Patents by Inventor Yunchuan Liu

Yunchuan Liu 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).

  • Near-field microwave heating system and method
    Patent number: 11845202
    Abstract: A microwave heating system includes: a variable-frequency microwave source having a usable bandwidth about a center frequency; a waveguide with an input side connected to the source and an output side terminating in a launch structure; and, a metallic reflector plate facing the launch structure and perpendicular thereto and spaced therefrom at a distance of no more than twice the microwave wavelength at an operative frequency of the microwave source, the reflector plate including a recessed area of a selected size and shape located facing the launch structure so that a material to be treated may be placed between the launch structure and the recessed area for exposure to microwave energy. A related method is also disclosed.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: December 19, 2023
    Assignee: Expert Tooling and Automation, LTD
    Inventors: Robert J. Schauer, Keith R. Hicks, Andrew Cardin, Clayton R. DeCamillis, Yunchuan Liu, Andrew Bools
  • Near-Field Microwave Heating System and Method
    Publication number: 20220258384
    Abstract: A microwave heating system includes: a variable-frequency microwave source having a usable bandwidth about a center frequency; a waveguide with an input side connected to the source and an output side terminating in a launch structure; and, a metallic reflector plate facing the launch structure and perpendicular thereto and spaced therefrom at a distance of no more than twice the microwave wavelength at an operative frequency of the microwave source, the reflector plate including a recessed area of a selected size and shape located facing the launch structure so that a material to be treated may be placed between the launch structure and the recessed area for exposure to microwave energy. A related method is also disclosed.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 18, 2022
    Inventors: Robert J. Schauer, Keith R. Hicks, Andrew Cardin, Clayton R. DeCamillis, Yunchuan Liu, Andrew Bools