| Patent Number |
Title Of Patent |
Date Issued |
| 7297654 |
Exhaust gas-purifying catalyst |
November 20, 2007 |
| An exhaust gas-purifying catalyst includes a carrier, and an active component formed of a noble metal, carried by the carrier. The carrier has a core portion comprising a cubic or tetragonal stabilized zirconia-based composite oxide containing at least one stabilizing element, and a |
| 6221805 |
Catalyst support and catalyst and process for producing the same |
April 24, 2001 |
| A catalyst support, a catalyst using the catalyst support and a process for producing the same are disclosed. For instance, the catalyst support includes a composite oxide powder produced by spraying and burning a W/O type emulsion, the W/O type emulsion including an aqueous solution |
| 6217831 |
Catalyst for purifying exhaust gases |
April 17, 2001 |
| A catalyst for purifying exhaust gases which aims to efficiently purify NO.sub.x in exhaust gases in oxygen-rich atmospheres whose oxygen concentrations are more than required for oxidizing CO and HC, and to attain improved NO.sub.x purifying performance after used for a long time. T |
| 6159897 |
Catalyst for purifying exhaust gases |
December 12, 2000 |
| A catalyst for purifying exhaust gases includes a support including at le one composite selected from the group consisting of TiO.sub.2 --Al.sub.2 O.sub.3, ZrO.sub.2 --Al.sub.2 O.sub.3 and SiO.sub.2 --Al.sub.2 O.sub.3 composites, an NO.sub.x adsorbent including at least one member s |
| 6147027 |
Alloy catalyst and process for producing the same |
November 14, 2000 |
| The present invention relates to an alloy catalyst for purifying an exhaust gas, and particularly provides an alloy catalyst excellent in nitrogen oxide purification characteristics in the lean region by improving the catalytic activity by coating first catalytic metal particles with a |
| 6119452 |
Device for purifying exhaust gas of internal combustion engine |
September 19, 2000 |
| A three-way catalyst (8a) is connected to a first cylinder group 1a. The exhaust gas of the first cylinder group (1a), which has passed through the three-way catalyst (8a), and the exhaust gas of a second cylinder group (1b) are introduced to an exhaust gas purifying catalyst (14). The s |
| 6004521 |
Catalyst for purifying exhaust gases |
December 21, 1999 |
| A catalyst for purifying exhaust gases includes a heat resistant support, a porous layer coated on the heat resistant support, a noble metal catalyst ingredient loaded on the porous layer, and an NO.sub.x storage component including at least one member selected from the group consisting |
| 5948376 |
Catalyst for purifying exhaust gases |
September 7, 1999 |
| A catalyst for purifying exhaust gases includes a porous support, an NO.sub.x storage component including at least one member selected from the group consisting of alkaline-earth metals, rare-earth elements and alkali metals, and loaded on the porous support, a noble metal catalyst i |
| 5922293 |
Process for purifying exhaust gases |
July 13, 1999 |
| A catalyst for purifying carbon monoxide, hydrocarbons and nitrogen oxides in exhaust gases at the stoichiometric point or in oxygen-rich atmospheres, is disclosed, and it includes a support in which at least one element selected from the group consisting of alkali metals, alkaline-e |
| 5911960 |
Process for purifying exhaust gases |
June 15, 1999 |
| A catalyst for purifying exhaust gases includes a porous support, at least one catalyst ingredient selected from Pt and Pd, and additional ingredients including (1) at least two rare-earth elements including La, (2) at least one rare-earth element including La and at least one transi |
| 5849254 |
Method for purifying exhaust gases with two layer catalyst in oxygen-rich atmosphere |
December 15, 1998 |
| A catalyst for purifying exhaust gases which aims to efficiently purify NO.sub.x in exhaust gases in oxygen-rich atmospheres whose oxygen concentrations are more than required for oxidizing CO and HC, and to attain improved NO.sub.x purifying performance after used for a long time. T |
| 5804152 |
Method for purifying exhaust gases |
September 8, 1998 |
| An automotive exhaust catalyst includes a support, which is less likely to adsorb SO.sub.x contained in exhaust gases thereon, an NO.sub.x storage compound loaded on the support, and a noble metal element loaded on the support. The support is an alumina support with a Ti--Zr composite ox |
| 5762892 |
Process for purifying exhaust gases |
June 9, 1998 |
| A catalyst for purifying carbon monoxide, hydrocarbons and nitrogen oxides in exhaust gases at the stoichiometric point or in oxygen-rich atmosphere, is disclosed, and it includes a porous support, at least one noble metal catalyst ingredient loaded on the porous support, and selected fr |
| 5075276 |
Catalyst for purification of exhaust gases |
December 24, 1991 |
| A catalyst for purification of exhaust gases, comprising a support substrate, a catalyst carrier layer formed on the support substrate and catalyst ingredients loaded on the catalyst carrier layer, wherein the catalyst carrier layer comprises alumina, cerium oxide, zirconium oxide an |
| 4927799 |
Catalyst for the purification of exhaust gas |
May 22, 1990 |
| A catalyst for the purification of exhaust gases comprising a catalyst carrier layer and catalyst ingredients carried thereon, is capable of enhancing the purification property by suppressing the growth of cerium oxide particles and preventing the formation of LaAlO.sub.3. This catalyst |
| 4849398 |
Catalyst for purifying exhaust gases |
July 18, 1989 |
| A catalyst for purifying exhaust gases contains: a catalyst support, a perovskite double oxide comprising at least one alkaline earth metal oxide, lathanum oxide and cerium oxide, carried on the catalyst support, and noble metal catalyst components carried on the catalyst support.The cat |
| 4843056 |
Exhaust gas purifying catalyst and process for producing the same |
June 27, 1989 |
| An exhaust gas purifying catalyst for oxidizing HC and CO and for reducing NOx is provided, which comprises at least one oxide of rare earth element, rhodium, and at least one of platinum and palladium loaded on alumina grains. The major amount of rhodium is dispersed on the oxide of rar |
| 4808564 |
Catalyst for the purification of exhaust gases |
February 28, 1989 |
| A catalyst for the purification of exhaust gases capable of maintaining excellent durability at elevated temperatures and preventing the formation of LaAlO.sub.3, comprises a support substrate, a catalyst carrier layer formed on the support substrate and catalyst ingredients carried on t |
