Patents by Inventor Zicheng ZHANG

Zicheng 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).

  • VEHICLE DIGITAL CERTIFICATE MANAGEMENT METHOD AND DEVICE
    Publication number: 20230088018
    Abstract: A vehicle digital certificate management method and a device thereof.
    Type: Application
    Filed: November 21, 2022
    Publication date: March 23, 2023
    Inventors: QINGQUAN HUANG, JINCHI ZHANG, XIAOSHENG SHI, ZICHENG ZHANG
  • Green liquor clarification using sedimentation tank during white liquor preparation
    Patent number: 11174591
    Abstract: The invention relates to a method for clarification of raw green liquor in a sedimentation tank. According to the invention is a part of dregs separated in the sedimentation tank recirculated back into the inflow of raw green liquor, and preferably after passing the dregs through at least one turbulence generator (30, 31) that could break up larger dregs particles into smaller dregs particles, and thus create larger total surface on the dregs particles, improving sedimentation rate in the sedimentation tank. In a preferred embodiment is the recirculated dregs added into the flow of raw green liquor before a flocculant is added into the flow of raw green liquor and mixed recirculated dregs.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: November 16, 2021
    Assignee: VALMET AB
    Inventors: Zicheng Zhang, John Johnson, Magnus Ingelman, Sanchuan Guo
  • GREEN LIQUOR CLARIFICATION USING SEDIMENTATION TANK DURING WHITE LIQUOR PREPARATION
    Publication number: 20200340179
    Abstract: The invention relates to a method for clarification of raw green liquor in a sedimentation tank. According to the invention is a part of dregs separated in the sedimentation tank recirculated back into the inflow of raw green liquor, and preferably after passing the dregs through at least one turbulence generator (30, 31) that could break up larger dregs particles into smaller dregs particles, and thus create larger total surface on the dregs particles, improving sedimentation rate in the sedimentation tank. In a preferred embodiment is the recirculated dregs added into the flow of raw green liquor before a flocculant is added into the flow of raw green liquor and mixed recirculated dregs.
    Type: Application
    Filed: September 20, 2018
    Publication date: October 29, 2020
    Applicant: VALMET AB
    Inventors: Zicheng ZHANG, John JOHNSON, Magnus INGELMAN, Sanchuan GUO