Patents by Inventor Yawei ZHENG

Yawei ZHENG 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: 11649418
    Abstract: A method for inhibiting a flash point of trans-1,2-dichloroethylene (T-1,2-DCE) and a use of T-1,2-DCE are provided. The T-1,2-DCE has an excellent cleaning effect and is environmental friendly but cannot be used alone because of huge safety hazard caused by its low flash point. 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) is used to inhibit the flash point of T-1,2-DCE. However, because the actual boiling points of these two substances are quite different, the two substances are easily separated at a slightly-high ambient temperature. Because a boiling point of HCFO-1233zd is extremely low, HCFO-1233zd will escape rapidly, resulting in the loss of inhibition on the flash point. In the present disclosure, T-1,2-DCE and 1-chloro-2,3,3-trifluoropropene are mixed to prepare a mixed solution, and the mixed solution can effectively maintain the inhibition on the flash point of T-1,2-DCE in various ambient temperatures, such that the T-1,2-DCE can be heated to generate a steam for cleaning.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: May 16, 2023
    Assignee: ZIBO RHEMA INTERNATIONAL INC.
    Inventors: Farui Zheng, Yawei Zheng, Panming Jian, Zihan Zheng
  • Publication number: 20230139025
    Abstract: An antioxidant for use in treatment for a radiation-induced bystander effect to a transplanted cell in a host is provided. The antioxidant is N-acetyl-L-cysteine, sulforaphane or resveratrol, or a combination thereof. The RIBE on transplanted human hematopoietic cells impaired the long-term hematopoietic reconstitution of human HSCs as well as the colony-forming ability of HPCs, and the RIBE-affected human hematopoietic cells showed enhanced DNA damage responses, cell cycle arrest and p53-dependent apoptosis, mainly due to oxidative stress. Taken together, these findings suggest that RIBE impairs human HSCs by oxidative DNA damage. The present disclosure provides definitive evidence for RIBE in transplanted human HSCs and further justifies the necessity for conducting clinical trials to assess the ability of multiple antioxidants to improve the efficacy of HSC transplantation for patients with hematological or non-hematological disorders.
    Type: Application
    Filed: November 4, 2021
    Publication date: May 4, 2023
    Applicant: Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC
    Inventors: Tao Cheng, Linping Hu, Xiuxiu Yin, Yawen Zhang, Aiming Pang, Xiaowei Xie, Shangda Yang, Caiying Zhu, Yapu Li, Biao Zhang, Yaojin Huang, Yunhong Tian, Mei Wang, Wenbin Cao, Shulian Chen, Yawei Zheng, Shihui Ma, Fang Dong, Sha Hao, Sizhou Feng, Yongxin Ru, Hui Cheng, Erlie Jiang
  • Publication number: 20230081584
    Abstract: A preparation method of 1-chloro-2,3,3-trifluoropropene is provided. As a new eco-friendly compound that makes up a heat transfer medium, the 1-chloro-2,3,3-trifluoropropene (HCFO-1233yd) has been valued in the field of industrial cleaning and explosion-proof due to it excellent performance of low global warming potential (GWP) and ozone depletion potential (ODP) values, but HCFO-1233yd has high preparation cost that limits its large-scale application. In the preparation method of the present disclosure, 1,1,2,3,3-pentachloropropane is fluorinated into 1,2-dichloro-3,3-difluoropropene under the catalysis of a chromium-containing solid catalyst.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 16, 2023
    Applicant: ZIBO RHEMA INTERNATIONAL INC.
    Inventors: Farui ZHENG, Yawei ZHENG, Panming JIAN, Zihan ZHENG
  • Publication number: 20230073016
    Abstract: A method for inhibiting a flash point of trans-1,2-dichloroethylene (T-1,2-DCE) and a use of T-1,2-DCE are provided. The T-1,2-DCE has an excellent cleaning effect and is environmental friendly but cannot be used alone because of huge safety hazard caused by its low flash point. 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) is used to inhibit the flash point of T-1,2-DCE. However, because the actual boiling points of these two substances are quite different, the two substances are easily separated at a slightly-high ambient temperature. Because a boiling point of HCFO-1233zd is extremely low, HCFO-1233zd will escape rapidly, resulting in the loss of inhibition on the flash point. In the present disclosure, T-1,2-DCE and 1-chloro-2,3,3-trifluoropropene are mixed to prepare a mixed solution, and the mixed solution can effectively maintain the inhibition on the flash point of T-1,2-DCE in various ambient temperatures, such that the T-1,2-DCE can be heated to generate a steam for cleaning.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 9, 2023
    Applicant: ZIBO RHEMA INTERNATIONAL INC.
    Inventors: Farui ZHENG, Yawei ZHENG, Panming JIAN, Zihan ZHENG
  • Patent number: 10799474
    Abstract: The present invention provides a method for treating leukemia utilizing somatic cell reprogramming. The method includes a step of introduction of somatic cell reprogramming inducing factors Oct-4, Sox-2, Klf4 and c-Myc (OSKM for short) into leukemic cells or a step of utilizing small reprogramming molecules in in-vitro culture. It promotes leukemic cells to initiate process of somatic cell reprogramming in order to induce apoptosis and finally purpose of eliminating leukemic cells in-vivo or in-vitro is achieved. It provides new ideas and methods for clinical treatment of leukemia in the future.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 13, 2020
    Assignee: Institute of Hematology and Blood Disease Hospital, CAMS & PUMC
    Inventors: Tao Cheng, Hui Cheng, Yajie Wang, Hongyan Zhang, Yawei Zheng, Sha Hao
  • Publication number: 20180228763
    Abstract: The present invention provides a method for treating leukemia utilizing somatic cell reprogramming. The method includes a step of introduction of somatic cell reprogramming inducing factors Oct-4, Sox-2, Klf4 and c-Myc (OSKM for short) into leukemic cells or a step of utilizing small reprogramming molecules in in-vitro culture. It promotes leukemic cells to initiate process of somatic cell reprogramming in order to induce apoptosis and finally purpose of eliminating leukemic cells in-vivo or in-vitro is achieved. It provides new ideas and methods for clinical treatment of leukemia in the future.
    Type: Application
    Filed: July 22, 2016
    Publication date: August 16, 2018
    Applicant: Institute of Hematology and Blood Disease Hospital Chinese Academy of Medical Sciences and Peking
    Inventors: Tao CHENG, Hui CHENG, Yajie WANG, Hongyan ZHANG, Yawei ZHENG, Sha HAO