Patents by Inventor Hiromu WATANBE

Hiromu WATANBE 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).

  • Tin oxide, electrode catalyst for fuel cells, membrane electrode assembly, and solid polymer fuel cell
    Patent number: 10615425
    Abstract: Disclosed is a tin oxide containing antimony and at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth. The antimony and the at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth are preferably dissolved in a solid state in tin oxide. The ratio of the number of moles of the element A to the number of moles of antimony, i.e., [(the number of moles of the element A/the number of moles of antimony)], is preferably 0.1 to 10.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 7, 2020
    Assignee: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Koichi Miyake, Susumu Takahashi, Hiromu Watanbe, Naohiko Abe, Ryoma Tsukuda, Kenichi Amitani, Koji Taniguchi, Hiroki Takahashi, Yoshihiro Yoneda, Kazuhiko Kato
  • TIN OXIDE, ELECTRODE CATALYST FOR FUEL CELLS, MEMBRANE ELECTRODE ASSEMBLY, AND SOLID POLYMER FUEL CELL
    Publication number: 20180175398
    Abstract: Disclosed is a tin oxide containing antimony and at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth. The antimony and the at least one element A selected from the group consisting of tantalum, tungsten, niobium, and bismuth are preferably dissolved in a solid state in tin oxide. The ratio of the number of moles of the element A to the number of moles of antimony, i.e., [(the number of moles of the element A/the number of moles of antimony)], is preferably 0.1 to 10.
    Type: Application
    Filed: July 21, 2016
    Publication date: June 21, 2018
    Inventors: Koichi MIYAKE, Susumu TAKAHASHI, Hiromu WATANBE, Naohiko ABE, Ryoma TSUKUDA, Kenichi AMITANI, Koji TANIGUCHI, Hiroki TAKAHASHI, Yoshihiro YONEDA, Kazuhiko KATO