Patents by Inventor Li HAI

Li HAI 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).

  • Desodiated sodium transition metal oxides for primary batteries
    Patent number: 12381207
    Abstract: The invention provides primary batteries that incorporate a desodiated sodium transition metal oxide into the positive electrode (a cathode). Batteries of the invention using a desodiated sodium transition metal oxide in the cathode exhibit discharge voltages, battery capacities, and energy densities higher than a traditional Zn—MnO2 dry cell battery, such as a commercially available AA battery. These batteries are also advantageous over comparable lithium ion batteries due to the high abundance and low cost of sodium precursor materials with similar electrical performance.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: August 5, 2025
    Assignee: President and Fellows of Harvard College
    Inventors: Xin Li, Li Hai, Yichao Wang
  • DESODIATED SODIUM TRANSITION METAL OXIDES FOR PRIMARY BATTERIES
    Publication number: 20220166012
    Abstract: The invention provides primary batteries that incorporate a desodiated sodium transition metal oxide into the positive electrode (a cathode). Batteries of the invention using a desodiated sodium transition metal oxide in the cathode exhibit discharge voltages, battery capacities, and energy densities higher than a traditional Zn—MnO2 dry cell battery, such as a commercially available AA battery. These batteries are also advantageous over comparable lithium ion batteries due to the high abundance and low cost of sodium precursor materials with similar electrical performance.
    Type: Application
    Filed: April 6, 2020
    Publication date: May 26, 2022
    Inventors: Xin LI, Li HAI, Yichao WANG
  • Ear bud
    Patent number: D977459
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: February 7, 2023
    Assignee: Savannah Marketing Group, Inc.
    Inventors: He Jun, Li Hai, XuQui Ming, LeiZhu Jun