Patents by Inventor Fumihiro Uchikawa

Fumihiro Uchikawa 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).

  • Method of producing noble metal-supported powder, noble metal-supported powder and exhaust gas purifying catalyst
    Patent number: 8518846
    Abstract: In the present invention, slurry is formed by mixing noble metal-supported powder particles (3) and a binder (4) with each other in a liquid (Step S1), and the noble metal-supported powder particles (3) are dispersed by applying vibrations to the slurry (Step S2), and thereafter, the slurry is spray dried while keeping a state where the noble metal-supported powder particles (3) are dispersed (Step S3), whereby noble metal-supported powder (1) is produced. In the noble metal-supported powder (1) produced by such a method, pores through which exhaust gas flows are formed appropriately, and accordingly, exhaust gas purification performance can be enhanced.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: August 27, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Fumihiro Uchikawa, Yoshiaki Hiramoto, Haruhiko Shibayama, Keita Manyu
  • Method of producing noble metal-supported powder, noble metal-supported powder and exhaust gas purifying catalyst
    Patent number: 8324127
    Abstract: In the present invention, slurry is formed by mixing noble metal-supported powder particles (3) and a binder (4) with each other in a liquid (Step S1), and the noble metal-supported powder particles (3) are dispersed by applying vibrations to the slurry (Step S2), and thereafter, the slurry is spray dried while keeping a state where the noble metal-supported powder particles (3) are dispersed (Step S3), whereby noble metal-supported powder (1) is produced. In the noble metal-supported powder (1) produced by such a method, pores through which exhaust gas flows are formed appropriately, and accordingly, exhaust gas purification performance can be enhanced.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: December 4, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Fumihiro Uchikawa, Yoshiaki Hiramoto, Haruhiko Shibayama, Keita Manyu
  • METHOD OF PRODUCING NOBLE METAL-SUPPORTED POWDER, NOBLE METAL-SUPPORTED POWDER AND EXHAUST GAS PURIFYING CATALYST
    Publication number: 20120302430
    Abstract: In the present invention, slurry is formed by mixing noble metal-supported powder particles (3) and a binder (4) with each other in a liquid (Step S1), and the noble metal-supported powder particles (3) are dispersed by applying vibrations to the slurry (Step S2), and thereafter, the slurry is spray dried while keeping a state where the noble metal-supported powder particles (3) are dispersed (Step S3), whereby noble metal-supported powder (1) is produced. In the noble metal-supported powder (1) produced by such a method, pores through which exhaust gas flows are formed appropriately, and accordingly, exhaust gas purification performance can be enhanced.
    Type: Application
    Filed: August 10, 2012
    Publication date: November 29, 2012
    Inventors: Fumihiro Uchikawa, Yoshiaki Hiramoto, Haruhiko Shibayama, Keita Manyu
  • METHOD OF PRODUCING NOBLE METAL-SUPPORTED POWDER, NOBLE METAL-SUPPORTED POWDER AND EXHAUST GAS PURIFYING CATALYST
    Publication number: 20100261602
    Abstract: In the present invention, slurry is formed by mixing noble metal-supported powder particles (3) and a binder (4) with each other in a liquid (Step S1), and the noble metal-supported powder particles (3) are dispersed by applying vibrations to the slurry (Step S2), and thereafter, the slurry is spray dried while keeping a state where the noble metal-supported powder particles (3) are dispersed (Step S3), whereby noble metal-supported powder (1) is produced. In the noble metal-supported powder (1) produced by such a method, pores through which exhaust gas flows are formed appropriately, and accordingly, exhaust gas purification performance can be enhanced.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 14, 2010
    Inventors: Fumihiro Uchikawa, Yoshiaki Hiramoto, Haruhiko Shibayama, Keita Manyu
  • Catalysts for the purification of exhaust gas
    Patent number: 5248650
    Abstract: A catalyst for the purification of exhaust gas comprises a combination of palladium carried on cerium oxide and palladium carried on alumina, or further rhodium carried on alumina, in which a weight ratio of palladium carried on cerium oxide to palladium carried on alumina is 2:8-8:2. Preferably, the cerium oxide contains at least one of zirconium, lanthanum, neodymium and praseodymium, or the alumina contains at least one of zirconium, lanthanum, neodymium, cerium, strontium and barium. This catalyst develops excellent purification performances against exhaust gas of oxidizing atmosphere to reducing atmosphere.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: September 28, 1993
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toru Sekiba, Akihide Okada, Fumihiro Uchikawa