Patents by Inventor Xiquan Zhang

Xiquan 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: 20250257064
    Abstract: Disclosed is a trifluoromethyl-substituted sulfonamide BCL-2-selective inhibitor, in particular disclosed are a compound of formula I, a stereoisomer or a pharmaceutically acceptable salt thereof, a preparation method therefore, and a pharmaceutical composition thereof. Also disclosed are the uses of said compound and of a pharmaceutical composition comprising same for treating anti-apoptotic BCL-2-related diseases, such as cancer.
    Type: Application
    Filed: April 18, 2025
    Publication date: August 14, 2025
    Inventors: Fei Liu, Weiwei Feng, Bin Wang, Hongjiang Xu, Jinan Wang, Xiquan Zhang, Shanchun Wang, Yanlong Liu, Jianqing Zhang, Yiyan Yao, Xujing Tang, Wei Shi, Hongying Zhang, Yang Li, Song Tang, Yizhong Zhu, Limin Liu, Hongmei Gu, Ling Yang
  • Patent number: 12371431
    Abstract: Disclosed is a trifluoromethyl-substituted sulfonamide BCL-2-selective inhibitor, in particular disclosed are a compound of formula I, a stereoisomer or a pharmaceutically acceptable salt thereof, a preparation method therefor, and a pharmaceutical composition thereof. Also disclosed are the uses of said compound and of a pharmaceutical composition comprising same for treating anti-apoptotic BCL-2-related diseases, such as cancer.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 29, 2025
    Assignee: Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
    Inventors: Fei Liu, Weiwei Feng, Bin Wang, Hongjiang Xu, Jinan Wang, Xiquan Zhang, Shanchun Wang, Yanlong Liu, Jianqing Zhang, Yiyan Yao, Xujing Tang, Wei Shi, Hongying Zhang, Yang Li, Song Tang, Yizhong Zhu, Limin Liu, Hongmei Gu, Ling Yang
  • Patent number: 12358891
    Abstract: The present application relates to the field of medicine, and relates to crystals of quinoline derivatives, and in particular, to crystals of a quinoline derivative anhydride and a solvate, as well as a method for preparing the crystals, pharmaceutical compositions containing the crystals, and a use thereof in the field of medicine. The present application further provides a preparation method therefor, which has a high yield, has mild crystallization conditions, is suitable for industrial production, and may better meet the needs of the pharmaceutical industry.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: July 15, 2025
    Assignee: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Xiquan Zhang, Shanchun Wang, Wenjun Geng, Yanlong Liu, Huihui Zhang, Fei Liu, Shanliang Zhu, Xinlu Li, Rui Zhao, Hongmei Gu
  • Publication number: 20250223347
    Abstract: Disclosed are antigen binding constructs targeting HER2 and uses thereof. Specifically provided is an antibody comprising a monovalent antigen-binding fragment that specifically binds to the HER2 ECD4 antigen on HER2-expressing cells, with the heavy chain variable region containing a mutation at position 30 and the light chain variable region containing a mutation at position 53, both according to Kabat numbering, a nucleic acid that encodes the same, a vector that comprises said nucleic acid, a cell that comprises an isolated nucleic acid of said vector, and a pharmaceutical composition that comprises the foregoing. Further provided are uses thereof in aspects such as treating subjects who suffer from HER2-expressing tumors, killing HER2-expressing tumor cells, or inhibiting the growth of HER2-expressing tumor cells.
    Type: Application
    Filed: March 25, 2025
    Publication date: July 10, 2025
    Inventors: Bing Zhang, Wei Zhao, Min Du, Yamin Lu, Yimin Ma, Xiuzhen Du, Na Lu, Zhaoxiong Ma, Xiquan Zhang
  • Patent number: 12336996
    Abstract: A drug combination containing a TLR7 agonist. Specifically, a drug combination jointly using the compound of formula I acting as a TLR7 agonist and entecavir for the treatment of hepatitis B virus infection and a use thereof, the drug combination having a good anti-hepatitis B virus infection effect.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: June 24, 2025
    Assignee: Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
    Inventors: Hongjiang Xu, Dandan Lu, Xingfeng Ge, Wei Song, Wei Shi, Ling Yang, Xiquan Zhang, Hao Yu, Zhongnan Xu
  • Patent number: 12319689
    Abstract: Disclosed is a methyl- and trifluoromethyl-containing disubstituted sulfonamide selective BCL-2 inhibitor; specifically disclosed are a compound of formula I, a stereoisomer or pharmaceutically acceptable salt of same, a preparation method therefor, and a pharmaceutical composition comprising the compound. Also disclosed are uses of the compound and of the pharmaceutical composition comprising the compound in treating anti-apoptotic protein BCL-2-related diseases such as cancer.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: June 3, 2025
    Assignee: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Fei Liu, Yanlong Liu, Hongjiang Xu, Xiquan Zhang, Shanchun Wang, Jianqing Zhang, Weiwei Feng, Bin Wang, Jinan Wang, Yubing Wang, Xujing Tang, Quandeng Nie
  • Patent number: 12231186
    Abstract: A method includes a gateway node that obtains a data transmission parameter between a first-level node and each node in a first node set, where the first-level node is located on a first-level power distribution device in a power distribution grid, and the first node set includes a node located on a power distribution device at another level in the power distribution grid other than the first-level power distribution device; determines a second-level node directly coupled to the first-level node from the first node set based on the data transmission parameter between the first-level node and each node in the first node set; and generates a physical network topology of the power distribution grid.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: February 18, 2025
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiquan Zhang, Xianyin Li, Jiahong Wei, Yu Li
  • Publication number: 20250034165
    Abstract: The present disclosure relates to a compound containing cycloalkyl or haloalkyl, and specifically discloses a compound represented by formula I?, a stereoisomer or a pharmaceutically acceptable salt thereof, a preparation method therefor, a pharmaceutical composition containing the compound, and a use thereof in treating tumors.
    Type: Application
    Filed: November 30, 2022
    Publication date: January 30, 2025
    Inventors: Fei LIU, Yan PENG, Hongjiang XU, Taotao FENG, Xiquan ZHANG, Cheng REN, Wei SHI
  • Patent number: 12195468
    Abstract: Disclosed are a compound of formula I as a toll-like receptor 7 (TLR7) agonist or a pharmaceutically acceptable salt thereof for treating colorectal cancer, a pharmaceutical combination for treating colorectal cancer comprising the TLR7 agonist and a tyrosine kinase inhibitor, and the use of the compound of formula I or the pharmaceutically acceptable salt thereof and the pharmaceutical combination for treating colorectal cancer.
    Type: Grant
    Filed: October 12, 2019
    Date of Patent: January 14, 2025
    Assignee: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Hongjiang Xu, Mincheng Zhang, Ying Zhang, Wei Song, Ling Yang, Xiquan Zhang
  • Publication number: 20240398942
    Abstract: Provided is the use of an anti-CD40 antibody, specifically, provided is a combined drug for treating cancer. The combined drug comprises an anti-CD40 antibody or an antigen-binding portion thereof and a tyrosine kinase inhibitor, and has a good anti-tumor activity and safety.
    Type: Application
    Filed: September 26, 2022
    Publication date: December 5, 2024
    Inventors: Chen SHEN, Peng LV, Xin TIAN, Ling YANG, Xiquan ZHANG
  • Patent number: 12150990
    Abstract: The invention is in the field of antibody formulations, and particularly relates to a pharmaceutical composition of a humanized monoclonal anti-PD-L1 antibody, wherein the pharmaceutical composition comprises 1-150 mg/ml of the humanized monoclonal anti-PD-L1 antibody, a buffer at 3-50 mM, 2-150 mg/ml of an isotonic adjuster/stabilizer and 0.01-0.8 mg/ml of a surfactant, and has a pH of about 4.5-6.8. The formulations prevent antibody aggregates therein from increasing, while enabling better maintenance of the biological binding activity of the antibody for a long time.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: November 26, 2024
    Assignees: NANJING SHUNXIN PHARMACEUTICAL CO., LTD., CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD
    Inventors: Jianwen Li, Yanju Cheng, Yingchun Li, Wei Zhao, Xiquan Zhang
  • Publication number: 20240374593
    Abstract: The present disclosure relates to a combined pharmaceutical composition of a CDK4/6 inhibitor and an aromatase inhibitor, and the use thereof in the treatment of breast cancer. Compared with separate administration of any agent in the composition, the combined pharmaceutical composition of the present disclosure yields a better therapeutic effect on slowing tumor growth or even eliminating tumors.
    Type: Application
    Filed: September 27, 2022
    Publication date: November 14, 2024
    Inventors: Fan FENG, Ding YU, Xiquan ZHANG, Yueting WANG
  • Patent number: 12128047
    Abstract: The present application relates to a compound of formula I as a toll-Like receptor 7 (TLR7) agonist or a pharmaceutically acceptable salt thereof for treating lung cancer, a pharmaceutical combination of the TLR7 agonist and a tyrosine kinase inhibitor for treating lung cancer, and the use of the compound of formula I or the pharmaceutically acceptable salt thereof and the pharmaceutical combination for treating lung cancer.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: October 29, 2024
    Assignee: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Xiquan Zhang, Ling Yang, Ying Zhang, Mincheng Zhang, Wei Song, Hongjiang Xu
  • Publication number: 20240343807
    Abstract: Provided is a pharmaceutical composition for treating small cell lung cancer, which comprises an anti-PD-L1 antibody, anlotinib or a pharmaceutically acceptable salt thereof, and a chemotherapeutic drug. Further provided is the use of the pharmaceutical composition or a kit containing the anti-PD-L1 antibody, anlotinib or a pharmaceutically acceptable salt thereof and the chemotherapeutic drug in the preparation of a drug for treating small cell lung cancer. Further provided is a method for treating small cell lung cancer, comprising administering to a patient in need thereof a therapeutically effective amount of the anti-PD-L1 antibody, anlotinib or a pharmaceutically acceptable salt thereof, and the chemotherapeutic drug.
    Type: Application
    Filed: August 5, 2022
    Publication date: October 17, 2024
    Inventors: Xiquan ZHANG, Xunqiang WANG, Ding YU
  • Publication number: 20240285635
    Abstract: The present invention relates to the use of a pyrrolopyrimidine compound and a pharmaceutical composition thereof for treating chronic graft versus host disease, and particularly relates to the use of a compound of formula (I), a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition thereof for treating chronic graft versus host disease.
    Type: Application
    Filed: June 21, 2022
    Publication date: August 29, 2024
    Applicants: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD., SHOUYAO HOLDINGS (BEIJING) CO., LTD., LIANYUNGANG RUNZHONG PHARMACEUTICAL CO., LTD.
    Inventors: LIFAN TU, XIQUAN ZHANG, XUNQIANG WANG, DING YU, JIANQIANG HUANG
  • Publication number: 20240269278
    Abstract: An anti-CD47 antibody for combined treatment of a blood tumor. Provided are the use of the anti-CD47 antibody and a second therapeutic agent in the preparation of a drug for treating a blood tumor in a subject. Provided is a method for treating a blood tumor in a subject, comprising administering a therapeutically effective amount of the anti-CD47 antibody and the second therapeutic agent to a subject. Also provided are a pharmaceutical combination comprising the anti-CD47 antibody and the second therapeutic agent, and a kit.
    Type: Application
    Filed: September 29, 2022
    Publication date: August 15, 2024
    Inventors: Anqi Yang, Xiquan Zhang, Ding Yu, Peng Lv, Xunqiang Wang, Xin Tian, Qin Chen
  • Publication number: 20240139208
    Abstract: The present disclosure relates to a combined pharmaceutical composition containing a CDK4/6 inhibitor and a use thereof, and specifically relates to a combined pharmaceutical composition comprising a compound of formula (I) or a pharmaceutically acceptable salt thereof and fulvestrant. The present disclosure further relates to a use of the combined pharmaceutical composition in treating breast cancer. The combined pharmaceutical composition of the present disclosure produces better therapeutic effects in reducing tumor growth or even eliminating tumors.
    Type: Application
    Filed: March 3, 2022
    Publication date: May 2, 2024
    Inventors: Fan FENG, Ding YU, Xungiang WANG, Xiquan ZHANG, Yanfeng BAI, Chaoqiang YANG, Yuying ZHANG
  • Publication number: 20240101551
    Abstract: A crystal form and salt form of a bromine domain protein inhibitor represented by formula (I), a preparation method therefor, and a use of the crystal form and salt form in the preparation of a drug for treating diseases mediated by BET protein.
    Type: Application
    Filed: January 19, 2021
    Publication date: March 28, 2024
    Applicants: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD., SHOUYAO HOLDINGS (BEIJING) CO., LTD.
    Inventors: Wenwei XU, Zhenliang SHAN, Yingya ZHANG, Guoliang ZHANG, Yun GE, Aiming ZHANG, Xiquan ZHANG
  • Publication number: 20240043401
    Abstract: A salt form of a tetra-substituted olefin compound, a crystal of the compound and the salt, and a preparation method relating to a crystal of a compound represented by formula (I), a salt thereof, a crystal of the salt thereof, and a preparation method therefor.
    Type: Application
    Filed: December 30, 2021
    Publication date: February 8, 2024
    Applicant: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Shuwen DUAN, Jianyu LU, Ting YAO, Lihong HU, Charles Z. DING, Jian LI, Shuhui CHEN, Xiquan ZHANG
  • Patent number: 11881931
    Abstract: A data transmission time obtaining method, apparatus, and system are provided. The method includes: A first device sends a first packet to a second device, and obtains a first send timestamp of the first packet; the first device receives a second packet that is sent by the second device and that corresponds to the first packet, and obtains a first receive timestamp of the second packet; the first device calculates, based on timing frequency of the second device, a second receive timestamp at which the second device receives the first packet and a second send timestamp at which the second device sends the second packet; and the first device calculates a data transmission time between the first device and the second device based on the first send timestamp, the first receive timestamp, the second send timestamp, and the second receive timestamp.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: January 23, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiquan Zhang, Jun Guo, Weixian Zhang