Patents by Inventor Wenjun He

Wenjun He 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).

  • Supported quaternary phosphonium catalyst, preparation and use thereof
    Patent number: 9416093
    Abstract: This invention relates to a supported quaternary phosphonium catalyst, preparation thereof and use thereof in producing dialkyl carbonates. The supported quaternary phosphonium catalyst of this invention has the following average molecular structure (I), and is characterized by a relatively high and stable catalyst activity. wherein, each of X, L, n, R1, R2, R3 and is the same as that in the specification.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: August 16, 2016
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, Sinopec
    Inventors: Liangfeng Chen, Wenjun He
  • SUPPORTED QUATERNARY PHOSPHONIUM CATALYST, PREPARATON AND USE THEREOF
    Publication number: 20130317179
    Abstract: This invention relates to a supported quaternary phosphonium catalyst, preparation thereof and use thereof in producing dialkyl carbonates. The supported quaternary phosphonium catalyst of this invention has the following average molecular structure (I), and is characterized by a relatively high and stable catalyst activity. wherein, each of X, L, n, R1, R2, R3 and is the same as that in the specification.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 28, 2013
    Applicants: SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC, CHINA PETROLEUM & CHEMICAL CORPORATION
    Inventors: Liangfeng CHEN, Wenjun HE
  • Method and apparatus for liquid safety-detection by backscatter with a radiation source
    Patent number: 7400706
    Abstract: A method and an apparatus for liquid safety-detection by backscattering with a radiation source are provided that relate to a radiation detecting technology field.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: July 15, 2008
    Assignees: Tsinghua University, NucTech Company Limited
    Inventors: Yulan Li, Haifeng Hu, Yinong Liu, Zhiqiang Chen, Kejun Kang, Li Zhang, Wanlong Wu, Yuanjing Li, Yi Wang, Wenjun He, Mingrui Qi
  • Method and apparatus for liquid safety-detection by backscatter with a radiation source
    Publication number: 20060133566
    Abstract: A method and an apparatus for liquid safety-detection by backscatter with a radiation source relate to a radiation detecting technology field.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 22, 2006
    Applicants: Tsinghua University, NucTech Company Limited
    Inventors: Yulan Li, Haifeng Hu, Yinong Liu, Zhiqiang Chen, Kejun Kang, Li Zhang, Wanlong Wu, Yuanjing Li, Yi Wang, Wenjun He, Mingrui Qi