Patents by Inventor Hongyi DU

Hongyi DU 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: 11731119
    Abstract: Disclosed in the present invention is an integrated catalyst system for stoichiometric-burn natural gas vehicles, the catalyst system consisting of a three-way catalyst, a molecular sieve catalyst, and a base body, the three-way catalyst and the molecular sieve catalyst being coated on a surface of the base body. In the integrated three-way catalyst and molecular sieve catalyst system of the present invention, at the same time that pollutants such as CO, HC, and NOx in the exhaust of stoichiometric-burn natural gas vehicles are processed, the produced byproduct NH3 can also be processed, and the conversion rates of CO, HC, NOx, and NH3 are high.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: August 22, 2023
    Assignee: Sinocat Environmental Technology Co., Ltd.
    Inventors: Yongxiang Cheng, Yun Wang, Hongyi Du, Ganxue Wu, Xueqing Zhou, Guangfa Zu, Yi Yan, Dongdong Wu, Yun Li, Qizhang Chen
  • Publication number: 20230256418
    Abstract: A three-way catalyst having low NH3 formation is disclosed. The catalyst includes a carrier and a coating material. The coating material includes a precious metal active component and a catalytic material. The precious metal active component includes a first precious metal active component and a second precious metal active component. The first precious metal active component is a composition containing Ru. The second precious metal active component is a composition containing Pt, Pd and Rh. Alternatively, the second precious metal active component is a composition containing Pd and Rh.
    Type: Application
    Filed: April 26, 2023
    Publication date: August 17, 2023
    Inventors: Yun WANG, Yongxiang CHEN, Hongyi DU, Qin WANG, Haidi XU, Hai LONG, Dengbing XIAN, Renliang HUANG, Tiantian LUO, Meixia LIU, Cuirong CHEN, Dequan CHEN
  • Patent number: 11596932
    Abstract: Disclosed in the present invention is a tail gas treatment catalyst. The catalyst consists of a carrier, a first catalyst, and a second catalyst. The first catalyst and the second catalyst are provided on both ends of the carrier. The first catalyst can purify pollutants in tail gas. The second catalyst can purify a byproduct, ammonia, obtained by the purification by the first catalyst and pollutants that are not completely purified by the first catalyst. The second catalyst is of a double-layer structure; the lower layer consists of an oxygen storage material, aluminum oxide, and a second active component; the second active component is a composition of Pt and Pd, or a composition of Ce, Fe, Ni and Cu; the upper layer consists of a molecular sieve and a third active component; the third active component is Cu or a composition of Cu and Fe.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 7, 2023
    Assignee: Sinocat Environmental Technology Co., Ltd.
    Inventors: Yun Wang, Yi Dan, Hongyi Du, Zan Zhu, Tiantian Luo, Yanhua Zhang, Qin Wang, Yun Li, Qizhang Chen, Yongxiang Cheng
  • Publication number: 20210023542
    Abstract: Disclosed in the present invention is an integrated catalyst system for stoichiometric-burn natural gas vehicles, the catalyst system consisting of a three-way catalyst, a molecular sieve catalyst, and a base body, the three-way catalyst and the molecular sieve catalyst being coated on a surface of the base body. In the integrated three-way catalyst and molecular sieve catalyst system of the present invention, at the same time that pollutants such as CO, HC, and NOx in the exhaust of stoichiometric-burn natural gas vehicles are processed, the produced byproduct NH3 can also be processed, and the conversion rates of CO, HC, NOx, and NH3 are high.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 28, 2021
    Inventors: Yongxiang CHENG, Yun WANG, Hongyi DU, Ganxue WU, Xueqing ZHOU, Guangfa ZU, Yi YAN, Dongdong WU, Yun LI, Qizhang CHEN
  • Publication number: 20210001314
    Abstract: Disclosed in the present invention is a tail gas treatment catalyst. The catalyst consists of a carrier, a first catalyst, and a second catalyst. The first catalyst and the second catalyst are provided on both ends of the carrier. The first catalyst can purify pollutants in tail gas. The second catalyst can purify a byproduct, ammonia, obtained by the purification by the first catalyst and pollutants that are not completely purified by the first catalyst. The second catalyst is of a double-layer structure; the lower layer consists of an oxygen storage material, aluminum oxide, and a second active component; the second active component is a composition of Pt and Pd, or a composition of Ce, Fe, Ni and Cu; the upper layer consists of a molecular sieve and a third active component; the third active component is Cu or a composition of Cu and Fe.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 7, 2021
    Inventors: Yun WANG, Yi DAN, Hongyi DU, Zan ZHU, Tiantian LUO, Yanhua ZHANG, Qin WANG, Yun LI, Qizhang CHEN, Yongxiang CHENG