1
Koda Yuki, Sumida Hirosuke, Kyogoku Makoto: Exhaust gas purifying catalyst. Mazda Motor, April 12, 2000: EP0992276-A1 (14 worldwide citation)

An exhaust gas purifying catalyst includes at least an under catalytic layer disposed on a substrate containing a NOx absorbent which absorbs NOx in exhaust gas under existence of oxygen, releases absorbed NOx when an oxygen concentration of exhaust gas lowers and is restrained from absorbing NOx by ...


2
Sumida Hirosuke, Koda Yuki, Kyogoku Makoto, Iwakuni Hideharu, Yamada Hiroshi, Okamoto Kenji, Takami Akihide: Exhaust gas purifying catalyst and system and method of producing the catalyst. Mazda Motor, March 31, 1999: EP0905354-A2 (10 worldwide citation)

An exhaust gas purifying system and a catalyst (14,31) used for the system prevents NOx absorbent from being poisoned by a sulphur compound to keep NOx absorption performance. The catalyst has at least an inner (26) and an outer layer (28,29) on a support material (25), the inner layer having NOx ab ...


3
Okamoto Kenji, Yamada Hiroshi, Miyoshi Seiji, Takami Akihide, Yamamoto Kenichi, Sumida Hirosuke: Exhaust gas purification catalyst and exhaust gas purification system. Mazda Motor, January 2, 2002: EP1166858-A2 (6 worldwide citation)

In a catalyst for exhaust gas purification which comprises (a) a NOx absorbent material which absorbs NOx in an exhaust gas in an environment of excess oxygen whose exhaust gas oxygen concentration level is high, whereas, when the exhaust gas oxygen concentration level becomes lower in a given tempe ...


4
Ueoka Toshitsugu, Kurokawa Takahiro, Okamoto Kenji, Sumida Hirosuke: Catalyst for purifying exhaust gas. Mazda Motor, July 29, 1998: EP0855210-A2 (4 worldwide citation)

A catalyst material for purifying exhaust gases from an automobile engine comprises a porous support material having a pore diameter between 0.7 and 20.0 nm and catalytic metals in the form of a mixture of a noble metal and a IIa group metal which is dispersed in and supported by the porous support ...


5
Akamine Masaaki, Iwakuni Hideharu, Sumida Hirosuke: Exhaust gas purification catalyst. Mazda Motor, December 6, 2006: EP1728552-A1 (4 worldwide citation)

In an exhaust gas purification catalyst, particles (12) of a catalytic metal-doped, Ce-Zr-based second mixed oxide are carried on the surfaces of particles (11) of a Ce-Zr-based first mixed oxide. The second mixed oxide contains Ce and Zr as metals forming its constituents. Catalytic metal atoms (13 ...


6
Minoshima Koji, Miyoshi Seiji, Iwakuni Hideharu, Takami Akihide, Sumida Hirosuke: Exhaust gas purification catalyst and manufacturing method thereof. Mazda Motor, October 29, 2008: EP1985354-A1 (3 worldwide citation)

In an exhaust gas purification catalyst that contains an oxygen storage component containing Ce and Zr, alumina and a catalytic metal, a plurality of primary panicles of the oxygen storage component and a plurality of primary particles of the alumina agglomerate to form each of mixed oxide particles ...


7
Miyoshi Seiji, Okamoto Kenji, Sumida Hirosuke, Takami Akihide, Yamada Hiroshi, Yamamoto Kenichi: Exhaust gas purification catalyst and exhaust gas purification system. Mazda Motor Corporation, January 9, 2002: KR1020010035037 (1 worldwide citation)

PURPOSE: Provided is an exhaust gas purification catalyst, which is capable of enhancing the NOx absorption efficiency of a NOx absorbent material, i.e., the lean NOx purification rate, in an environment of excess oxygen of high-level exhaust gas oxygen concentration while achieving an improvement i ...


8
AKAMINE MASAAKI, SHIGETSU MASAHIKO, SUMIDA HIROSUKE, FUKUSHIMA TATSUTO, MIYOSHI SEIJI, YAMADA HIROSHI, IWAKUNI HIDEHARU, HARADA KOICHIRO: [fr] Catalyseur de purification des gaz d├ęchappement, [de] Abgasreinigungskatalysator, [en] Exhaust gas purification catalyst. Mazda Motor, December 2, 2009: EP2127729-A1

[en] An exhaust gas purification catalyst includes a catalyst layer (2) formed on a support (1). The catalyst layer (2) contains Ce-containing oxide particles (3) having an oxygen storage/release capacity and a catalytic metal (5). The catalyst layer (2) further contains a large number of iron oxide ...


9
Yamada Hiroshi, Suzuki Kenji, Harada Koichiro, Okamoto Kenji, Takami Akihide, Mineoi Susumu, Sumida Hirosuke: Particulate filter. Mazda Motor, April 8, 2009: EP2044999-A1

Disclosed is a particulate filter, which is adapted to be disposed in an exhaust passage of an engine to trap particulate matter contained in exhaust gas discharged from the engine. The particulate filter comprises a filter body having a porous partition wall which defines a plurality of exhaust gas ...


10
Tsushio Yoshinori, Nishijima Tuyoshi, Shimizu Taeko, Kitayama Ichiro, Takayama Osamu, Sumida Hirosuke: Composition for use in adsorption treatment, products formed with the same, and a method for producing adsorbent using the same. Mazda Motor Corporation, Tsushio Yoshinori, Nishijima Tuyoshi, Shimizu Taeko, Kitayama Ichiro, Takayama Osamu, Sumida Hirosuke, KOTANI Etsuji, June 22, 2000: WO/2000/035580

An object of the present invention is to provide a composition for use in adsorption treatment which is easy to handle; a method for easily preparing the composition in the form of grains without inhibiting its adsorption ability; products such as an adsorption treatment device and a filter for air- ...