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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 |
| 4297328 |
Three-way catalytic process for gaseous streams |
Oct. 27, 1981 |
| 4293445 |
Method for production of molded product containing titanium oxide |
Oct. 6, 1981 |
| 4293447 |
Process for repairing plate-shaped denitrating catalysts |
Oct. 6, 1981 |
| 4285838 |
Method of producing plate-shaped catalyst unit for NOx reduction of exhaust gas |
Aug. 25, 1981 |
| 4282115 |
Catalyst for selectively reducing nitrogen oxides from oxygen-containing exhaust gases |
Aug. 4, 1981 |
| 4280926 |
Method for producing a catalyst and a carrier therefor |
Jul. 28, 1981 |
| 4271044 |
Carrier matrix for catalysts and process for its production |
Jun. 2, 1981 |
| 4233183 |
Process for producing plate-shaped denitrating catalyst |
Nov. 11, 1980 |
| 4225462 |
Catalyst for reducing nitrogen oxides and process for producing the same |
Sep. 30, 1980 |
| 4221768 |
Catalyst for purifying exhaust and waste gases |
Sep. 9, 1980 |
| 4207209 |
Sintered cataltyic or absorbent metallic product and method for sintering metallic powders |
Jun. 10, 1980 |
| 4206087 |
Catalyst for reducing pollutants in waste gas streams and process for preparing the catalyst |
Jun. 3, 1980 |
| 4200552 |
Catalyst carrier, catalyst and their manufacturing process |
Apr. 29, 1980 |
| 4188364 |
Two-stage catalysis of engine exhaust |
Feb. 12, 1980 |
| 4186109 |
Catalyst for selectively reducing nitrogen oxides from oxygen-containing exhaust gases |
Jan. 29, 1980 |
| 4185082 |
Catalytic carbon for oxidation of carbon monoxide in the presence of sulfur dioxide |
Jan. 22, 1980 |
| 4170629 |
Method of converting hydrocarbon waste gas streams using a non-uniform crimped metal ribbon packed catalyst bed |
Oct. 9, 1979 |
| 4151123 |
Catalytic perovskites on perovskite supports and process for preparing them |
Apr. 24, 1979 |
| 4149997 |
Method for manufacture of catalyst used for reduction of nitrogen oxides and the catalyst produced by the method |
Apr. 17, 1979 |
| 4143120 |
Method of removing nitric oxide from gases |
Mar. 6, 1979 |
| 4136063 |
Catalyst carrier |
Jan. 23, 1979 |
| 4134733 |
Apparatus for treatment of exhaust gases |
Jan. 16, 1979 |
| 4131643 |
Catalyst for converting nitrogen oxides and method for converting nitrogen oxides in exhaust gases by using said catalyst |
Dec. 26, 1978 |
| 4127510 |
Catalyst for the purification of an exhaust gas |
Nov. 28, 1978 |
| 4126580 |
Stable perovskite catalysts |
Nov. 21, 1978 |
| 4122039 |
Process for preparing catalyst |
Oct. 24, 1978 |
| 4119701 |
NO.sub.x reduction catalyst for internal combustion engine emission control |
Oct. 10, 1978 |
| 4110251 |
Metal oxyhalide catalytic compositions |
Aug. 29, 1978 |
| 4106913 |
Catalytic converter having vibration-resistant catalyst carrier |
Aug. 15, 1978 |
| 4104360 |
Process for reducing oxides nitrogen in the exhaust gas from internal combustion engines |
Aug. 1, 1978 |
| 4082514 |
Catalytic converter for transforming polluting gases into non-polluting gases |
Apr. 4, 1978 |
| 4072471 |
Catalytic converter for removing noxious components from a gaseous stream |
Feb. 7, 1978 |
| 4065543 |
Catalytic oxidation of C.sub.2 -C.sub.4 halogenated hydrocarbons |
Dec. 27, 1977 |
| 4062810 |
Carrier-supported catalyst |
Dec. 13, 1977 |
| 4062808 |
Stabilized rhenium catalyst |
Dec. 13, 1977 |
| 4059677 |
Catalytic oxidation of C.sub.2 -C.sub.4 halogenated hydrocarbons |
Nov. 22, 1977 |
| 4059676 |
Decomposition of halogenated organic compounds |
Nov. 22, 1977 |
| 4051073 |
Pellet-type oxidation catalyst |
Sep. 27, 1977 |
| 4050903 |
Combination muffler and catalytic converter |
Sep. 27, 1977 |
| 4051070 |
Catalyst preparation utilizing metal nitrates and nitrogen oxide scavenger |
Sep. 27, 1977 |
| 4051072 |
Method for making pellet type catalyst |
Sep. 27, 1977 |
| 4049789 |
Process for preparation of mixed oxide powders |
Sep. 20, 1977 |
| 4049583 |
Metal oxide catalytic compositions having perovskite crystal structures and containing metals of the platinum group |
Sep. 20, 1977 |
| 4048112 |
Catalyst for selective reduction of nitrogen oxides |
Sep. 13, 1977 |
| 4045372 |
Control of physical properties of alumina extrudates |
Aug. 30, 1977 |
| 4041128 |
Method for purification of exhaust gases |
Aug. 9, 1977 |
| 4036598 |
Mechanical vibrator for use in material transport apparatus and the like |
Jul. 19, 1977 |
| 4029738 |
Decomposing nitrogen oxides with nickel-iron-chromium catalysts |
Jun. 14, 1977 |
| 4024171 |
Aluminum borate catalyst compositions and use thereof in chemical conversions |
May. 17, 1977 |
| 4021372 |
Catalyst for reducing oxides of nitrogen in the exhaust gas from internal combustion engines and process for making the catalyst |
May. 3, 1977 |
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