Patents by Inventor Kazuya ARASHIBA

Kazuya ARASHIBA 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).

  • Publication number: 20240110293
    Abstract: An ammonia manufacturing apparatus of an embodiment includes: an electrochemical reaction cell including: a first reaction tank in which a reduction electrode is arranged and gaseous nitrogen is supplied; a second reaction tank in which an oxidation electrode is arranged and an electrolytic solution containing water or water vapor is supplied; and a diaphragm provided between the first reaction tank and the second reaction tank. In the ammonia manufacturing apparatus of the embodiment, the reduction electrode includes a reduction catalyst that reduces nitrogen to produce ammonia, a porous carbon material that supports the reduction catalyst, and an organic polymer material that binds the porous carbon material. The porous carbon material has pores with a BET average pore size of 1 nm or more and 15 nm or less.
    Type: Application
    Filed: March 16, 2023
    Publication date: April 4, 2024
    Applicants: KABUSHIKI KAISHA TOSHIBA, The University of Tokyo
    Inventors: Jun TAMURA, Ryota KITAGAWA, Koji MIZUGUCHI, Yoshitsune SUGANO, Yoshiaki NISHIBAYASHI, Kazuya ARASHIBA
  • Publication number: 20230295818
    Abstract: A method for producing ammonia involves producing ammonia from molecular nitrogen in a production apparatus for performing electrolysis by supplying electrons from a power source, protons from a proton source and molecular nitrogen from a device for supplying a nitrogen gas while in the presence of a solid catalyst and a complex in a cathode. For example, a molybdenum complex represented by formula (A1) or formula (B2) as the complex, and a platinum catalyst or a platinum catalyst/gold catalyst combination as the solid catalyst are used.
    Type: Application
    Filed: August 16, 2021
    Publication date: September 21, 2023
    Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATION
    Inventors: Yoshiaki NISHIBAYASHI, Kazuya ARASHIBA, Yuya ASHIDA, Shoichi KONDO, Takamasa KIKUCHI
  • Publication number: 20230002917
    Abstract: An ammonia production method is a method of producing ammonia from nitrogen molecule using electron supplied from a power supply in the presence of a complex and a proton source. The complex used is, for example, a molybdenum complex (1) that is carried on Merrifield resin.
    Type: Application
    Filed: September 4, 2020
    Publication date: January 5, 2023
    Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL CORPORATION
    Inventors: Yoshiaki NISHIBAYASHI, Kazuya ARASHIBA, Yuya ASHIDA, Shoichi KONDO, Takamasa KIKUCHI