Patents by Inventor Yoriko Hasegawa

Yoriko Hasegawa 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: 20190245212
    Abstract: An oxygen evolution catalyst includes a core and a shell covering the surface of the core. The core includes ruthenium oxide or metal ruthenium in at least a surface portion. The shell includes titania or a composite oxide of titanium and ruthenium. Such an oxygen evolution catalyst is obtained by (a) dispersing core particles each including ruthenium oxide or metal ruthenium in at least a surface portion in a solvent to obtain a dispersion, (b) adding a Ti source to the dispersion to produce precursor particles in which the surface of each core particle is covered with a titania precursor, and (c) collecting the precursor particles from the dispersion and heat-treating the precursor particles after drying.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 8, 2019
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuhei YOSHINO, Kensaku KODAMA, Yoshio SAGESHIMA, Keiichiro OISHI, Yoriko HASEGAWA, Noriyuki KITAO
  • Patent number: 7935653
    Abstract: A metal oxide nanoporous material comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides. The metal oxide nanoporous material has nanopores, each with a diameter of 10 nm or smaller, in which the metal oxides are dispersed homogeneously in the wall forming the nanopores.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: May 3, 2011
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Takashi Shimazu, Ryusuke Tsuji, Hideo Sobukawa, Yoshiki Seno, Yoriko Hasegawa
  • Publication number: 20070215009
    Abstract: A metal oxide nanoporous material comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides. The metal oxide nanoporous material has nanopores, each with a diameter of 10 nm or smaller, in which the metal oxides are dispersed homogeneously in the wall forming the nanopores.
    Type: Application
    Filed: June 9, 2005
    Publication date: September 20, 2007
    Applicant: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Takashi Shimazu, Ryusuke Tsuji, Hideo Sobukawa, Yoshiki Seno, Yoriko Hasegawa
  • Patent number: 6911414
    Abstract: A catalyst for purifying an exhaust gas includes zirconia particles, and a transition metal layer, covering at least a part of a surface of the zirconia particles in a lamellar manner. It can reduce the emission of particulate materials (i.e., P.M.), such as SOF and sulfates, because the contacting area enlarges between the transition metal layer and materials to be purified.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: June 28, 2005
    Assignee: Cataler Corporation
    Inventors: Mareo Kimura, Yoriko Hasegawa, Norihiko Aono, Seiji Tanaka
  • Patent number: 6649133
    Abstract: A catalyst for purifying an exhaust gas includes a support including rutile titania, an NOx storage material including at least on element selected from alkali metals, alkaline-earth metals and rare-earth elements and loaded on the support, and a noble metal loaded on the support. Since the rutile TiO2 and the NOx storage material form a fine composite oxide, the NOx storage material is likely to decompose even when it is subject to the sulfur poisoning, and the NOx storage material easily recovers the NOx storage ability. Therefore, the NOx storage material can be inhibited from the sulfur poisoning, and a high NOx conversion ratio can be maintained even after the service at an elevated temperature.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: November 18, 2003
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Yoriko Hasegawa, Mareo Kimura, Naoki Takahashi, Hiromasa Suzuki, Riemi Tanizawa, Kazuaki Sobue
  • Publication number: 20020098975
    Abstract: A catalyst for purifying an exhaust gas includes zirconia particles, and a transition metal layer, covering at least a part of a surface of the zirconia particles in a lamellar manner. It can reduce the emission of particulate materials (i.e., P.M.), such as SOF and sulfates, because the contacting area enlarges between the transition metal layer and materials to be purified.
    Type: Application
    Filed: November 15, 2001
    Publication date: July 25, 2002
    Applicant: CATALER CORPORATION
    Inventors: Mareo Kimura, Yoriko Hasegawa, Norihiko Aono, Seiji Tanaka