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Class Information
Number: 423/213.2
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Mixture is exhaust from internal-combustion engine > Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element
Description: Processes, in which the material used to treat the gaseous mixture is in the solid-state and comprises a transition element, or compound thereof, and which functions to (1) modify a component, or (2) attract and retain a component, or (3) react with and chemically change a component.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6770252 |
Rolling regeneration diesel particulate trap |
Aug. 3, 2004 |
| 6764664 |
Catalyst for the combustion of diesel soot, methods for making the catalyst and methods of using the catalyst |
Jul. 20, 2004 |
| 6759020 |
Spark-ignited internal combustion engine oxide gas absorbing arrangement and method |
Jul. 6, 2004 |
| 6725647 |
Exhaust gas treatment units for internal combustion engines and processes for operating them |
Apr. 27, 2004 |
| 6716404 |
Process for the purification of exhaust gases |
Apr. 6, 2004 |
| 6716783 |
Catalysts for lean burn engine exhaust abatement |
Apr. 6, 2004 |
| 6713030 |
Process and apparatus for reducing the nitrogen oxide content in exhaust gases by the controlled addition of NH3 |
Mar. 30, 2004 |
| 6709644 |
Small crystallite zeolite CHA |
Mar. 23, 2004 |
| 6699448 |
SOx tolerant NOx trap catalysts and methods of making and using the same |
Mar. 2, 2004 |
| 6696031 |
Treatment of exhaust gas |
Feb. 24, 2004 |
| 6685898 |
Hydrophobic catalytic materials and method of forming the same |
Feb. 3, 2004 |
| 6684627 |
Method of purifying exhaust gas from internal combustion engine |
Feb. 3, 2004 |
| 6685887 |
System for ambient air pollution processing by motor vehicles |
Feb. 3, 2004 |
| 6685897 |
Highly-basic large-pore zeolite catalysts for NOx reduction at low temperatures |
Feb. 3, 2004 |
| 6680036 |
Three-way catalyst |
Jan. 20, 2004 |
| 6680037 |
Device and method for removing sooty particulate from exhaust gases from combustion processes |
Jan. 20, 2004 |
| 6667018 |
Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases |
Dec. 23, 2003 |
| 6655128 |
Purging of an NOx trap |
Dec. 2, 2003 |
| 6645448 |
Hydrothermally stable catalyst for improved lean NOx reduction |
Nov. 11, 2003 |
| 6641788 |
Absorbent for a hydrocarbon, and exhaust gas-purifying catalyst |
Nov. 4, 2003 |
| 6641785 |
Catalytic converter and method for cleaning exhaust gas |
Nov. 4, 2003 |
| 6638486 |
Catalyst for purification of exhaust gases, production process therefor, and process for purification of exhaust gases |
Oct. 28, 2003 |
| 6620392 |
Catalyst for purifying exhaust gas and method for purifying exhaust gas with the catalyst |
Sep. 16, 2003 |
| 6616904 |
Method of removing nitrogen oxides using an ilmenite material |
Sep. 9, 2003 |
| 6607704 |
Sulfur tolerant lean NOx trap |
Aug. 19, 2003 |
| 6602820 |
Method for producing a nitrogen oxide storage material and a storage material made with it |
Aug. 5, 2003 |
| 6596247 |
Method for purifying exhaust gas from internal combustion engines |
Jul. 22, 2003 |
| 6592833 |
Method of NOx abatement in high temperature lean NOx catalyst systems |
Jul. 15, 2003 |
| 6585945 |
SOx tolerant NOx trap catalysts and methods of making and using the same |
Jul. 1, 2003 |
| 6555080 |
Using zeolite SSZ-57 for reduction of oxides of nitrogen in a gas stream |
Apr. 29, 2003 |
| 6551564 |
Process for eliminating oxides of nitrogen |
Apr. 22, 2003 |
| 6548032 |
Process for the treatment of gases with high oxygen content, with a view to controlling nitrogen oxide emissions, using a catalytic composition comprising cerium oxide and/or zirconium oxide |
Apr. 15, 2003 |
| 6546717 |
Combatting air pollution |
Apr. 15, 2003 |
| 6543217 |
System for determining the effectiveness of a catalytic coating on a catalytic converter in a motor vehicle |
Apr. 8, 2003 |
| 6537946 |
Exhaust gas purifying catalyst |
Mar. 25, 2003 |
| 6534439 |
Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres |
Mar. 18, 2003 |
| 6514470 |
Catalysts for lean burn engine exhaust abatement |
Feb. 4, 2003 |
| 6488903 |
Method for cleaning diesel engine exhaust gas |
Dec. 3, 2002 |
| 6482377 |
Method for bypassing sulfur dioxide around an aftertreatment device in an exhaust gas aftertreatment system |
Nov. 19, 2002 |
| 6482376 |
Process for the catalytic removal of polycyclic aromatic nitro, nitroso and/or amino compounds |
Nov. 19, 2002 |
| 6475452 |
Composition based on manganese and use for trapping NOx for treating exhaust gases |
Nov. 5, 2002 |
| 6471923 |
Process for adsorbing and desording oxides of nitrogen |
Oct. 29, 2002 |
| 6468484 |
NO2 abatement composition with enhanced sulfur resistance |
Oct. 22, 2002 |
| 6468485 |
Using zeolite SSZ-60 for reduction of oxides of nitrogen in a gas stream |
Oct. 22, 2002 |
| 6461578 |
Using zeolite SSZ-59 for reduction of oxides of nitrogen in a gas stream |
Oct. 8, 2002 |
| 6455463 |
Alkaline earth/transition metal lean NOx catalyst |
Sep. 24, 2002 |
| 6432374 |
Solid chloride absorbent |
Aug. 13, 2002 |
| 6428754 |
Method and Apparatus for treating exhaust gases |
Aug. 6, 2002 |
| 6413483 |
Catalytic converter for a lean burn internal combustion engine |
Jul. 2, 2002 |
| 6399034 |
Process for reducing nitrogen oxides on SCR catalyst |
Jun. 4, 2002 |
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