Patents Assigned to Engelhard Corporation
  • Patent number: 6875264
    Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: April 5, 2005
    Assignee: Engelhard Corporation
    Inventors: Curtis J. Zimmermann, Daniel Stevenson Fuller
  • Patent number: 6872686
    Abstract: A catalytic composition and method of making the same in which a catalytic material has an average pore size distribution sufficiently large to substantially prevent capillary condensation.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: March 29, 2005
    Assignee: Engelhard Corporation
    Inventors: Fred M. Allen, Patrick W. Blosser, Ronald M. Heck, Jeffrey B. Hoke, Terence C. Poles, John J. Steger
  • Patent number: 6863984
    Abstract: A composition and method for improving the adhesion properties of catalytic and adsorptive compositions to a substrate through the addition of clay and/or silicone binder is disclosed. Preferably, the composition includes manganese dioxide and attapulgite clay and/or a silicone polymer which is adhered to a metal substrate, such as a motor vehicle radiator.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: March 8, 2005
    Assignee: Engelhard Corporation
    Inventors: Jeffrey B. Hoke, Ronald M. Heck
  • Patent number: 6855245
    Abstract: The invention is directed to a process for the hydrogenation of a sulfur containing feedstock, having a sulfur content of less than 50 ppm, wherein the feedstock is hydrogenated in the presence of a precious metal catalyst and a nickel-catalyst, said process being carried out in such a manner, that the feedstock is contacted with a mixture of precious metal catalyst, metal oxide and nickel catalyst, the feedstock is contacted initially with the precious metal catalyst followed by contact with the metal oxide and nickel catalyst, either in combination or sequentially, or the feedstock is contacted first with a mixture of precious metal catalyst and metal oxide, followed by contact with the nickel catalyst.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: February 15, 2005
    Assignee: Engelhard Corporation
    Inventors: Bernard Hendrik Reesink, Willem Dijkstra, Pieter Hildegardus Berben, Marius Vaarkamp
  • Publication number: 20050031514
    Abstract: Provided is an emission treatment system and method for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system has an oxidation catalyst upstream of a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia. Also provided is a method for disposing an SCR catalyst composition on a wall flow monolith that provides adequate catalyst loading, but does not result in unsuitable back pressures in the exhaust.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 10, 2005
    Applicant: Engelhard Corporation
    Inventors: Joseph Patchett, Joseph Dettling, Elizabeth Przybylski
  • Patent number: 6852298
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: February 8, 2005
    Assignee: Engelhard Corporation
    Inventors: Chandrashekhar P. Kelkar, David Stockwell, Samual Tauster
  • Patent number: 6849187
    Abstract: Disclosed is a heavy metal removal media containing ferric hydroxide having unique levels of microporosity and mesoporosity/macroporosity, and/or a specific average particle size and/or granule size. The ferric hydroxide is made by simultaneously combining in a vessel at least one iron salt and at least one hydroxide compound, and then recovering the ferric hydroxide. The ferric hydroxide made by simultaneous mixing is effective in removing heavy metals, such as arsenic, from aqueous systems.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: February 1, 2005
    Assignee: Engelhard Corporation
    Inventor: Thomas J. Shaniuk
  • Patent number: 6849572
    Abstract: A layered catalyst member useful for catalytically generating a hydrogen-rich gas from a hydrocarbon feed. The layered catalyst member comprises a monolith substrate containing at least one layer of a steam reforming catalyst in contact with at least one layer of a catalytic partial oxidation catalyst. The steam reforming catalyst comprises one or more platinum group metal components and the catalytic partial oxidation catalyst comprises palladium components.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: February 1, 2005
    Assignee: Engelhard Corporation
    Inventors: H. Shinn Hwang, Robert J. Farrauto
  • Patent number: 6826906
    Abstract: A diesel engine aftertreatment exhaust system uses catalyzed soot filters for particulate matter reduction and urea SCR catalysts for NOx reduction on diesel engines in a combined system to lower particulate matter and NOx at the same time. With this integral emission control system, diesel engines are able to meet ultra low emission standards.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: December 7, 2004
    Assignee: Engelhard Corporation
    Inventors: Ramesh M. Kakwani, Kenneth C. Voss, Joseph A. Patchett, Karl R. Grimston
  • Patent number: 6821333
    Abstract: A color effect material is described as composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a highly reflective layer which acts as a reflector to light directed thereon and a spacer pigment layer which is selectively transparent to light directed thereon.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: November 23, 2004
    Assignee: Engelhard Corporation
    Inventors: Curtis J. Zimmermann, James D. Christie, Vivian K. Doxey, Daniel Stevenson Fuller
  • Publication number: 20040226440
    Abstract: A hydrocarbon adsorption unit for recovery of volatile hydrocarbons which emanate from several sources and which would otherwise be released into the atmosphere through the air cleaner of an automobile engine when the engine is shut-off. The unit is positioned in the air intake system such that all air flowing through the engine passes through the unit. The unit comprises a housing having an air inlet and an air outlet. The housing contains a substrate and a volatile hydrocarbon adsorber material coated on the surface of the substrate. The adsorber material may be silica gel, a molecular sieve and/or activated carbon. The material further contains a binder that will cause the material to adhere to the surface of the substrate.
    Type: Application
    Filed: April 22, 2004
    Publication date: November 18, 2004
    Applicant: ENGELHARD CORPORATION
    Inventors: John S. Foong, Jeffrey B. Hoke
  • Patent number: 6818254
    Abstract: A method and apparatus for treating the atmosphere comprising moving a vehicle through the atmosphere, the vehicle having at least one atmosphere contacting surface and a pollutant treating composition located on said surface. A specific embodiment comprises coating a motor vehicle radiator with pollutant treating catalyst.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: November 16, 2004
    Assignee: Engelhard Corporation
    Inventors: Jeffrey B. Hoke, Fred M. Allen, Patrick W. Blosser, Zhicheng Hu, Ronald M. Heck
  • Publication number: 20040219077
    Abstract: An apparatus useful to treat exhaust gas stream, including diesel engine exhaust. The exhaust stream passes form and exhaust outlet to a catalyzed filter in communication with the exhaust outlet. The catalyzed filter comprises a first catalyst which comprises a first platinum group metal; a first cerium component; and preferably a zirconium component. There can be a second catalyst in communication with the first catalyst, the second catalyst comprises a second cerium component.
    Type: Application
    Filed: June 2, 2004
    Publication date: November 4, 2004
    Applicant: ENGELHARD CORPORATION
    Inventors: Kenneth E. Voss, Stanley Roth, Joseph C. Dettling, Gary W. Rice, Yiu Kwan Lui, Mahmoud Yassine
  • Patent number: 6811600
    Abstract: In a process for preparing a white pigment mixture suitable for coating paper wherein a cationically bulked kaolin clay pigment is dispersed in water in the presence of an anionic dispersant and mixed with a calcium carbonate pigment, the improvement which comprises using an epichlorohydrin amine complex to bulk said kaolin, and employing as the dispersant the combination of at least 0.2% based on the dry weight of said cationically bulked kaolin of a condensed naphthalene sulfonate complex having a molecular weight of 2000 to 10,000 and a sodium polyacrylate salt having a molecular weight of 2000 to 5000, said dispersant being free from lignosulfonate.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 2, 2004
    Assignee: Engelhard Corporation
    Inventors: Sharad Mathur, Richard R. Berube
  • Publication number: 20040198595
    Abstract: The present invention relates to a layered catalyst composite useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved catalysts of the type generally referred to as “three-way conversion” catalysts. The layered catalysts trap sulfur oxide contaminants which tend to poison three-way conversion catalysts used to abate other pollutants in the stream. The layered catalyst composites of the present invention have a sulfur oxide absorbing layer before or above a nitrogen oxide absorbing layer. The layered catalyst composite comprises a first layer and a second layer. The first layer comprises a first support and at least one first platinum component. The second layer comprises a second support and a SOX sorbent component having a free energy of formation from about 0 to about −90 Kcal/mole at 350° C.
    Type: Application
    Filed: January 28, 2004
    Publication date: October 7, 2004
    Applicant: Engelhard Corporation
    Inventor: Shau-Lin F. Chen
  • Publication number: 20040198592
    Abstract: A support for a catalyst for controlling vehicular exhaust emissions comprising a high surface area refractory metal oxide, e.g., gamma-alumina, having a monomolecular layer of a second oxide selected from the group consisting of titanium dioxide, cerium dioxide and zirconium dioxide. Typically, the monomolecular layer will have a thickness of less than about 10 angstroms. The support may be converted into a vehicular exhaust emission control catalyst by depositing the support on a substrate such as cordierite depositing a precious metal component such as platinum on at least part of the monomolecular layer. Preferably, the catalyst will also contain at least one NOx storage component deposited on at least part of the monomolecular layer. Catalysts prepared using the catalyst supports of the invention exhibit outstanding thermal stability and resistance to sulfur poisoning.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 7, 2004
    Applicant: ENGELHARD CORPORATION
    Inventors: Zhicheng Hu, Knut Wassermann, Patrick L. Burk, Youchang Xie, Wei Lin
  • Patent number: 6800125
    Abstract: A color effect material is described as composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a highly reflective silver layer which acts as a reflector to light directed thereon and an iron oxide layer.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: October 5, 2004
    Assignee: Engelhard Corporation
    Inventors: Curtis J. Zimmermann, Steven A. Jones
  • Patent number: 6800773
    Abstract: The invention is directed to a process for carrying out a chemical reaction in a reactor, comprising passing a reaction mixture in liquid phase through at least one structured reactor element present in said reactor, the internal surface of said reactor element that comes into contact with the reaction mixture being catalytically active, the improvement comprising passing said reaction mixture through the said at least one reactor element, said reaction mixture comprising at least one liquid and at least one gas in liquid phase.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: October 5, 2004
    Assignee: Engelhard Corporation
    Inventors: Bernard Hendrik Reesink, Marius Vaarkamp
  • Patent number: 6800586
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: October 5, 2004
    Assignee: Engelhard Corporation
    Inventors: Chandrashekhar P. Kelkar, David Stockwell, Samuel Tauster
  • Patent number: 6799137
    Abstract: The temperature of a semiconductor wafer (160) is measured while undergoing processing in a plasma (168) environment. At least two pyrometers (162, 164) receive radiation from, respectively, the semiconductor wafer and the plasma in a plasma process chamber. The first pyrometer receives radiation from either the front or rear surface of the wafer, and the second pyrometer receives radiation from the plasma. Both pyrometers may be sensitive to the same radiation wavelength. A controller (170) receives signals from the first and second pyrometers and calculates a corrected wafer emission, which is employed in the Planck Equation to calculate the wafer temperature. Alternatively, both pyrometers are positioned beneath the wafer with the first pyrometer sensitive to a first wavelength where the wafer is substantially opaque to plasma radiation, and the second pyrometer is sensitive to a wavelength where the wafer is substantially transparent to plasma radiation.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: September 28, 2004
    Assignees: Engelhard Corporation, Exactus, Inc.
    Inventors: Charles W. Schietinger, Ronald A. Palfenier