Patents by Inventor Syunsuke Kato

Syunsuke Kato 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).

  • METHANE COMBUSTION CATALYST, METHOD FOR PRODUCING THE SAME AND METHOD FOR PURIFYING COMBUSTION EXHAUST GAS
    Publication number: 20230173464
    Abstract: The present invention relates to a methane combustion catalyst including platinum and iridium supported on a tin oxide carrier for combusting methane in a combustion exhaust gas containing sulfur oxide. In the methane combustion catalyst, a ratio RTO of platinum oxides to metal platinum is 8.00 or more, wherein the ratio RTO is based on existence percentages of the metal platinum (Pt) and the platinum oxides (PtO and PtO2) obtained from a platinum 4f spectrum analyzed and measured by X-ray photoelectron spectroscopy (XPS) and calculated in accordance with the following expression. In the following expression, RPt is an existence percentage of the metal platinum (Pt), RPto is an existence percentage of PtO, and RPto2 is an existence percentage of PtO2.
    Type: Application
    Filed: May 6, 2021
    Publication date: June 8, 2023
    Applicant: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kazutaka TAKEDA, Syunsuke KATO, Shunji KIKUHARA, Kanako KURAHASHI, Tatsushi MINAMI, Masahiro SHIRAKI
  • Metal colloidal solution and method for producing the same
    Patent number: 10220377
    Abstract: The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 5, 2019
    Assignee: TANAKA KIKINZOKU KOGOY K.K.
    Inventors: Yuusuke Ohshima, Hitoshi Kubo, Tomoko Ishikawa, Noriaki Nakamura, Junichi Taniuchi, Yoshiteru Tsuchiya, Hiroaki Takahashi, Hidenori Takanezawa, Kenichi Inoue, Syunsuke Kato, Hirokazu Shiraishi
  • METAL COLLOIDAL SOLUTION AND METHOD FOR PRODUCING SAME
    Publication number: 20140357470
    Abstract: The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.
    Type: Application
    Filed: February 8, 2013
    Publication date: December 4, 2014
    Applicant: Tanaka Kikinzoku Kogyo K.K.
    Inventors: Yuusuke Ohshima, Hitoshi Kubo, Tomoko Ishikawa, Noriaki Nakamura, Junichi Taniuchi, Yoshiteru Tsuchiya, Hiroaki Takahashi, Hidenori Takanezawa, Kenichi Inoue, Syunsuke Kato, Hirokazu Shiraishi