ClassID:

30409

B01D2255/20784 - CPC Classification

Classification description:

Catalysts; Metals or compounds thereof; Transition metals Chromium

Recent Application in this class:
#1
20250367639
2025-12-04

METHOD FOR MAKING NANOPOROUS CERIA AND USE THEREOF FOR AIR PURIFICATION

#2
20240390878
2024-11-28

GRAIN BOUNDARY AND SURFACE-DOPED RARE EARTH MANGANESE-ZIRCONIUM COMPOSITE COMPOUND AND PREPARATION METHOD AND USE THEREOF

#3
20240269656
2024-08-15

METHOD FOR MANUFACTURING CATALYST FOR CAPTURE AND CONVERSION OF CARBON DIOXIDE

#4
20230330649
2023-10-19

MSECT-4 molecular sieves with off and ERI topologies, preparation method therefor, and applications thereof

#5
20230081569
2023-03-16

Systems, methods and materials for hydrogen sulfide conversion

#6
20220403276
2022-12-22

Pretreatment desulfurization method for ship fuel oil using pretreatment desulfurization agent

#7
20210331117
2021-10-28

Thermal oxidation of volatile organic compounds using a catalyst layer within a waste heat recovery unit

#8
20210322967
2021-10-21

Emission control during catalyst regeneration

#9
20210245095
2021-08-12

Systems, methods and materials for hydrogen sulfide conversion

#10
20210146339
2021-05-20

Catalyst compositions and process for direct production of hydrogen cyanide in an acrylonitrile reactor feed stream

#11
20210033277
2021-02-04

Carbon-dioxide Supplier Safe and Without Hazardous Exhaust Gas

#12
20200353409
2020-11-12

Direct oxidation of hydrogen sulfide in a hydroprocessing recycle gas stream with hydrogen purification

#13
20200149449
2020-05-14

Apparatus for purifying exhaust gas

#14
20200147592
2020-05-14

Base Metal Catalyst and Method of Using Same

#15
20200094187
2020-03-26

TWO-DIMENSIONAL CATALYTIC MATERIALS DERIVED FROM METAL-ORGANIC FRAMEWORKS FOR VOC REMEDIATION

#16
20190283015
2019-09-19

Emission control during catalyst regeneration

#17
20190134617
2019-05-09

Ion-exchanged molecular sieve catalysts exhibiting reduced N2O emissions

#18
20190030477
2019-01-31

Ultraviolet treatment of volatile organic compounds

#19
20190023992
2019-01-24

Particle including atomic-scale channel, method of preparing the same, and catalyst including the same

#20
20190009202
2019-01-10

Multifunctional filter medium, and method and apparatus for manufacturing same

#21
20180318805
2018-11-08

Diesel oxidation catalyst combining platinum group metal with base metal oxide

#22
20180171910
2018-06-21

Control apparatus for internal combustion engine

#23
20180015446
2018-01-18

Oxidation catalyst for a stoichiometric natural gas engine

#24
20170328250
2017-11-16

Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines

#25
20170246590
2017-08-31

PROCESS FOR REMOVING NITROUS OXIDE FROM A GAS STREAM

#26
20170246589
2017-08-31

PROCESS FOR REMOVING NITROUS OXIDE FROM A GAS STREAM

#27
20170239618
2017-08-24

A PROCESS FOR THE OXIDATION OF HYDROGEN SULFIDE TO SULFUR TRIOXIDE WITH SUBSEQUENT SULFUR REMOVAL AND A PLANT FOR CARRYING OUT THE PROCESS

#28
20170157593
2017-06-08

Use of catalysts, method and apparatus for selective oxidation of ammonia in a gas containing hydrogen

#29
20170157564
2017-06-08

Dual-layer catalyst

#30
20170152783
2017-06-01

Exhaust purifier

#31
20170022141
2017-01-26

Process for cleaning carbon dioxide-containing process gases from the preparation of vinyl acetate

#32
20160375404
2016-12-29

EXHAUST GAS TREATMENT SYSTEM

#33
20160354766
2016-12-08

Catalyst for synergistic control of oxynitride and mercury and method for preparing the same

#34
20160303549
2016-10-20

EXHAUST GAS TREATMENT CATALYST

#35
20160264424
2016-09-15

Catalyst for purification of COfrom chlorinated hydrocarbons

#36
20160263524
2016-09-15

Process for removing sulfur compounds from a gas with hydrogenation and direct oxidation steps

#37
20160001228
2016-01-07

Perovskite with an ovlerlayer SCR component as an ammonia oxidation catalyst and a system for exhaust emission control on diesel engines

#38
20160001221
2016-01-07

Composite oxygen transport membrane

#39
20150353368
2015-12-10

Processes using molecular sieve SSZ-100

#40
20150353367
2015-12-10

Processes using molecular sieve SSZ-99

#41
20150352493
2015-12-10

Catalytic articles containing platinum group metals and non-platinum group metals and methods of making and using same

#42
20150321184
2015-11-12

Ammonia slip catalyst having platinum impregnated on high porosity substrates

#43
20150290625
2015-10-15

Mixed metal oxidic nano sheets coated monolithic catalysts useful for the decomposition of toxic NO and a process for the preparation thereof

#44
20150275734
2015-10-01

EXHAUST GAS PURIFICATION DEVICE FOR DIESEL ENGINE

#45
20150240752
2015-08-27

Exhaust system having NO catalyst in EGR circuit

#46
20140371478
2014-12-18

Sequestration and release of carbon dioxide

#47
20140364303
2014-12-11

Systems and methods for using Pd in a TWC

#48
20140287914
2014-09-25

Stainless steel foil and catalyst carrier for exhaust gas purifying device using the foil

#49
20140271419
2014-09-18

Catalytic removal of gas phase contaminants

#50
20140175334
2014-06-26

Polymetallic capture mass for capturing heavy metals

#51
20130244866
2013-09-19

Catalyst for direct decomposition of nitric oxide and method of manufacturing the catalyst

#52
20130202508
2013-08-08

Exhaust treatment system including a nickel-based catalyst

#53
20130034484
2013-02-07

Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-28

#54
20130034483
2013-02-07

Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-25

#55
20130034482
2013-02-07

REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-23

#56
20130017135
2013-01-17

Gas purification using photocatalytic vortex-suspended particles

#57
20120308460
2012-12-06

Nanocomposite particle and process of preparing the same

#58
20120289755
2012-11-15

Carbon catalyst for decomposition of hazardous substance, hazardous-substance-decomposing material, and method for decomposition of hazardous substance

#59
20120269709
2012-10-25

Hybrid reactor with two reaction zones

#60
20120201732
2012-08-09

Ce containing, V-free mobile denox catalyst

#61
20120114540
2012-05-10

METHOD AND APPARATUS FOR REMOVING VOLATILE ORGANIC COMPOUND

#62
20120107206
2012-05-03

System and method for the removal of greenhouse gases

#63
20110223071
2011-09-15

Apparatus for purifying and neutralizing toxic gases

#64
20110120087
2011-05-26

Apparatus with Catalyst for the Reduction of Nitrogen Dioxide (NO2) to Nitric Oxide (NO) by Chemical Means in a Diesel Catalytic Support

#65
20110058999
2011-03-10

Low temperature selective catalytic reduction catalyst and associated systems and methods

#66
20110033370
2011-02-10

System and method for sulfur recovery

#67
20110011068
2011-01-20

Exhaust gas treatment system

#68
20100099552
2010-04-22

Nanocomposite particle and process of preparing the same

#69
20100034717
2010-02-11

Vanadium-free catalyst for selective catalytic reduction and process for it's preparation

#70
20090325787
2009-12-31

Nanocomposite particle and process of preparing the same

#71
20090324472
2009-12-31

Nanocomposite particle and process of preparing the same

#72
20090255236
2009-10-15

Low temperature hydrocarbon SCR

#73
20060228272
2006-10-12

Purifier

#74
20060040824
2006-02-23

Nitrogen oxides-removing material and device

#75
15972572
2019-09-10

Method to power multiple electric heaters with a single power source