| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423213700 | Including successive stage treatments to modify or remove a different component in each stage | 11 |
| 20080219907 | EXHAUST GAS PURIFYING METHOD FOR FUEL CELL VEHICLE AND EXHAUST GAS PURIFYING SYSTEM FOR FUEL CELL VEHICLE - An exhaust gas purifying method for a fuel cell vehicle comprises preparing an exhaust gas purifying system for the fuel cell vehicle, the exhaust gas purifying system including a methane removal catalyst for accelerating the conversion of methane into hydrogen and carbon monoxide. The methane removal catalyst comprises a catalytic ingredient including at least one of rhodium, platinum and palladium. | 09-11-2008 |
| 20090285737 | Copper CHA Zeolite Catalysts - Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1. | 11-19-2009 |
| 20110268635 | SCR on Low Thermal Mass Filter Substrates - Provided are selective catalytic reduction (SCR) filters that effectively provide simultaneous treatment of particulate matter and NO | 11-03-2011 |
| 20120294786 | EXHAUST PURIFICATION DEVICE AND EXHAUST PURIFICATION METHOD FOR DIESEL ENGINE - Provided are an exhaust purification device for a diesel engine, and an exhaust purification method that utilizes this exhaust purification device enabling effective utilization of exhaust gas heat and allowing reduction in the size of the device, by virtue of the design of the layout of each post-processing units. An exhaust purification device | 11-22-2012 |
| 20120315204 | EXHAUST PURIFICATION DEVICE AND EXHAUST PURIFICATION METHOD FOR DIESEL ENGINE - Provided are an exhaust purification device for a diesel engine and an exhaust purification method that utilizes the exhaust purification device enabling effective utilization of exhaust gas heat and allowing reduction in the size of the device, by virtue of the design of the layout of each post-processing units. An exhaust purification device | 12-13-2012 |
| 20130259779 | CARBON MONOXIDE-SELECTIVE OXIDATION CATALYSTS - Particles of mixed oxides of cerium, zirconium, and copper (CeZrCuO | 10-03-2013 |
| 20140134087 | METHOD AND APPARATUS FOR EXHAUST GAS CONTROL OF AN INTERNAL COMBUSTION ENGINE - An exhaust gas control apparatus for an internal combustion engine includes: a NOx purification catalyst arranged in an exhaust passage of the internal combustion engine; a degradation degree estimating unit estimating a degradation degree of the NOx purification catalyst; and an air-fuel ratio control unit adjusting an air-fuel ratio of exhaust gas flowing into the NOx purification catalyst, wherein, until the estimated degradation degree of the NOx purification catalyst reaches a predetermined degradation degree, the air-fuel ratio control unit adjusts the air-fuel ratio of the exhaust gas to a rich air-fuel ratio, and, when the estimated degradation degree of the NOx purification catalyst exceeds the predetermined degradation degree, the air-fuel ratio control unit changes the air-fuel ratio of the exhaust gas from the rich air-fuel ratio to a lean air-fuel ratio so that the NOx purification catalyst is regenerated. | 05-15-2014 |
| 20150118134 | METHOD AND SYSTEM FOR THE PURIFICATION OF EXHAUST GAS FROM AN INTERNAL COMBUSTION ENGINE - The invention provides a method and system for the purification of exhaust gas from an internal combustion engine, comprising a filter and a SCR catalyst. The filter is periodically regenerated increasing the temperature of the exhaust gas up to 850° C. and the water vapour content up to 100% by volume. The SCR catalyst comprises a hydrothermally microporous stable zeolite and/or zeotype having the AEI type framework and being promoted with copper. | 04-30-2015 |
| 20150132206 | Copper CHA Zeolite Catalysts - Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25: 1 to about 1:1. | 05-14-2015 |
| 20160121300 | CATALYST COMPOSITION AND EXHAUST GAS PURIFYING METHOD - An exhaust gas purifying catalyst of the present invention includes: a first metal oxide selected from the group of praseodymium oxide, terbium oxide, and a combination thereof; a second metal oxide that is neodymium oxide; a third metal oxide that is zirconia or a combination of zirconia and ceria; and a fourth metal oxide selected from the group of lanthanum oxide, yttrium oxide, barium oxide, calcium oxide, strontium oxide, silicon oxide and a combination thereof. | 05-05-2016 |
| 20180021727 | METHOD AND APPARATUS FOR OPERATING A GAS TURBINE POWER PLANT AT LOW LOAD CONDITIONS WITH STACK COMPLIANT EMISSIONS LEVELS | 01-25-2018 |
