| |
 |
|
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 |
| 5569441 |
System for accelerating the heating rate of a fixed bed catalyst by supplying supplemental energy |
Oct. 29, 1996 |
| 5559073 |
Pollution control catalyst with mutual protective distributed-active-combinations each including noble-metal-atoms stably structured and protected therein |
Sep. 24, 1996 |
| 5556604 |
Method and apparatus for purifying exhaust gases from internal combustion engines |
Sep. 17, 1996 |
| 5550096 |
Catalyst for purifying nitrogen oxides from exhaust and waste gases |
Aug. 27, 1996 |
| 5547913 |
Process for producing exhaust-gases-purifying catalyst |
Aug. 20, 1996 |
| 5534475 |
Catalytically active ceramic monoliths for the reduction of leaded gasoline fueled engine pollutants and the production thereof |
Jul. 9, 1996 |
| 5534237 |
Method of cleaning an exhaust gas and exhaust gas cleaner therefor |
Jul. 9, 1996 |
| 5514355 |
Method for purifying an oxygen-rich exhaust gas |
May. 7, 1996 |
| 5501977 |
Biofilter comprising leonardite, clay and lime |
Mar. 26, 1996 |
| 5494881 |
Ceramic honeycomb structural body and catalyst comprising the same |
Feb. 27, 1996 |
| 5487268 |
Catalyst for purifying exhaust gas and method of purifying exhaust gas |
Jan. 30, 1996 |
| 5478531 |
Muffling and denitrating apparatus |
Dec. 26, 1995 |
| 5451385 |
Control of exhaust emissions from methane-fueled internal combustion engines |
Sep. 19, 1995 |
| 5449504 |
Process for removing nitrogen oxides from oxygen rich exhaust gas |
Sep. 12, 1995 |
| 5443803 |
Catalyst for purifying exhaust gas |
Aug. 22, 1995 |
| 5440872 |
Catalytic method |
Aug. 15, 1995 |
| 5436216 |
Self-heat generation type honeycomb filter and its apparatus |
Jul. 25, 1995 |
| 5433933 |
Method of purifying oxygen-excess exhaust gas |
Jul. 18, 1995 |
| 5422333 |
Exhaust gas purifying catalyst |
Jun. 6, 1995 |
| 5417933 |
Catalytic method |
May. 23, 1995 |
| 5417947 |
System and method for removing hydrocarbons from gaseous mixtures |
May. 23, 1995 |
| 5413976 |
Exhaust gas purification catalyst |
May. 9, 1995 |
| 5409671 |
Catalytic converter for treating exhaust gas |
Apr. 25, 1995 |
| 5407651 |
Catalyst for and method of purifying exhaust gas |
Apr. 18, 1995 |
| 5397550 |
Catalytic converter and cleaning system |
Mar. 14, 1995 |
| 5382416 |
Method for purifying exhaust gas |
Jan. 17, 1995 |
| 5380506 |
Catalytic device for treatment of combustion gases and its method of use, and the catalytic material used in the catalytic device |
Jan. 10, 1995 |
| 5376345 |
Catalytic method and apparatus |
Dec. 27, 1994 |
| 5374409 |
Purifying gases with an alkali metal and transition metal containing zeolite |
Dec. 20, 1994 |
| 5351482 |
Method of maintaining catalytic converter activity in gasoline vehicles |
Oct. 4, 1994 |
| 5342591 |
Catalytic method |
Aug. 30, 1994 |
| 5339754 |
Method and apparatus for prevention of puffing by rotary kiln and other incinerators and combustion systems |
Aug. 23, 1994 |
| 5338715 |
Catalyst for exhaust gas purification |
Aug. 16, 1994 |
| 5330732 |
Method for purifying exhaust gases |
Jul. 19, 1994 |
| 5328672 |
Method for purification of lean-burn engine exhaust gas |
Jul. 12, 1994 |
| RE34655 |
Vehicle exhaust gas systems |
Jul. 5, 1994 |
| 5312605 |
Method for simultaneously removing SO.sub.2 and NO.sub.X pollutants from exhaust of a combustion system |
May. 17, 1994 |
| 5312608 |
Exhaust gas purifying catalyst and an exhaust gas purifying method using the catalyst |
May. 17, 1994 |
| 5290530 |
Method of cleaning exhaust gas |
Mar. 1, 1994 |
| 5284638 |
System and method for removing hydrocarbons from gaseous mixtures using multiple adsorbing agents |
Feb. 8, 1994 |
| 5279997 |
Selective reduction of NO.sub.x |
Jan. 18, 1994 |
| 5271913 |
Denitration catalyst for high-temperature exhaust gas |
Dec. 21, 1993 |
| 5270024 |
Process for reducing nitrogen oxides from exhaust gas |
Dec. 14, 1993 |
| 5238890 |
Exhaust gas purifying catalyst and an exhaust gas purifying method using the catalyst |
Aug. 24, 1993 |
| 5223236 |
Method for exhaust gas cleaning |
Jun. 29, 1993 |
| 5221484 |
Catalytic filtration device and method |
Jun. 22, 1993 |
| 5213781 |
Method of cleaning nitrogen oxide containing exhaust gas |
May. 25, 1993 |
| 5208202 |
Exhaust gas cleaner and method of cleaning exhaust gas catalyst for cleaning exhaust gas |
May. 4, 1993 |
| 5196389 |
Catalytic system particularly for the postcombustion of exhaust gases and a method of producing such a system |
Mar. 23, 1993 |
| 5192515 |
Reduction of nitrogen oxide and carbon monoxide in effluent gases |
Mar. 9, 1993 |
|
|
|
