1
Yamada Hiroshi, Takami Akihide, Iwakuni Hideharu, Kyogoku Makoto, Okamoto Kenji: Catalyst for purifying exhaust gas and manufacturing method thereof. Mazda Motor, July 28, 1999: EP0931590-A1 (23 worldwide citation)

Catalyst manufactured by loading first noble metal on a support and loading second noble metal on a second support, preparing a coating containing both components on a carrier and impregnating the catalyst layer with a NOx adsorbing material such as alkaline (earth) metal or rare earth metal compoun ...


2
Iwakuni Hideharu, Kyogoku Makoto, Yamada Hiroshi, Takami Akihide: Exhaust gas purifying catalyst. Mazda Motor, June 14, 2000: EP1008378-A1 (14 worldwide citation)

An exhaust gas purifying catalyst contains a NOx absorbing component which comprises at least one kind of element selected from a group of alkaline earth metals, a group of alkaline metals and a group of rare earth elements and a component, other than the NOx absorbing component, selected between K ...


3
Miyoshi Seiji, Takami Akihide, Yamada Hiroshi, Akamine Massaki, Iwakuni Hideharu, Harada Koichiro: Exhaust gas purification catalyst. Mazda Motor, June 14, 2006: EP1669135-A1 (11 worldwide citation)

The present invention relates to a catalyst converter (1) comprising a carrier (2) having exhaust gas passages (3) therein, a lower catalyst layer (6) coated over the carrier (2) and comprising a hollow oxide powder loaded with catalytic metal, and an upper catalyst layer (7) coated over the lower c ...


4
Harada Koichiro, Tsushio Yoshinori, Takami Akihide, Iwakuni Hideharu, Yamada Hiroshi, Miyoshi Seiji: Diesel particulate filter. Mazda Motor, November 23, 2005: EP1598104-A1 (11 worldwide citation)

A filter (1) for trapping particulate matter in an exhaust gas is disposed in an exhaust passage of a diesel engine, and a washcoat layer (7) containing mixed oxide particles including Ce and Zr is formed on wall surfaces of exhaust gas channels (2, 3, 6) in the filter. The washcoat layer contains, ...


5
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 ...


6
Kawamoto Tomohiko, Fujita Katsuyuki, Tokuyama Tadashi, Shigetsu Masahiko, Akamine Masaaki, Kawabata Hisaya, Iwakuni Hideharu, Takami Akihide: Exhaust gas purifying catalyst. Tokyo Roki, Mazda Motor, April 6, 2005: EP1520616-A1 (5 worldwide citation)

An exhaust gas purifying catalyst includes a carrier and a catalyst layer provided on the carrier. The catalyst layer includes active Al2O3 on which a noble metal is carried, an oxygen storage agent on which Rh is carried, Al2O3 coated with ZrO2 on which Rh is carried, and a binder material.


7
Miyoshi Seiji, Iwakuni Hideharu, Minoshima Koji, Yamada Hiroshi, Akamine Masaaki, Takami Akihide: Exhaust gas catalytic conversion system. Mazda Motor, March 19, 2008: EP1900416-A2 (5 worldwide citation)

An upstream catalyst (3) and a downstream catalyst (4) are disposed in an exhaust passage (2) of an engine (1). The downstream catalyst (4) contains in the same catalyst layer thereof Rh-doped CeZrNd mixed oxide particles on which Rh is supported and active alumina particles on which Pt is supported ...


8
Minoshima Koji, Takami Akihide, Iwakuni Hideharu, Miyoshi Seiji, Yamada Hiroshi: Exhaust gas purifying catalyst and exhaust gas purifying method. Mazda Motor, November 28, 2007: EP1859851-A1 (4 worldwide citation)

Disclosed is an exhaust gas purifying catalyst, which comprises a catalyst layer formed on a honeycomb-shaped support. The catalyst layer is formed by mixing a catalyst powder (A) consisting of a composite oxide (RhZrCeNdO) which contains at least Ce, Zr, and a catalytic noble metal composition, and ...


9
Takami Akihide, Iwakuni Hideharu, Kyogoku Makoto, Yamada Hiroshi, Okamoto Kenji, Taga Junichi, Watanabe Tomomi, Nishimura Hirofumi, Nakazumi Tadataka, Kuji Youichi, Kuroki Masayuki: Exhaust gas purifying system for engine. Mazda Motor, February 10, 1999: EP0896134-A2 (4 worldwide citation)

An exhaust gas purifying system includes an exhaust gas purifying catalyst (14) having a nitrogen oxide absorbing material which is installed in an exhaust line (13) of an engine (1) and performs split fuel injection to inject fuel directly into each combustion chamber (5) partly during a suction st ...


10
Iwakuni Hideharu, Sadai Asako, Akamine Masaaki, Miyoshi Seiji, Yamada Hiroshi, Takami Akihide: Exhaust gas purification catalyst and oxygen storage component for the same. Mazda Motor, March 8, 2006: EP1632288-A1 (4 worldwide citation)

In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer (6) that is formed on walls (5) of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO ...