Patents by Inventor Leiming Ji

Leiming Ji 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).

  • METHOD AND APPARATUS FOR CONTROLLING FOCUSING ASSEMBLY, FOCUSING ASSEMBLY, AND PROJECTOR
    Publication number: 20220075249
    Abstract: The present disclosure relates to the technical field of digital projection and display, and in particular, relates to a method for controlling a focusing assembly. The focusing assembly includes a lens module, a motor, a bevel retaining piece, and a photoelectric switch. The photoelectric switch includes an optical transmitter and an optical receiver that are oppositely disposed, the motor is connected to the lens module. The method includes: receiving a current voltage signal from the photoelectric switch; determining a current position of the lens module based on the current voltage signal; controlling the motor to stop driving the lens module in response to the current position of the lens module being the predetermined position.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 10, 2022
    Inventors: Xinyong Zhang, Steve Yeung, Zhiqiang Gao, Leiming Ji, Augustus Yeung, Mingnei Ding
  • Thermosettable composition containing a combination of an amphiphilic block copolymer and a polyol and a thermoset product therefrom
    Patent number: 8722798
    Abstract: A thermosettable composition including (a) at least an amphophilic block copolymer, (b) at least a polyol, (c) at least an epoxy resin containing an average at least 2 oxirane rings per molecule, (d) at least an anhydride hardener containing an average at least 1 anhydride ring per molecule, and (e) at least a catalyst; and a thermoset product prepared from said thermosettable composition.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: May 13, 2014
    Inventors: Leiming Ji, Yong-Jiang Li, Ludovic Valette
  • THERMOSETTABLE COMPOSITION CONTAINING A COMBINATION OF AN AMPHIPHILIC BLOCK COPOLYMER AND A POLYOL AND A THERMOSET PRODUCT THEREFROM
    Publication number: 20110319523
    Abstract: A thermosettable composition including (a) at least an amphophilic block copolymer, (b) at least a polyol, (c) at least an epoxy resin containing an average at least 2 oxirane rings per molecule, (d) at least an anhydride hardener containing an average at least 1 anhydride ring per molecule, and (e) at least a catalyst; and a thermoset product prepared from said thermosettable composition.
    Type: Application
    Filed: March 9, 2009
    Publication date: December 29, 2011
    Inventors: Leiming Ji, Ludovic Valette, Yong-Jiang Li