Patents by Inventor Daoping Guo

Daoping Guo 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).

  • HYDRATED SODIUM SILICATE ALUMINATE AS AN ACCELERATOR FOR SPRAYED CONCRETE
    Publication number: 20260138920
    Abstract: Embodiments relate to the development of accelerators, and specifically to hydrated silicate aluminate accelerators. The accelerators can be blended with cement-containing compositions to form shotcrete (e.g., sprayed concrete) mixtures. The accelerators have improved properties over conventional sodium silicate accelerators, offering early strength development of shotcrete while maintaining or improving long-term strength.
    Type: Application
    Filed: January 16, 2026
    Publication date: May 21, 2026
    Applicant: PQ LLC
    Inventors: Michael McDonald, Daoping Guo, Wieslawa Sidorkiewicz, Ava Grace Maffei
  • HYDRATED SODIUM SILICATE ALUMINATE AS A BINDER AGENT FOR INORGANIC SUBSTRATES
    Publication number: 20260022063
    Abstract: Embodiments relate to the development of binder agents, and specifically to a hydrated silicate aluminate binder agents. The binder agents, whether combined or not with hardener agents, offer significant improvements in terms of mechanical strength and water resistance compared to soluble sodium-based silicates when used as agents for inorganic and organic substrates.
    Type: Application
    Filed: July 14, 2025
    Publication date: January 22, 2026
    Inventors: Flavio Ernesto Ribeiro, Ronaldo dos Santos Flor, Bruna Rosa Polastro, Michael McDonald, Daoping Guo
  • Sustainable two-component annular grout composition and method for use with a tunnel-boring machine
    Patent number: 11673835
    Abstract: A method and composition are provided for backfilling the annular gap created as a tunnel boring machine advances through the ground. The fill material is comprised of two components that are combined and mixed together just prior to entering the annular gap. The first component is non-cement slurry consisting of a fluidized bed combustion ash such as coal ash. The second component consists of an alkali silicate such as sodium silicate. Additionally, ordinary Portland cement and/or metakaolin can be added to the grout composition.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: June 13, 2023
    Assignee: PQ, LLC
    Inventors: Michael McDonald, Kelly Paul Short, Kenneth A. Berg, Flavio Ernesto Ribeiro, Jim Moran, Peter Marinescu, Daoping Guo
  • SUSTAINABLE TWO-COMPONENT ANNULAR GROUT COMPOSITION AND METHOD FOR USE WITH A TUNNEL-BORING MACHINE
    Publication number: 20220274881
    Abstract: A method and composition are provided for backfilling the annular gap created as a tunnel boring machine advances through the ground. The fill material is comprised of two components that are combined and mixed together just prior to entering the annular gap. The first component is non-cement slurry consisting of a fluidized bed combustion ash such as coal ash. The second component consists of an alkali silicate such as sodium silicate. Additionally, ordinary Portland cement and/or metakaolin can be added to the grout composition.
    Type: Application
    Filed: January 31, 2022
    Publication date: September 1, 2022
    Inventors: Michael McDonald, Kelly Paul Short, Kenneth A. Berg, Flavio Ernesto Ribeiro, Jim Moran, Peter Marinescu, Daoping Guo