Patents by Inventor Guijun LI

Guijun 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).

  • MULTI-HEATING 3D PRINTER AND 3D PRINTING METHOD
    Publication number: 20240122226
    Abstract: A 3D food printer includes a printer head including, an extrusion nozzle and a laser assembly with at least one laser, and a heated printing platform. The extrusion nozzle is configured to extrude food onto the printing platform, and each of the printing platform and the at least one laser are configured to heat food extruded onto the printing platform.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 18, 2024
    Inventors: Guijun LI, Kong Wai LEE, Yang XU, Qiaoyaxiao YUAN, Cynthia Hsin-tsing MU
  • SYNTHESIS METHOD FOR HIGH WEATHER-RESISTANT RED WATER-BASED POLYURETHANE EMULSION
    Publication number: 20200299448
    Abstract: The present invention relates to the field of chemical industries, and discloses a method for synthesizing a highly weather-resistant red waterborne polyurethane emulsion, including using oligomeric diol, aliphatic diisocyanate, iron-rich red attapulgite clay, and a hydrophilic chain extender for stepwise polymerization to synthesize a red attapulgite clay modified hydrophilic polyurethane prepolymer, then self-emulsifying and dispersing in metered water, and then adding a small molecule diamine chain extender for chain extension to obtain a red attapulgite clay modified red waterborne polyurethane emulsion. The preparation method of the present invention is easy to operate, energy-saving and environmentally friendly. The prepared red waterborne polyurethane emulsion has a solid content>30 wt. % and the pH between 6.0 and 7.0, and its coating product has the advantages of good water resistance, high weather resistance, vivid color, etc., and has a broad market prospect.
    Type: Application
    Filed: January 8, 2019
    Publication date: September 24, 2020
    Inventors: Yu MAO, Lingli NI, Yongtao LIU, Xiaoyan GAO, Peng CAI, Jing CHENG, Guijun LI
  • Organic-inorganic perovskite materials and optoelectronic devices fabricated by close space sublimation
    Patent number: 10381564
    Abstract: A method of fabricating a hybrid organic-inorganic halide perovskite film includes depositing a precursor layer onto a substrate, the precursor layer comprising metal halide, placing an organic source-material layer onto a boat, the organic source-material layer comprising an organic cation, and annealing the precursor layer and the organic source-material layer in a vacuum chamber enclosed in a constrained volume.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: August 13, 2019
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Hoi Sing Kwok, Guijun Li, Yeuk Lung Jacob Ho, Man Wong
  • ORGANIC-INORGANIC PEROVSKITE MATERIALS AND OPTOELECTRONIC DEVICES FABRICATED BY CLOSE SPACE SUBLIMATION
    Publication number: 20180248118
    Abstract: A method of fabricating a hybrid organic-inorganic halide perovskite film includes depositing a precursor layer onto a substrate, the precursor layer comprising metal halide, placing an organic source-material layer onto a boat, the organic source-material layer comprising an organic cation, and annealing the precursor layer and the organic source-material layer in a vacuum chamber enclosed in a constrained volume.
    Type: Application
    Filed: August 17, 2016
    Publication date: August 30, 2018
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Hoi Sing KWOK, Guijun LI, Yeuk Lung Jacob HO, Man WONG