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| Number | Title | Issue Date |
| 8034311 | Oxidation catalyst and exhaust-gas purification system using the same An oxidation catalyst that efficiently promotes oxidation of NO to NO2 even in a low temperature range, and an exhaust-gas purification system and method that efficiently removes exhaust-gas components even in a low temperature range are provided. This in... | 10/11/2011 |
| 7981834 | Adsorbent for hydrocarbons, catalyst for exhaust gas purification and method for exhaust gas purification An object of the present invention is to improve hydrocarbon adsorbing property when zeolite is used as an adsorbent for hydrocarbons. The present invention provides an adsorbent for hydrocarbons characterized by comprising A Type of β-zeolite having a SiO2 | 07/19/2011 |
| 7923407 | Catalyst for exhaust gas purification, production method therefor, and method for purification of exhaust gas using the catalyst It is an object of the present invention to provide a catalyst for the exhaust gas purification having excellent ignition performance and NOx purification performance. The present invention provides a catalyst for the exhaust gas purification which comprises a catal... | 04/12/2011 |
| 7763560 | Catalyst for purifying diesel engine exhaust gas and method for production thereof A catalyst which purges a diesel engine exhaust gas of HC, CO, and SOF and reduces the emission of particulates as well and a method for the production thereof are provided. The catalyst for purifying a diesel engine exhaust gas has deposited on a refractory three-d... | 07/27/2010 |
| 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 |
| 7704473 | Method and device for controlling exhaust emission from internal combustion engine A purification method excellent in removing particulates or the like from exhaust gas from an internal combustion engine, in particular, a diesel engine or the like. The purification method uses an exhaust gas purification apparatus including an oxidation zone insta... | 04/27/2010 |
| 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 |
