Patents by Inventor Xijian LI

Xijian LI 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).

  • Process for removing S02 from gas with S02 content that is temporarily very high
    Patent number: 10807038
    Abstract: The invention is directed to a process and a system for removing sulfur dioxide from a feed gas stream. In the process the feed gas pre-scrubbed. Then SO2 is absorbed from the gas with an absorbing medium. The spent absorbing medium is regenerated. These process steps are interchanged with a caustic treatment in the pre-scrubbing zone in case of a very high SO2 content in the feed gas stream. The system comprises a pre-scrubbing unit, an absorption unit, and a regeneration unit. The system is characterized in that the pre-scrubber unit comprises an inlet for an aqueous solution comprising a strong base. These are a simple, cost-efficient and reliable process and facility for processing gas with a varying SO2 content.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 20, 2020
    Assignee: Shell Oil Company
    Inventors: Xijian Li, FengDan Wang
  • PROCESS FOR REMOVING S02 FROM GAS WITH S02 CONTENT THAT IS TEMPORARILY VERY HIGH
    Publication number: 20200016530
    Abstract: The invention is directed to a process and a system for removing sulfur dioxide from a feed gas stream. In the process the feed gas pre-scrubbed. Then SO2 is absorbed from the gas with an absorbing medium. The spent absorbing medium is regenerated. These process steps are interchanged with a caustic treatment in the pre-scrubbing zone in case of a very high SO2 content in the feed gas stream. The system comprises a pre-scrubbing unit, an absorption unit, and a regeneration unit. The system is characterized in that the pre-scrubber unit comprises an inlet for an aqueous solution comprising a strong base. These are a simple, cost-efficient and reliable process and facility for processing gas with a varying SO2 content.
    Type: Application
    Filed: March 6, 2018
    Publication date: January 16, 2020
    Inventors: Xijian LI, FengDan WANG
  • Bicycle taillight
    Patent number: D960412
    Type: Grant
    Filed: November 25, 2021
    Date of Patent: August 9, 2022
    Assignee: DONGGUAN ANTUSHI ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Yugang Ke, Xijian Li
  • Bicycle taillight
    Patent number: D961821
    Type: Grant
    Filed: November 25, 2021
    Date of Patent: August 23, 2022
    Assignee: DONGGUAN ANTUSHI ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Yugang Ke, Xijian Li
  • Bicycle tail light
    Patent number: D967992
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: October 25, 2022
    Inventors: Yugang Ke, Xijian Li
  • Bicycle taillight
    Patent number: D980474
    Type: Grant
    Filed: November 25, 2021
    Date of Patent: March 7, 2023
    Assignee: DONGGUAN ANTUSHI ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Yugang Ke, Xijian Li
  • Anti theft alarm
    Patent number: D990347
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: June 27, 2023
    Inventors: Xijian Li, Yugang Ke