieve the synchronous labeling of a plurality of antigens as well as identification and sorting of characteristic fluorescence signals; and the method has greatly improved accuracy and higher reliability and broader coverage area of detection results.
    Type: Application
    Filed: March 16, 2022
    Publication date: July 20, 2023
    Applicants: GUANGZHOU HYBRIBIO MEDICINE TECHNOLOGY LTD., GUANGDONG HYBRIBIO BIOTECH CO., LTD.
    Inventors: Yan ZHENG, Jiayan MA, Xiaowei FENG, Mengyu LIU, Peixuan CHEN, Zhisheng GUAN, Longxu XIE, Yiyuan GE
  • Patent number: 10169386
    Abstract: Devices and methods are provided for processing network nodes. For example, a sorting request is detected; one or more first network nodes to be sorted are acquired corresponding to the sorting request; a first characteristic matrix is constructed based on at least information associated with the first network nodes; association information between the first network nodes is acquired; a sparse matrix is constructed based on at least information associated with the association information between the first network nodes; iterative multiplication is performed on the sparse matrix and the first characteristic matrix to obtain a second characteristic matrix upon convergence; and the first network nodes are sorted based on at least information associated with the second characteristic matrix.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: January 1, 2019
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Xiaowei Feng, Jiaojiao Ren, Yan Xiong
  • Publication number: 20150127667
    Abstract: Devices and methods are provided for processing network nodes. For example, a sorting request is detected; one or more first network nodes to be sorted are acquired corresponding to the sorting request; a first characteristic matrix is constructed based on at least information associated with the first network nodes; association information between the first network nodes is acquired; a sparse matrix is constructed based on at least information associated with the association information between the first network nodes; iterative multiplication is performed on the sparse matrix and the first characteristic matrix to obtain a second characteristic matrix upon convergence; and the first network nodes are sorted based on at least information associated with the second characteristic matrix.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 7, 2015
    Inventors: Xiaowei Feng, Jiaojiao Ren, Yan Xiong
  • Publication number: 20140357355
    Abstract: A method for preventing game cheating may comprise acquiring a database associated with an online service, including feature data associated with a plurality of features; and for each of the plurality of features, generating a cheating probability distribution, based on the feature data, associates a value of the feature with a probability that a user account having a same feature value belongs to a cheating user. Further, the method may comprise receiving feature data of a current user account of the online service; determining whether the current user account belongs to a cheating user; and if yes, prohibiting the current user account from accessing the online service.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 4, 2014
    Inventors: Jiaojiao REN, Xiaowei FENG, Yan XIONG
  • Patent number: D886480
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: June 9, 2020
    Assignee: HANGZHOU JIJIAN HOUSEHOLD PRODUCTS CO., LTD.
    Inventor: Xiaowei Feng
  • Patent number: D907936
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: January 19, 2021
    Assignee: Zhejiang Sharing Space Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D929757
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 7, 2021
    Assignee: Zhejiang Sharing Space Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D931640
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: September 28, 2021
    Assignee: Zhejiang Sharing Space Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D950258
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: May 3, 2022
    Assignee: Zhejiang Sharing Space Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D955128
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: June 21, 2022
    Assignee: Hangzhou Points And Lines Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D959867
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: August 9, 2022
    Assignee: Zhejiang Sharing Space Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D982336
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: April 4, 2023
    Assignee: Hangzhou Points And Lines Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D982337
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: April 4, 2023
    Assignee: Hangzhou Points and Lines Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D985954
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: May 16, 2023
    Inventor: Xiaowei Feng
  • Patent number: D987316
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: May 30, 2023
    Assignee: Hangzhou Points And Lines Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D988739
    Type: Grant
    Filed: May 8, 2021
    Date of Patent: June 13, 2023
    Assignee: Hangzhou Point & Line Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D990909
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: July 4, 2023
    Assignee: Hangzhou Point & Line Technology Co., Ltd.
    Inventor: Xiaowei Feng
  • Patent number: D1001526
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: October 17, 2023
    Assignee: Hangzhou Point & Line Technology Co., Ltd.
    Inventor: Xiaowei Feng