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1. 发明授权

US5004751A Hydantoin derivatives 失效
标题翻译：乙内酰脲衍生物
公开(公告)号：US5004751A
公开(公告)日：1991-04-02
申请号：US426021
申请日：1989-10-24
申请人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
发明人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
IPC分类号： C07D209/30 , C07D213/70 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
CPC分类号： C07D213/70 , C07D209/30 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
摘要： The present invention relates to novel hydantoin derivatives, processes for producing said hydantoin derivatives, pharmaceutical compositions containing at least one of said hydantoin derivatives as aldose reductase inhibitors and novel intermediate compounds in the synthesis of said hydantoin derivatives.The present invention is based on the selection of a hydantoin which is bonded by a sulfonyl group to various substituents at the 1-position of the hydantoin skeleton.The compounds of the present invention have a strong inhibitory activity against aldose reductase. These compounds are extremely useful for the treatment and/or prevention of various forms of diabetic complications based on the accumulation of polyol metabolites.
摘要翻译：本发明涉及新的乙内酰脲衍生物，生产所述乙内酰脲衍生物的方法，含有至少一种所述乙内酰脲衍生物作为醛糖还原酶抑制剂的药物组合物和在所述乙内酰脲衍生物合成中的新型中间体化合物。本发明基于通过磺酰基与乙内酰素骨架的1位上各种取代基的乙内酰脲的选择。本发明的化合物对醛糖还原酶具有很强的抑制活性。基于多元醇代谢物的积累，这些化合物对治疗和/或预防各种形式的糖尿病并发症非常有用。

2. 再颁专利

USRE35279E Hydantoin derivatives 失效
标题翻译：乙内酰脲衍生物
公开(公告)号：USRE35279E
公开(公告)日：1996-06-18
申请号：US197705
申请日：1994-02-17
申请人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
发明人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
IPC分类号： C07D209/30 , C07D213/70 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12 , A61K31/44 , C07D211/06
CPC分类号： C07D213/70 , C07D209/30 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
摘要： The present invention relates to novel hydantoin derivatives, processes for producing said hydantoin derivatives, pharmaceutical compositions containing at least one of said hydantoin derivatives as aldose reductase inhibitors and novel intermediate compounds in the synthesis of said hydantoin derivatives.The present invention is based on the selection of a hydantoin which is bonded by a sulfonyl group to various substituents at the 1-position of the hydantoin skeleton.The compounds of the present invention have a strong inhibitory activity against aldose reductase. These compounds are extremely useful for the treatment and/or prevention of various forms of diabetic complications based on the accumulation of polyol metabolites.
摘要翻译：本发明涉及新的乙内酰脲衍生物，生产所述乙内酰脲衍生物的方法，含有至少一种所述乙内酰脲衍生物作为醛糖还原酶抑制剂的药物组合物和在所述乙内酰脲衍生物合成中的新型中间体化合物。本发明基于通过磺酰基与乙内酰素骨架的1位上各种取代基的乙内酰脲的选择。本发明的化合物对醛糖还原酶具有很强的抑制活性。基于多元醇代谢物的积累，这些化合物对治疗和/或预防各种形式的糖尿病并发症非常有用。

3. 发明授权

US5232936A Hydantoin derivatives 失效
标题翻译：乙内酰脲衍生物
公开(公告)号：US5232936A
公开(公告)日：1993-08-03
申请号：US644632
申请日：1991-01-23
申请人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
发明人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
IPC分类号： C07D209/30 , C07D213/70 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
CPC分类号： C07D213/70 , C07D209/30 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
摘要： The present invention relates to novel hydantoin derivatives, processes for producing said hydantoin derivatives, pharmaceutical compositions containing at least one of said hydantoin derivatives as aldose reductase inhibitors and novel intermediate compounds in the synthesis of said hydantoin derivatives.The present invention is based on the selection of a hydantoin which is bonded by a sulfonyl group to various substituents at the 1-position of the hydantoin skeleton.The compounds of the present invention have a strong inhibitory activity against aldose reductase. These compounds are extremely useful for the treatment and/or prevention of various forms of diabetic complications based on the accumulation of polyol metabolites.
摘要翻译：本发明涉及新的乙内酰脲衍生物，生产所述乙内酰脲衍生物的方法，含有至少一种所述乙内酰脲衍生物作为醛糖还原酶抑制剂的药物组合物和在所述乙内酰脲衍生物合成中的新型中间体化合物。本发明基于通过磺酰基与乙内酰素骨架的1位上各种取代基的乙内酰脲的选择。本发明的化合物对醛糖还原酶具有很强的抑制活性。基于多元醇代谢物的积累，这些化合物对治疗和/或预防各种形式的糖尿病并发症非常有用。

4. 发明授权

US5202339A Hydantoin derivatives 失效
标题翻译：乙内酰脲衍生物
公开(公告)号：US5202339A
公开(公告)日：1993-04-13
申请号：US660562
申请日：1991-02-25
申请人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
发明人： Ei Mochida , Kimihiro Murakami , Kazuo Kato , Katsuaki Kato , Jun Okuda , Ichitomo Miwa
IPC分类号： A61K31/415 , B05B15/04 , C07D209/30 , C07D213/70 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
CPC分类号： C07D213/70 , A61K31/415 , B05B15/0425 , C07D209/30 , C07D233/80 , C07D235/28 , C07D249/18 , C07D261/20 , C07D275/04 , C07D277/54 , C07D277/80 , C07D307/64 , C07D307/82 , C07D311/14 , C07D311/24 , C07D333/34 , C07D333/62 , C07D333/72 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/10 , C07D417/12
摘要： The present invention relates to novel hydantoin derivatives, processes for producing said hydantoin derivatives, pharmaceutical compositions containing at least one of said hydantoin derivatives as aldose reductase inhibitors and novel intermediate compounds in the synthesis of said hydantoin derivatives and pharmaceutical compositions containing at least one of hydantoin derivatives as hypoglycemic as well as hypolipidemic agents.The present invention is based on the selection of a hydantoin which is bonded by a sulfonyl group to various substituents at the 1-position of the hydantoin skeleton. The compounds of the present invention have a strong inhibitory activity against aldose reductase. These compounds are extremely useful for the treatment and/or prevention of various forms of diabetic complications based on the accumulation of polyol metabolites.The compounds of the present invention represent a satisfactory hypoglycemic as well as hypolipidemic activity. These compounds are extremely useful for the treatment and/or prevention of diabetes mellitus with or without hyperlipidemia. It is indicated that the compounds of the present invention are useful for the treatment and/or prevention of diabetic complications such as somatic or autonomic neuropathy, cataract, retinopathy, nephropathy or microangiopathy. It is also indicated that the compounds of the present invention are useful for the treatment and/or prevention of hyperlipidemia.
摘要翻译：本发明涉及新的乙内酰脲衍生物，生产所述乙内酰脲衍生物的方法，含有至少一种所述乙内酰脲衍生物作为醛糖还原酶抑制剂的药物组合物和所述乙内酰脲衍生物的合成中的新型中间体化合物和含有乙内酰脲中至少一种的药物组合物衍生物作为低血糖以及降血脂药。本发明基于通过磺酰基与乙内酰脲骨架1位上各种取代基的乙内酰脲的选择。本发明的化合物对醛糖还原酶具有很强的抑制活性。基于多元醇代谢物的积累，这些化合物对于治疗和/或预防各种形式的糖尿病并发症非常有用。本发明的化合物代表令人满意的低血糖以及降血脂活性。这些化合物对于治疗和/或预防具有或不具有高脂血症的糖尿病非常有用。表明本发明的化合物可用于治疗和/或预防糖尿病并发症如体细胞或自主神经病，白内障，视网膜病，肾病或微血管病变。还表明本发明的化合物可用于治疗和/或预防高脂血症。

5. 发明授权

US4914099A Hydantoin derivatives as aldose reductase inhibitors 失效
标题翻译：乙内酰脲衍生物作为醛糖还原酶抑制剂
公开(公告)号：US4914099A
公开(公告)日：1990-04-03
申请号：US235557
申请日：1988-08-24
申请人： Ei Mochida , Kazuo Kato , Katsuaki Kato , Ichitomo Miwa , Jun Okuda
发明人： Ei Mochida , Kazuo Kato , Katsuaki Kato , Ichitomo Miwa , Jun Okuda
IPC分类号： C07D233/86 , A61K31/415 , A61K31/4166 , A61P3/08 , A61P3/10 , A61P13/02 , A61P15/00 , A61P25/02 , A61P27/02 , A61P27/12 , A61P43/00 , C07C311/19 , C07D213/70 , C07D233/80 , C07D235/28 , C07D255/04 , C07D261/20 , C07D275/04 , C07D277/64 , C07D307/64 , C07D307/82 , C07D311/14 , C07D333/34 , C07D333/54 , C07D333/56 , C07D333/62 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
CPC分类号： C07D213/70 , C07C311/19 , C07D233/80 , C07D235/28 , C07D255/04 , C07D261/20 , C07D275/04 , C07D277/64 , C07D307/64 , C07D307/82 , C07D311/14 , C07D333/34 , C07D333/54 , C07D333/56 , C07D333/62 , C07D401/12 , C07D403/12 , C07D405/12 , C07D409/12 , C07D413/12 , C07D417/12
摘要： The present invention relates to novel hydantoin derivatives, processes for producing said hydantoin derivatives, pharmaceutical compositions containing at least one of said hydantoin derivatives as aldose reductase inhibitors and novel intermediate compounds in the synthesis of said hydantoin derivatives.The present invention is based on the selection of a hydantoin which is bonded by a sulfonyl group to various substituents at the 1-position of the hydantoin skeleton.

6. 发明授权

US08057745B2 Catalyst system for vehicle exhaust gas purification devices, exhaust gas purification device using the same, and method for purification of exhaust gases 有权
标题翻译：用于车辆废气净化装置的催化剂体系，使用该排气净化装置的废气净化装置以及废气净化方法
公开(公告)号：US08057745B2
公开(公告)日：2011-11-15
申请号：US11901009
申请日：2007-09-13
申请人： Yasunori Toyoda , Yoshiro Hirasawa , Katsuaki Kato
发明人： Yasunori Toyoda , Yoshiro Hirasawa , Katsuaki Kato
IPC分类号： B01D50/00
CPC分类号： B01J23/10 , B01D53/945 , B01D53/9477 , B01D2255/407 , B01D2255/9022 , B01J23/63 , B01J35/0006 , B01J37/0036 , B01J37/0244 , B01J37/0248 , B01J37/082 , B01J37/342 , B01J37/349 , F01N3/101 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2330/06 , Y02A50/2324 , Y02T10/22
摘要： The present invention provides a catalyst system for vehicle exhaust gas purification devices which exhibit excellent capacity of removing nitrogen oxide emissions from internal combustion engine exhaust gases when they are brought into contact with the catalyst even when hydrocarbon concentration in exhaust gases varies, exhaust gas purification device using the same and method for purification of exhaust gases.The catalyst system for vehicle exhaust gas purification devices comprises two or more exhaust gas purification catalysts including two different exhaust gas purification catalysts (first and second catalysts), each supported on an inorganic structural carrier and disposed in an exhaust gas passage, wherein the first catalyst is located on the upstream side in the exhaust gas passage, and the second downstream-side catalyst contains a cerium/zirconium-base compound oxide (A), prepared by melting a starting mixture at its melting point or higher, the molten mixture being then cooled to produce an ingot and crushed.
摘要翻译：本发明提供了一种用于车辆废气净化装置的催化剂体系，即使在废气中的烃浓度变化时，也能够从内燃机排气中除去氮氧化物排放物的能力优异，排气净化装置使用相同的方法和净化废气的方法。车辆废气净化装置的催化剂体系包括两种以上的废气净化催化剂，其包含两种不同的排气净化催化剂（第一催化剂和第二催化剂），其分别负载在无机结构载体上并且设置在废气通道中，其中第一催化剂位于废气通道的上游侧，第二下游侧催化剂含有通过在其熔点以上熔化起始混合物而制得的铈/锆基复合氧化物（A），然后将熔融混合物冷却以产生锭并粉碎。

7. 发明授权

US08491847B2 Apparatus of catalyst for purifying exhaust gas and method for purifying exhaust gas 有权
标题翻译：废气净化催化剂装置及排气净化方法
公开(公告)号：US08491847B2
公开(公告)日：2013-07-23
申请号：US12989757
申请日：2009-04-23
申请人： Katsuaki Kato , Yoshiro Hirasawa , Takashi Yamada
发明人： Katsuaki Kato , Yoshiro Hirasawa , Takashi Yamada
IPC分类号： B01D50/00
CPC分类号： B01J35/0006 , B01D53/945 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/204 , B01D2255/206 , B01D2255/20715 , B01D2255/9022 , B01J21/04 , B01J21/066 , B01J23/44 , B01J23/464 , B01J23/58 , B01J23/63 , B01J37/0036 , B01J37/0244 , B01J37/0248 , F01N3/2803 , F01N2510/06 , Y02A50/2324 , Y02T10/22
摘要： An apparatus for purifying exhaust gas exhausted from an internal combustion engine, using two or more honeycomb structure-type catalysts (X) and (Y). The catalyst (X) contains the support material of the zirconium oxide as a main component which loads a Rh component on the support material of zirconium oxide and substantially does not contain a cerium component, and a cerium-containing oxide which substantially does not load the Rh component, and the catalyst (X) does not substantially contain Pt component and Pd component. The catalyst (Y) contains the support material of the cerium-zirconium composite oxide as a main component which loads a Rh component on the support material of cerium-zirconium composite oxide and which contains cerium of 1 to 20% by weight, in an oxide equivalent, and zirconium of 99 to 80% by weight, in an oxide equivalent, and the catalyst (Y) does not substantially contain Pt component and Pd component.
摘要翻译：一种使用两种以上的蜂窝结构型催化剂（X）和（Y）来净化从内燃机排出的废气的装置。催化剂（X）含有氧化锆作为主要成分的载体材料，其负载Rh氧化锆载体材料上并且基本上不含有铈组分的Rh组分和基本上不加载铈的氧化铈 Rh成分，催化剂（X）基本上不含有Pt成分和Pd成分。催化剂（Y）含有作为主要成分的铈 - 锆复合氧化物的载体材料，其在铈锆复合氧化物的载体材料上负载Rh成分，其中含有1至20重量％的铈，氧化物当量和锆为99〜80重量％，氧化物当量，催化剂（Y）基本上不含有Pt成分和Pd成分。

8. 发明申请

US20110041486A1 APPARATUS OF CATALYST FOR PURIFYING EXHAUST GAS AND METHOD FOR PURIFYING EXHAUST GAS 有权
标题翻译：用于净化排气的催化剂装置和净化排气的方法
公开(公告)号：US20110041486A1
公开(公告)日：2011-02-24
申请号：US12989757
申请日：2009-04-23
申请人： Katsuaki Kato , Yoshiro Hirasawa , Takashi Yamada
发明人： Katsuaki Kato , Yoshiro Hirasawa , Takashi Yamada
IPC分类号： F01N3/10 , B01D53/34
CPC分类号： B01J35/0006 , B01D53/945 , B01D53/9477 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/204 , B01D2255/206 , B01D2255/20715 , B01D2255/9022 , B01J21/04 , B01J21/066 , B01J23/44 , B01J23/464 , B01J23/58 , B01J23/63 , B01J37/0036 , B01J37/0244 , B01J37/0248 , F01N3/2803 , F01N2510/06 , Y02A50/2324 , Y02T10/22
摘要： An apparatus of a catalyst for purifying exhaust gas suitable as a three-way catalyst (TWC) apparatus to be used for purifying carbon monoxide (CO), a hydrocarbon (HC) and a nitrogen oxide (NOx) in exhaust gas exhausted from a gasoline automobile, as well as a method for purifying exhaust gas.This apparatus is provided by an apparatus of a catalyst for purifying exhaust gas for purifying a hydrocarbon (HC), carbon monoxide (CO) and a nitrogen oxide (NOx), by providing two or more honeycomb structure-type catalysts, wherein the surface of a honeycomb-type structure is coated with two or more layers of catalyst compositions, in a flow passage of exhaust gas exhausted from an internal combustion engine, and making exhaust gas pass, characterized in that: the honeycomb structure-type catalyst (X) positioned at the upstream side and the honeycomb structure-type catalyst (Y) positioned at the downstream side contain the catalyst composition consisting a support material of an inorganic oxide which substantially does not contain an Rh component, and loads at least one of a Pt component or a Pd component, a cerium-containing oxide, and an alkaline earth metal component, in all of the lower layers; on the other hand, the catalyst composition of the upper layer loads the Rh component on an oxide support material; does not substantially contain the Pt component and the Pd component; and has a configuration which is different in the honeycomb structure-type catalyst (X) and the honeycomb structure-type catalyst (Y).
摘要翻译：一种用于净化排气的催化剂的装置，其适用于用于净化从汽油排出的废气中的一氧化碳（CO），烃（HC）和氮氧化物（NOx）的三元催化剂（TWC）装置汽车，以及净化废气的方法。该设备由提供两种或多种蜂窝结构型催化剂的用于净化烃（HC），一氧化碳（CO）和氮氧化物（NOx））的净化废气的催化剂提供，其中，在从内燃机排出的排气的流路中涂覆有两层以上催化剂组合物的蜂窝型结构体，使废气通过，其特征在于，所述蜂窝结构型催化剂（X）位于在上游侧，位于下游侧的蜂窝结构型催化剂（Y）含有由不含Rh成分的无机氧化物的载体材料构成的催化剂组合物，负载Pt成分或 Pd组分，含铈氧化物和碱土金属组分，在所有下层中; 另一方面，上层的催化剂组合物将Rh组分负载在氧化物载体材料上; 基本上不含有Pt成分和Pd成分; 蜂窝结构型催化剂（X）和蜂窝结构型催化剂（Y）的结构不同。

9. 发明授权

US4970128A Supported platinum alloy electrocatalyst 失效
标题翻译：支持铂合金电催化剂
公开(公告)号：US4970128A
公开(公告)日：1990-11-13
申请号：US399125
申请日：1989-08-28
申请人： Takashi Itoh , Katsuaki Kato
发明人： Takashi Itoh , Katsuaki Kato
IPC分类号： B01J23/89 , C22C1/00 , C22C5/04 , H01M4/86 , H01M4/88 , H01M4/90 , H01M4/92 , H01M4/96
CPC分类号： H01M4/926 , B01J23/8926 , H01M4/92 , H01M4/96 , H01M2004/8689 , H01M2300/0005 , H01M2300/0008 , H01M2300/0011
摘要： A supported platinum alloy electrocatalyst for an acid electrolyte fuel cell, said electrocatalyst consisting essentially of an electrically conductive powdery carbon carrier and dispersed in, and deposited on, the carrier, an ordered platinum-iron-copper ternary alloy comprising 40 to 60 atomic percent of platinum, 13 to 40 atomic percent of iron and 13 to 40 atomic percent of copper. The electrocatalyst has much better initial activity and lifetime than conventional platinum alone or multi-components alloy electrocatalysts. A process for producing the supported platinum alloy electrocatalyst which comprises depositing copper on a previously formed platinum-iron supported binary ordered alloy, again subjecting the product to an alloying treatment, or depositing iron on the platinum-copper supported binary alloy and then again subjecting the product to an alloying treatment. An electrode for an acid electrolyte fuel cell having an excellent output performance and a long operating life is also provided which comprises the above supported platinum alloy electrocatalyst and a water-repellent binder which are bonded to an electrically conductive and acid-resistant supporting member.

10. 发明申请

US20080066458A1 Catalyst system for vehicle exhaust gas purification devices, exhaust gas purification device using the same, and method for purification of exhaust gases 有权
标题翻译：用于车辆废气净化装置的催化剂体系，使用该排气净化装置的废气净化装置以及废气净化方法
公开(公告)号：US20080066458A1
公开(公告)日：2008-03-20
申请号：US11901009
申请日：2007-09-13
申请人： Yasunori Toyoda , Yoshiro Hirasawa , Katsuaki Kato
发明人： Yasunori Toyoda , Yoshiro Hirasawa , Katsuaki Kato
IPC分类号： F01N3/10 , B01D53/56 , B01J23/00
CPC分类号： B01J23/10 , B01D53/945 , B01D53/9477 , B01D2255/407 , B01D2255/9022 , B01J23/63 , B01J35/0006 , B01J37/0036 , B01J37/0244 , B01J37/0248 , B01J37/082 , B01J37/342 , B01J37/349 , F01N3/101 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2330/06 , Y02A50/2324 , Y02T10/22
摘要： The present invention provides a catalyst system for vehicle exhaust gas purification devices which exhibit excellent capacity of removing nitrogen oxide emissions from internal combustion engine exhaust gases when they are brought into contact with the catalyst even when hydrocarbon concentration in exhaust gases varies, exhaust gas purification device using the same and method for purification of exhaust gases.The catalyst system for vehicle exhaust gas purification devices comprises two or more exhaust gas purification catalysts including two different exhaust gas purification catalysts (first and second catalysts), each supported on an inorganic structural carrier and disposed in an exhaust gas passage, wherein the first catalyst is located on the upstream side in the exhaust gas passage, and the second downstream-side catalyst contains a cerium/zirconium-base compound oxide (A), prepared by melting a starting mixture at its melting point or higher, the molten mixture being then cooled to produce an ingot and crushed.
摘要翻译：本发明提供了一种用于车辆废气净化装置的催化剂体系，即使在废气中的烃浓度变化时，也能够从内燃机排气中除去氮氧化物排放物的能力优异，排气净化装置使用相同的方法和净化废气的方法。车辆废气净化装置的催化剂体系包括两种以上的废气净化催化剂，其包含两种不同的排气净化催化剂（第一催化剂和第二催化剂），其分别负载在无机结构载体上并且设置在废气通道中，其中第一催化剂位于废气通道的上游侧，第二下游侧催化剂含有通过在其熔点以上熔化起始混合物而制得的铈/锆基复合氧化物（A），然后将熔融混合物冷却以产生锭并粉碎。

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