ClassID:

30270

B01D2251/21 - CPC Classification

Classification description:

Reactants; Reductants Organic compounds not provided for in groups or

Recent Application in this class:
#1
20260097361
2026-04-09

GAS ABATEMENT APPARATUS AND GAS TREATMENT METHOD

#2
20250277465
2025-09-04

DIESEL EXHAUST FLUID WITH ADDITIVE

#3
20240149210
2024-05-09

COMBINATION CARBON MONOXIDE AND NITROGEN DIOXIDE SCRUBBER TREATMENT AND PROCESS

#4
20240042382
2024-02-08

USE OF SILICA NANOPARTICLES WITH GLYOXAL FOR H2S SCAVENGING

#5
20230360511
2023-11-09

Methods and systems for automatically generating a remedial action in an industrial facility

#6
20220282166
2022-09-08

Stabilized concentrated formaldehyde solutions and methods of use thereof

#7
20210387142
2021-12-16

Method for reducing nitrogen dioxide in exhaust gas generated during olefin production process

#8
20200164308
2020-05-28

Biodegradable waste remediation method and system

#9
20200157439
2020-05-21

Synergized acetals composition and method for scavenging sulfides and mercaptans

#10
20200156003
2020-05-21

Aldehyde decomposition catalyst, and exhaust gas treatment apparatus and exhaust gas treatment method

#11
20200147547
2020-05-14

Method for the removal of oxygen from an industrial gas feed

#12
20190194551
2019-06-27

SYNERGIZED ACETALS COMPOSITION AND METHOD FOR SCAVENGING SULFIDES AND MERCAPTANS

#13
20190194523
2019-06-27

Synergized hemiacetals composition and method for scavenging sulfides and mercaptans

#14
20190126199
2019-05-02

Process for the purifying of a raw gas stream containing mainly C1-C5 hydrocarbons and carbon dioxide, and impurities of organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds and oxygen

#15
20180371974
2018-12-27

Fluid for purifying heat engines and methods for preparing said fluids by emulsification

#16
20180369751
2018-12-27

Carbonized material, device for removing ozone, and method for removing ozone

#17
20180345258
2018-12-06

Honeycomb structure and catalyst for cleaning exhaust gas using same, and method for producing catalyst for cleaning exhaust gas

#18
20180312766
2018-11-01

System for the treatment of a contaminated hydrocarbon streams

#19
20180312765
2018-11-01

System for the treatment of mercaptan contaminated hydrocarbon streams

#20
20180245005
2018-08-30

Method for removing amine from a contaminated hydrocarbon streams

#21
20180214821
2018-08-02

Process and device for the purification of waste gas

#22
20170352243
2017-12-07

Methods and systems for automatically generating a remedial action in an industrial facility

#23
20170320052
2017-11-09

Compositions and methods for reducing atmospheric ozone levels

#24
20170296967
2017-10-19

Filtration device for air purification appliance

#25
20170173518
2017-06-22

Composite method of trapping carbon dioxide in gas mixture

#26
20170165654
2017-06-15

CATALYST FOR PURIFYING COMBUSTION EXHAUST GAS, AND METHOD FOR PURIFYING COMBUSTION EXHAUST GAS

#27
20170157563
2017-06-08

Catalyst system for lean NOx reduction with hydrocarbons

#28
20170101587
2017-04-13

Processes and compositions for scavenging hydrogen sulfide

#29
20170050141
2017-02-23

Apparatus for removing an acid gas from a gas stream

#30
20160288020
2016-10-06

Process additive formulation and method for foam reduction and/or for increasing drainage

#31
20160237523
2016-08-18

Method and plant for removing arsenic and/or antimony from flue dusts

#32
20160166989
2016-06-16

Method for purifying exhaust gas

#33
20160038931
2016-02-11

Compositions and methods for reducing atmospheric ozone levels

#34
20160008800
2016-01-14

Oxygen-absorbing resin composition

#35
20150152341
2015-06-04

Removal of hydrocarbon contaminants

#36
20150004065
2015-01-01

Filter cartridge for an air purifier

#37
20140318102
2014-10-30

Exhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter

#38
20140260208
2014-09-18

Exhaust gas purifier

#39
20140150410
2014-06-05

Ammonia gas generator for producing ammonia in order to reduce nitrogen oxides in exhaust gases

#40
20140147356
2014-05-29

Ammonia gas generator and method for producing ammonia in order to reduce nitrogen oxides in exhaust gases

#41
20140127100
2014-05-08

Method for the production of ammonia from an ammonia precursor substance in order to reduce nitrogen oxides in exhaust gases

#42
20130193375
2013-08-01

Process for the removal of heat stable salts from acid gas absorbents

#43
20130012699
2013-01-10

Amidium-based ionic liquids for carbon dioxide absorption

#44
20130004393
2013-01-03

Synergistic method for enhanced HS/mercaptan scavenging

#45
20120230899
2012-09-13

Mixed metal oxide catalyst for decomposition of nitrogen oxides

#46
20120219487
2012-08-30

Method for adsorbing and decomposing lean nitrogen oxide using a mixed metal oxide catalyst

#47
20120093948
2012-04-19

Nitric Oxide Treatments

#48
20120082605
2012-04-05

Exhaust treatment system and method of operation

#49
20120055808
2012-03-08

PROCESS FOR THE ELECTROLYTIC DISSOCIATION OF HYDROGEN SULFIDE

#50
20120053385
2012-03-01

METHOD AND DEVICE FOR REDUCING OLEFIN LOSSES DURING THE REMOVAL OF CARBON DIOXIDE FROM AN OLEFIN FLOW FROM DEHYDROGENATION REACTIONS

#51
20120014861
2012-01-19

CO2 recovery unit and method therefor

#52
20120012002
2012-01-19

Monoterpene component-rich essential oil, method for producing same and method for remediating environmental pollutants using the essential oil

#53
20110233461
2011-09-29

Method for minimizing the diameter of a urea solution, urea solution and use of a surfactant in urea solution

#54
20110194988
2011-08-11

HYDRAZINE SPILL PAD APPARATUS AND METHOD OF MANUFACTURING

#55
20110166015
2011-07-07

Process for preparing catalyst powder

#56
20110154808
2011-06-30

EXHAUST GAS PURIFICATION APPARATUS FOR DIESEL ENGINE

#57
20110120094
2011-05-26

Method of regenerating an exhaust gas purification filter, and vaporizer

#58
20110065568
2011-03-17

Catalyst for purifying nitrogen oxide

#59
20110047995
2011-03-03

CATALYST AND METHOD OF MANUFACTURE

#60
20100284875
2010-11-11

Treatment of power utilities exhaust

#61
20100282082
2010-11-11

Waste heat recovery from a carbon capture process

#62
20100234640
2010-09-16

Method for controlling multiple pollutants

#63
20100224063
2010-09-09

Amidium-based ionic liquids for carbon dioxide absorption

#64
20100209329
2010-08-19

CATALYST FOR PRODUCING AMMONIA FROM HYDROCARBON AND NITROGEN OXIDES

#65
20100192545
2010-08-05

EXHAUST AFTERTREATMENT SYSTEM

#66
20100172807
2010-07-08

SYSTEM FOR SCRUBBING ALKYL HALIDES FROM GASES

#67
20100126143
2010-05-27

Dual bed catalyst system for NOx reduction in lean-burn engine exhaust

#68
20100095656
2010-04-22

Exhaust gas cleaning system for construction machine

#69
20100055013
2010-03-04

Process and catalyst system for NOx reduction

#70
20100037596
2010-02-18

EXHAUST PURIFICATION DEVICE OF COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE

#71
20100018188
2010-01-28

Exhaust emission control device

#72
20100000405
2010-01-07

METHOD OF TREATING COMBUSTION GASES

#73
20090194741
2009-08-06

Exhaust system having a carbon oxide catalyst

#74
20090159456
2009-06-25

Separating gas using ion exchange

#75
20090011177
2009-01-08

Exhaust gas cleaning catalyst and process for producing the same

#76
20080317652
2008-12-25

Emission control system internal to a boiler

#77
20080271604
2008-11-06

Ozone resistant O/Nseparation membranes

#78
20080236142
2008-10-02

Method and apparatus for exhaust gas purifying using hydrocarbon-selective catalytic reduction

#79
20080127634
2008-06-05

Hybrid catalyst for NOx reduction using fuel hydrocarbons as reductant

#80
20070231229
2007-10-04

Methods for Reducing Particulate Matter Emissions From Diesel Engine Exhaust Using Ethanol/Diesel Fuel Blends in Combination with Diesel Oxidation Catalysts

#81
20070092417
2007-04-26

Method for removing mercury from waste gas

#82
20060228283
2006-10-12

Catalyst and method for reducing nitrogen oxides in exhaust streams with hydrocarbons or alcohols

#83
20060088462
2006-04-27

Process for scrubbing alkyl halides from gases

#84
20050207957
2005-09-22

Catalyst and method for clarifying exhaust gas

#85
20050145108
2005-07-07

Air cleaning system

#86
20050002843
2005-01-06

Catalytic process for nitrogen oxides reduction by multi-injection and use thereof

#87
16533200
2020-11-10

System and method for removing sulfur trioxide from a flue gas