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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 |
| 4021372 |
Catalyst for reducing oxides of nitrogen in the exhaust gas from internal combustion engines and process for making the catalyst |
May. 3, 1977 |
| 4018706 |
Catalysts for purifying exhaust and waste gases |
Apr. 19, 1977 |
| 4009242 |
Metal oxyhalide catalyzed reactions |
Feb. 22, 1977 |
| 4006102 |
Stabilized rhenium catalyst |
Feb. 1, 1977 |
| 4006105 |
NO.sub.x reduction catalyst for internal combustion engine emission control |
Feb. 1, 1977 |
| 4003851 |
Stable alumina catalyst support, process therefor, and promoted support |
Jan. 18, 1977 |
| 4001371 |
Catalytic process |
Jan. 4, 1977 |
| 3997651 |
Catalyst material, method of preparation thereof, and method and apparatus using same |
Dec. 14, 1976 |
| 3985683 |
Catalyst for reducing the toxic contaminants of combustion engine exhaust gas |
Oct. 12, 1976 |
| 3983021 |
Nitrogen oxide decomposition process |
Sep. 28, 1976 |
| 3983072 |
Exhaust catalyst |
Sep. 28, 1976 |
| 3966645 |
Catalyst |
Jun. 29, 1976 |
| 3963444 |
Secondary air supply means of exhaust gas cleaning devices |
Jun. 15, 1976 |
| 3961016 |
Method of removing carbon monoxide from gases |
Jun. 1, 1976 |
| 3957692 |
Method of preparing a catalyst |
May. 18, 1976 |
| 3951867 |
Coprecipitated CeO.sub.2 --SnO.sub.2 catalyst supports |
Apr. 20, 1976 |
| 3947380 |
Oxidation catalyst |
Mar. 30, 1976 |
| 3946101 |
Filtering material |
Mar. 23, 1976 |
| 3939103 |
Catalytic product for the oxidative destruction of gaseous organic compounds and method for their preparation |
Feb. 17, 1976 |
| 3939097 |
Exhaust gas cleaning catalysts and method of producing same |
Feb. 17, 1976 |
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