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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 |
| 5185311 |
Catalytic composite for purifying exhaust gases and a method for preparing the same |
Feb. 9, 1993 |
| 5182249 |
Non-precious metal three way catalyst |
Jan. 26, 1993 |
| 5176887 |
Treating emissions from engines fueled by compressed natural gas |
Jan. 5, 1993 |
| 5154902 |
Exhaust gas purifying catalyst and exhaust gas purifying process |
Oct. 13, 1992 |
| 5141714 |
Exhaust gas cleaner |
Aug. 25, 1992 |
| 5130100 |
Exhaust gas cleaning device |
Jul. 14, 1992 |
| 5130099 |
Method and an apparatus for the catalytic treatment of exhaust gases of internal combustion engines |
Jul. 14, 1992 |
| 5130109 |
Catalyst composition containing segregated platinum and rhodium components |
Jul. 14, 1992 |
| 5120695 |
Catalyst for purifying exhaust gases from internal combustion engines and gas turbines operated at above the stoichiometric ratio |
Jun. 9, 1992 |
| 5087430 |
Process for purifying exhaust gas |
Feb. 11, 1992 |
| 5063193 |
Base metal automotive exhaust catalysts with improved activity and stability and method of making the catalysts |
Nov. 5, 1991 |
| 5051393 |
Vehicle exhaust gas catalysts |
Sep. 24, 1991 |
| 5041270 |
Method of purifying exhaust gases |
Aug. 20, 1991 |
| 5039644 |
Phosphate-containing ceramic structures for catalyst support and fluid filtering |
Aug. 13, 1991 |
| 5028404 |
Metal oxide catalysts |
Jul. 2, 1991 |
| 5008090 |
Catalytic process for minimizing the H.sub.2 S emissions from automotive exhaust |
Apr. 16, 1991 |
| 4996031 |
Catalyst support material containing lanthanides |
Feb. 26, 1991 |
| 4996180 |
Catalyst of copper oxide and ceria |
Feb. 26, 1991 |
| 4985211 |
Exhaust gas processing apparatus for paint drying oven |
Jan. 15, 1991 |
| 4970188 |
Catalyst for removing nitrogen oxides, carbon monoxide, and/or residual hydrocarbons from exhaust gases |
Nov. 13, 1990 |
| 4908192 |
Vehicle exhaust gas systems |
Mar. 13, 1990 |
| 4859433 |
Process for treating automotive exhaust gases using monolith washcoat having optimum pore structure |
Aug. 22, 1989 |
| 4814153 |
Method of cleaning exhaust gases |
Mar. 21, 1989 |
| 4769356 |
Catalyst for purifying exhaust gas |
Sep. 6, 1988 |
| 4720376 |
Process for the removal of nitrogen oxides and soot from exhaust gases of machines and combustion installations burning heavy fuel oil |
Jan. 19, 1988 |
| 4707467 |
Gas filter |
Nov. 17, 1987 |
| 4673663 |
Catalyst support and process for preparing same |
Jun. 16, 1987 |
| 4670233 |
Method of removing soot which has been trapped in an exhaust gas filter of an internal combustion engine |
Jun. 2, 1987 |
| 4661329 |
Catalyst for oxidizing an offensively smelling substance and a method of removing an offensively smelling substance |
Apr. 28, 1987 |
| 4520124 |
Method for producing a catalytic structure for the reduction of nitrogen oxides |
May. 28, 1985 |
| 4515758 |
Process and catalyst for the reduction of the ignition temperature of diesel soot filtered out of the exhaust gas of diesel engines |
May. 7, 1985 |
| 4500650 |
Three-way catalysts for purification of exhaust gas and method for the preparation of the catalysts |
Feb. 19, 1985 |
| 4477417 |
Catalyst for reducing the ignition temperature of diesel soot |
Oct. 16, 1984 |
| 4473535 |
Process for reducing nitric oxides |
Sep. 25, 1984 |
| 4464349 |
Method and apparatus for the removal of carbon monoxide from the exhaust discharges of small internal combustion engines |
Aug. 7, 1984 |
| 4455281 |
Plate-shaped catalyst unit for NOx reduction of exhaust gas |
Jun. 19, 1984 |
| 4451441 |
Method for exhaust gas treatment |
May. 29, 1984 |
| 4418008 |
Process for increasing the activity of perovskite catalysts and hydrocarbon treating processes using the activated catalyst |
Nov. 29, 1983 |
| 4407785 |
Method of conducting catalytically promoted gas-phase reactions |
Oct. 4, 1983 |
| 4397772 |
Catalyst supports and fluid treatment devices |
Aug. 9, 1983 |
| 4370262 |
Catalytic structure for treating exhaust gases and a process for making the catalytic structure |
Jan. 25, 1983 |
| 4359862 |
Method for treating an exhaust gas stream |
Nov. 23, 1982 |
| 4337028 |
Catalytic monolith, method of its formulation and combustion process using the catalytic monolith |
Jun. 29, 1982 |
| 4331644 |
Combustion catalyst and process for using same |
May. 25, 1982 |
| 4318894 |
Apparatus for the catalytic purification of exhaust gases |
Mar. 9, 1982 |
| 4315895 |
Method and apparatus for purification of exhaust gases |
Feb. 16, 1982 |
| 4304761 |
Method of treating exhaust gases from a methanol fueled internal combustion engine |
Dec. 8, 1981 |
| 4303625 |
Treatment of reducing gas for suppression of corrosiveness |
Dec. 1, 1981 |
| 4303552 |
Diesel exhaust catalyst |
Dec. 1, 1981 |
| 4297246 |
Method of producing dense refractory oxide coatings on metallic substrates and the production of catalysts from the coated substrates |
Oct. 27, 1981 |
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