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| Number | Title | Issue Date |
| 7740817 | Catalyst for purifying exhaust emission from internal combustion engine, method for preparation thereof and method for purifying exhaust emission from internal combustion engine A catalyst which efficiently removes particulate matter, SOF, sulfate, and SOOT and the like from the exhaust gas from such an internal combustion engine as a diesel engine without inducing a rise in the back pressure of the engine is provided. The catalyst for the ... | 06/22/2010 |
| 7396793 | Exhaust gas purifying catalyst and process for purifying exhaust gas An exhaust gas purifying catalyst contains copper oxide, ZSM-5 and/or zeolite β, and an oxide of magnesium and/or calcium is further added thereto. A process for purifying an exhaust gas using such a catalyst is also included. By using the catalyst, NOx in an exhau... | 07/08/2008 |
| 7393804 | Exhaust gas purifying catalyst and process for purification of exhaust gas An exhaust gas purifying catalyst has a catalytic component including copper, ZSM-5, and β zeolite. This exhaust gas purifying catalyst reduces nitrogen oxides even from low temperature range and exhibits durability even under a thermal load of high temperature. | 07/01/2008 |
| 7265073 | Exhaust gas purifying catalyst and process for purifying exhaust gas An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust ga... | 09/04/2007 |
| 7160839 | Catalyst for purifying nitrogen oxides A catalyst for purifying NOx is provided which efficiently decomposes and purify the NOx in an exhaust gas in an oxygen-excess atmosphere, excels in resistance to heat and in durability in a high temperature range under a high-temperature oxidizing atmosphere and in... | 01/09/2007 |
| 7141526 | Exhaust gas purifying catalyst and process for purifying exhaust gas by use of the catalyst An exhaust gas purifying catalyst characterized by having zeolite subjected to ion exchange with cerium and deposited on cerium oxide as well and containing platinum and/or palladium, and a process for purifying the exhaust gas using the catalyst. The catalyst, by u... | 11/28/2006 |
| 6797668 | Exhaust gas purifying catalyst A catalyst for purifying exhaust gases from internal combustion engines with high efficiencies of CO/NOx even under the conditions large A/F fluctuations. The catalyst includes a complex in which the oxides of cerium are deposited on a solid solution oxide containin... | 09/28/2004 |
| 6656871 | Method for production of catalyst During the deposition of a catalytic component on a carrier, the position of the liquid level of a slurry containing the catalytic component is controlled with high accuracy and the adhesion of the slurry to the lateral face of the carrier is prevented. I... | 12/02/2003 |
| 6602479 | Exhaust gas purifying catalyst An exhaust gas purifying catalyst having a refractory three-dimensional structure coated with a catalytically active component comprising at least one kind of noble metals, a refractory inorganic oxide, and a zirconium oxide containing cerium and lanthanu... | 08/05/2003 |
| 6599857 | Method for production of catalyst During the deposition of a catalytic component on a carrier, the position of the liquid level of a slurry containing the catalytic component is controlled with high accuracy and the adhesion of the slurry to the lateral face of the carrier is prevented. I... | 07/29/2003 |
| 6555081 | Method of the purification of the exhaust gas from a lean-burn engine using a catalyst A catalyst for purifying the exhaust gas from a lean-burn engine, which includes a refractory inorganic oxide carrying platinum thereon, a cerium-containing oxide carrying palladium thereon, and an alkali metal compound and/or an alkaline earth metal comp... | 04/29/2003 |
| 6287527 | Method for controlling exhaust emission Exhaust emission control catalysts capable of efficiently removing nitrogen oxide in exhaust containing a large amount of oxygen emitted from a diesel engine and the like and reducing the generation of particulate matter in the exhaust under high temperat... | 09/11/2001 |
| 6214307 | Exhaust gas purifying catalyst and exhaust gas purifying method An exhaust-gas-purifying catalyst is made by depositing on a support iridium serving as a catalyst active substance, sulfur for improving the catalyst activity of iridium and, if necessary, platinum. The sulfur is preferably contained as a sulfate. The ex... | 04/10/2001 |
| 6143691 | Purifying catalyst for exhaust gas from internal combustion engine A purifying catalyst for the exhaust gas from the internal combustion engine of an automobile, for example, is disclosed which excels in the purifying ability in quick response to the atmosphere of the exhaust gas largely varying with changes in the opera... | 11/07/2000 |
| 5911961 | Catalyst for purification of diesel engine exhaust gas A catalyst for the purification of diesel engine exhaust gas is disclosed which excels in the ability to remove by combustion unburnt hydrocarbons and carbon monoxide as well as minute carbon particles in a wide temperature range from a low temperature zo... | 06/15/1999 |
| 5610117 | Catalyst for purification of diesel engine exhaust gas A catalyst for purification of diesel engine exhaust gas is disclosed which comprises having (A) a catalytic component comprising the two elements of iron and manganese and a refractory inorganic oxide and optionally an alkaline earth element and/or a rar... | 03/11/1997 |
