1
Shiang Sung, Harold N Rabinowitz, Rudolf M Smaling: Exhaust gas treatment system. Engelhard Corporation, Richard A Negin, July 11, 2000: US06087298 (82 worldwide citation)

The present invention relates to an exhaust gas treatment catalytic article having an upstream catalytic zone and at least one downstream catalytic zone. The upstream catalytic zone has an upstream composition which has a first upstream support, and at least one first upstream palladium component. T ...


2
Michel Deeba, John J Steger, Harold N Rabinowitz, John S Foong: Layered catalyst composite. Engelhard Corporation, Richard A Negin, July 20, 2004: US06764665 (71 worldwide citation)

The present invention relates to a layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The structure of the layered c ...


3
Chung Zong Wan, Samuel J Tauster, Harold N Rabinowitz: Catalyst composition containing platinum and rhodium components. Engelhard Corporation, October 19, 1993: US05254519 (60 worldwide citation)

A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases includes a catalytic material disposed in on a carrier. The catalytic material contains a co-formed (e.g., co-precipitated) rare earth oxide-zirconia support on whi ...


4
Shau Lin F Chen, Harold N Rabinowitz, Chong Kim: Catalytic material having improved conversion performance. Engelhard Corporation, Richard A Negin, August 29, 2000: US06110862 (45 worldwide citation)

A novel catalytic material is prepared by dispersing a catalytically active species, e.g., one or more platinum group metals, on a support phase that contains a high porosity, meso-pores high surface area (HPMPHSA) material. The HPMPHSA material has a porosity, measured in milliliters per gram of ma ...


5
Zhicheng Hu, Patrick L Burk, Shau Lin F Chen, Harold N Rabinowitz, Christopher M Minnella, Aaron N Israel: Exhaust articles for internal combustion engines. Engelhard Corporation, Richard A Negin, Melanie L Brown, Scott S Servilla, October 2, 2007: US07276212 (37 worldwide citation)

Provided is a base metal undercoat containing catalyst and an exhaust article containing the catalyst. The catalyst contains a base metal undercoat with an oxygen storage component, and at least one catalytic layer. Also provided are methods for preparing the catalyst and methods for monitoring the ...


6
Samuel J Tauster, Harold N Rabinowitz, Joseph C Dettling: Three-way conversion catalyst including a ceria-containing zirconia support. Engelhard Corporation, August 18, 1992: US05139992 (36 worldwide citation)

A catalyst composition includes a zirconia support on which is dispersed a limited amount of ceria to provide a zirconia/dispersed ceria support, and a rhodium catalytic component. The ceria content of the zirconia support does not exceed about fifteen percent by weight based on the combined weight ...


7
Sanath V Kumar, Harold N Rabinowitz: Multi-zoned catalyst and trap. Engelhard Corporation, Richard A Negin, March 13, 2007: US07189376 (29 worldwide citation)

Provided are coated, multi-zoned catalyst substrates that trap and combust hydrocarbon and nitrogen oxides pollutants in a single monolith substrate. In some embodiments, the multi-zoned catalysts contain both radial and axial zones. The zones can be formed by deposition of segregated coating compos ...


8
Zhicheng Hu, Ronald M Heck, Harold N Rabinowitz: Close coupled catalyst. Engelhard Corporation, Richard A Negin, April 4, 2000: US06044644 (25 worldwide citation)

A stable, close-coupled catalyst, an article comprising the close-coupled catalyst and a related method of operation. The close-coupled catalyst comprises a catalyst support and a palladium catalytic component. Preferably and optionally, there are stabilizers including alkaline metal oxide, and rare ...


9
Zhicheng Hu, Ronald M Heck, Harold N Rabinowitz: Method for using a close coupled catalyst. Engelhard Corporation, Richard A Negin, July 3, 2001: US06254842 (22 worldwide citation)

A stable, close-coupled catalyst, an article comprising the close-coupled catalyst and a related method of operation. The close-coupled catalyst comprises a catalyst support and a palladium catalytic component. Preferably and optionally, there are stabilizers including alkaline metal oxide, and rare ...


10
Chung Zong Wan, Samuel J Tauster, Harold N Rabinowitz: Removal of CO, hydrocarbons and NO.sub.x with catalyst containing platinum rhodium. Engelhard Corporation, February 13, 1996: US05490977 (20 worldwide citation)

A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases includes a catalytic material disposed in on a carrier. The catalytic material contains a co-formed (e.g., co-precipitated) rare earth oxide-zirconia support on whi ...