Patents by Inventor Akichika Kumatani

Akichika Kumatani 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).

  • Catalyst, liquid composition, electrode, catalyst electrode for electrochemical reaction, fuel cell, and air battery
    Patent number: 11772084
    Abstract: The present invention provides a catalyst which has oxygen reduction catalytic ability surpassing that of a platinum-carrying carbon material. This catalyst comprises a carbon material and a metal complex represented by formula (1). In formula (1), X1 to X8 each independently represent a hydrogen atom or a halogen atom, D1 to D4 each represent a nitrogen atom or a carbon atom wherein the carbon atom has bound thereto a hydrogen atom or a halogen atom, and M represents a metallic atom.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 3, 2023
    Assignee: Azul Energy Inc.
    Inventors: Hiroshi Yabu, Tomokazu Matsue, Akichika Kumatani, Hiroya Abe, Yutaro Hirai, Kohei Nozaki
  • CATALYST, LIQUID COMPOSITION, ELECTRODE, CATALYST ELECTRODE FOR ELECTROCHEMICAL REACTION, FUEL CELL, AND AIR BATTERY
    Publication number: 20210308659
    Abstract: The present invention provides a catalyst which has oxygen reduction catalytic ability surpassing that of a platinum-carrying carbon material. This catalyst comprises a carbon material and a metal complex represented by formula (1). In formula (1), X1 to X8 each independently represent a hydrogen atom or a halogen atom, D1 to D4 each represent a nitrogen atom or a carbon atom wherein the carbon atom has bound thereto a hydrogen atom or a halogen atom, and M represents a metallic atom.
    Type: Application
    Filed: December 26, 2018
    Publication date: October 7, 2021
    Inventors: Hiroshi Yabu, Tomokazu Matsue, Akichika Kumatani, Hiroya Abe, Yutaro Hirai, Kohei Nozaki