Patents by Inventor Masafumi Asahi

Masafumi Asahi 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).

  • Electrochemical oxygen reduction catalyst
    Patent number: 11962018
    Abstract: An electrochemical oxygen reduction catalyst comprising platinum-containing nanoparticles and at least one member selected from the group consisting of a melamine compound, a thiocyanuric acid compound, and a polymer containing the melamine compound or the thiocyanuric acid compound as a monomer is an electrochemical oxygen reduction catalyst having a high oxygen reduction activity (small overvoltage).
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: April 16, 2024
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventor: Masafumi Asahi
  • ELECTROCHEMICAL OXYGEN REDUCTION CATALYST
    Publication number: 20220416258
    Abstract: Provided is an electrochemical oxygen reduction catalyst comprising platinum-containing nanoparticles and at least one member selected from the group consisting of a specific polymer containing a melamine compound as a monomer and a specific melamine compound, the electrochemical oxygen reduction catalyst having not only high oxygen reduction activity (low overvoltage), but also high durability at 70 to 85° C., which are practical temperature conditions.
    Type: Application
    Filed: October 28, 2020
    Publication date: December 29, 2022
    Inventors: Masafumi ASAHI, Shin-ichi YAMAZAKI
  • ELECTROCHEMICAL OXYGEN REDUCTION CATALYST
    Publication number: 20210384524
    Abstract: An electrochemical oxygen reduction catalyst comprising platinum-containing nanoparticles and at least one member selected from the group consisting of a melamine compound, a thiocyanuric acid compound, and a polymer containing the melamine compound or the thiocyanuric acid compound as a monomer is an electrochemical oxygen reduction catalyst having a high oxygen reduction activity (small overvoltage).
    Type: Application
    Filed: May 15, 2019
    Publication date: December 9, 2021
    Inventor: Masafumi Asahi