Patents by Inventor Jianmei LIU

Jianmei 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).

  • Patent number: 12145887
    Abstract: The present invention discloses a multiphase ceramic material with a giant dielectric constant, wherein the multiphase ceramic material has a general formula of AxBnxTi1?(n+1)xO2; wherein A is at least one selected from the group consisting of Nb, Ta, V, Mo, and Sb, B is at least one selected from the group consisting of In, Ga, Al, Co, Cr, Sc, Fe (III), and a trivalent rare-earth cation; n is a molar ratio of B to A, 1<n?5, 0<x?0.1. The multiphase ceramic material possesses outstanding properties including a giant dielectric constant, a low dielectric loss, and excellent frequency- and temperature-stability. In particular, it exhibits a high insulation resistivity of higher than 1011?·cm and a high breakdown voltage, which implies it can be applied in high-energy storage devices and supercapacitors. This invention also provides a method to synthesize the multiphase ceramic material.
    Type: Grant
    Filed: March 29, 2020
    Date of Patent: November 19, 2024
    Assignee: GUANGDONG FENGHUA ADVANCED TECHNOLOGY HOLDING CO., LTD.
    Inventors: Xiuhua Cao, Jianmei Liu, Dehong Chen, Haidong Ren, Yun Liu, Terry James Frankcombe, Zhenxiao Fu, Shiwo Ta
  • Patent number: 12037290
    Abstract: Disclosed herein is a doped perovskite barium stannate material, which has a chemical general formula of BaAxBxSn1-2xO3, where A is at least one of In, Y, Bi and La; B is at least one of Nb and Ta, and 0<x?0.025. The doped perovskite barium stannate material disclosed in the invention has a high dielectric constant, low dielectric loss and good temperature-stability, and it can be used not only as low-frequency ceramic capacitor dielectrics, but also as microwave dielectric ceramics because of its excellent microwave dielectric properties, implying the potential application in the field of microwave communication. What's more, disclosed is a method to prepare the doped perovskite barium stannate material and the application of the doped perovskite barium stannate material in a low-frequency ceramic capacitor or microwave communication dielectric ceramics.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: July 16, 2024
    Assignee: GUANGDONG FENGHUA ADVANCED TECHNOLOGY HOLDING CO., LTD.
    Inventors: Zhenxiao Fu, Jianmei Liu, Haidong Ren, Yun Liu, Terry James Frankcombe, Xiuhua Cao, Shiwo Ta
  • Publication number: 20220127197
    Abstract: The present invention discloses a multiphase ceramic material with a giant dielectric constant, wherein the multiphase ceramic material has a general formula of AxBnxTi1?(n+1)xO2; wherein A is at least one selected from the group consisting of Nb, Ta, V, Mo, and Sb, B is at least one selected from the group consisting of In, Ga, Al, Co, Cr, Sc, Fe (III), and a trivalent rare-earth cation; n is a molar ratio of B to A, 1<n?5 , 0<x?0.1. The multiphase ceramic material possesses outstanding properties including a giant dielectric constant, a low dielectric loss, and excellent frequency- and temperature-stability. In particular, it exhibits a high insulation resistivity of higher than 1011 ?·cm and a high breakdown voltage, which implies it can be applied in high-energy storage devices and supercapacitors. This invention also provides a method to synthesize the multiphase ceramic material.
    Type: Application
    Filed: March 29, 2020
    Publication date: April 28, 2022
    Inventors: Xiuhua Cao, Jianmei Liu, Dehong Chen, Haidong Ren, Yun Liu, Terry James Frankcombe, Zhenxiao Fu, Shiwo Ta
  • Publication number: 20210300827
    Abstract: Disclosed herein is a doped perovskite barium stannate material, which has a chemical general formula of BaAxBxSn1-2xO3, where A is at least one of In, Y, Bi and La; B is at least one of Nb and Ta, and 0<x?0.025. The doped perovskite barium stannate material disclosed in the invention has a high dielectric constant, low dielectric loss and good temperature-stability, and it can be used not only as low-frequency ceramic capacitor dielectrics, but also as microwave dielectric ceramics because of its excellent microwave dielectric properties, implying the potential application in the field of microwave communication. What's more, disclosed is a method to prepare the doped perovskite barium stannate material and the application of the doped perovskite barium stannate material in a low-frequency ceramic capacitor or microwave communication dielectric ceramics.
    Type: Application
    Filed: May 3, 2021
    Publication date: September 30, 2021
    Inventors: Zhenxiao Fu, Jianmei Liu, Haidong Ren, Yun Liu, Terry James Frankcombe, Xiuhua Cao, Shiwo Ta
  • Publication number: 20210031685
    Abstract: An on-board warning sound device and apparatus for vehicle is provided. The on-board warning sound apparatus for a vehicle may include a horn assembly having a horn coil assembly and a horn trumpet connected with the horn coil assembly; a loudspeaker arranged independently of the horn assembly; and a control unit connected with the horn assembly and the loudspeaker. The control unit may generate a sound intensity control signal according to the current state of the vehicle and a surrounding environment of the vehicle, and may control the horn assembly to emit horn warning sounds based on the sound intensity control signal. The control unit may further generate a simulated engine sound signal according to the current state of the vehicle, and may control the loudspeaker to emit simulated engine warning sounds based on the simulated engine sound signal.
    Type: Application
    Filed: April 26, 2018
    Publication date: February 4, 2021
    Inventors: Guangzhen XU, Guojin YAN, Weicheng HU, Jin QIN, Xiaojue SONG, Jianmei LIU, Jianlong HUANG
  • Patent number: 10063335
    Abstract: The present disclosure discloses a method for remotely configuring a Precision Time Protocol PTP service of an Optical Network Unit ONU. The method includes: after an ONU performs an initialization, the ONU creates a PTP management entity; the ONU receives a PTP management entity attribute sent by an OLT and set by the OLT; and the ONU parses the PTP management entity attribute sent by the OLT and sets a corresponding PTP service according to the PTP management entity attribute. The present disclosure further discloses an ONU, an OLT and a system corresponding to the method.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: August 28, 2018
    Assignee: ZTE Corporation
    Inventors: Qingguo Zhang, Jianmei Liu
  • Publication number: 20170272191
    Abstract: The present disclosure discloses a method for remotely configuring a Precision Time Protocol PTP service of an Optical Network Unit ONU. The method includes: after an ONU performs an initialization, the ONU creates a PTP management entity; the ONU receives a PTP management entity attribute sent by an OLT and set by the OLT; and the ONU parses the PTP management entity attribute sent by the OLT and sets a corresponding PTP service according to the PTP management entity attribute. The present disclosure further discloses an ONU, an OLT and a system corresponding to the method.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 21, 2017
    Inventors: Qingguo ZHANG, Jianmei LIU