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Catalyst, solid sorbent, or support therefor: product or process of making

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Class / Patent application numberDescriptionNumber of patent applications / Date published
502100000 CATALYST OR PRECURSOR THEREFOR 1218
502060000 ZEOLITE OR CLAY, INCLUDING GALLIUM ANALOGS 317
502400000 SOLID SORBENT 282
502020000 REGENERATING OR REHABILITATING CATALYST OR SORBENT 161
502005000 IRRADIATION BY, OR APPLICATION OF, ELECTRICAL, MAGNETIC OR WAVE ENERGY 81
502439000 MISCELLANEOUS (E.G., CARRIER OR SUPPORT PER SE OR PROCESS OF MAKING, ETC.) 52
502001000 HAVING FOREIGN OR DIVERSE FUNCTION (E.G., PREVENT CORROSION, ETC.) 39
502004000 IN FORM OF A MEMBRANE 22
502011000 INCLUDING ION EXCHANGING, EXCEPT ZEOLITES OR PRODUCT THEREOF 15
502007000 BIOSPECIFIC MATERIAL, OR PRODUCED BY ENZYME OR MICROORGANISM 7
502008000 FORMING OR TREATING A SPHERE, PROCESS ONLY 7
502006000 CONTROL RESPONSIVE TO SENSED CONDITION 1
20130040802DESULFURIZATION METHOD FOR LNT SYSTEM - A desulfurization method of a nitrogen oxide absorption catalyst when diesel is used may include determining how many times a regeneration of a diesel particulate filter (DPF) is completed, ending a DPF regeneration, if the number of times of the DPF regeneration reaches a predetermined value and entering into a desulfurization mode to desulfurize the DPF, ending the desulfurization mode after the desulfurization mode is performed for a predetermined time, and calculating a particulate matters (PM) amount that is trapped in the DPF after the desulfurization, compensating the trapped PM amount, and determining a time of the DPF regeneration. A desulfurization timing is determined based on the number of times that the DPF is regenerated to be able to simplify the desulfurization logic and also reduce the memory of ECU, when the LNT catalyst is poisoned by a small amount of sulfur included in exhaust gas.02-14-2013

Patent applications in class Catalyst, solid sorbent, or support therefor: product or process of making

Patent applications in all subclasses Catalyst, solid sorbent, or support therefor: product or process of making