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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7993444 | Multi-layer effect pigment 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 n... | 08/09/2011 |
| 7993443 | Multilayer effect pigment 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 n... | 08/09/2011 |
| 7816295 | Hydrothermally stable Ag-zeolite traps for small olefin hydrocarbon molecules A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen. ... | 10/19/2010 |
| 7767176 | Zone coated catalyst to simultaneously reduce NOx and unreacted ammonia Provided is an emissions treatment system and method for reducing NOx emissions in the exhaust stream produced from an internal combustion engine. The system has an injector for periodically metering ammonia or an ammonia precursor into an exhaust stream; and a firs... | 08/03/2010 |
| 7749762 | Test methods for simulating FCC regenerator catalysis and catalyst deactivation A method for testing the performance of catalysts used for conversion of FCC regenerator gases comprises subjecting the catalyst simultaneously to a mixture of gases including an oxidizing gas and a reducing gas in more than one cycle in which the ratio of the oxidi... | 07/06/2010 |
| 7727499 | Ammonia oxidation catalyst for power utilities The present invention is directed to a method for removal by oxidation of the excess ammonia (NH3) gas (“ammonia slip”) resulting from flue gases that have been subjected to selective catalytic reduction (SCR) for reduction of nitrogen oxides (NOx) wi... | 06/01/2010 |
| 7722829 | Pressure-balanced, catalyzed soot filter The invention provides a catalyzed soot filter formed on a wall flow substrate having internal walls coated with catalyst compositions. The soot filter maintains a homogeneous flow of the exhaust gases through the internal walls of the substrate along the length of ... | 05/25/2010 |
| 7704920 | Pollutant emission control sorbents and methods of manufacture Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing sorbent substrate particles with a sulfide salt and a... | 04/27/2010 |
| 7704915 | Methods for preparing coated metal substrates A coated metal substrate useful for carrying an exhaust emission treatment catalyst such as a three-way conversion catalyst for use with small engine platforms. The coated metal substrate comprises a metal such as a stainless steel, a carbon steel, a FeCr alloy, HAS... | 04/27/2010 |
| 7704475 | Zeolite catalyst with improved NOx reduction in SCR The present invention is directed to a novel metal-promoted zeolite catalyst, a method of producing the catalyst and a method of using the catalyst for the selective catalytic reduction of NOx with improved hydrothermal durability. The novel metal-promoted zeolite i... | 04/27/2010 |
| 7700513 | Supported catalyst for olefin polymerization Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compou... | 04/20/2010 |
| 7678347 | High phosphorous poisoning resistant catalysts for treating automobile exhaust The present invention discloses novel catalysts for treating automobile exhaust that have increased resistance to poisoning from oil- and/or fuel-derived additives. In the catalysts of this invention, the catalytic materials are not coated onto a front-end poison ca... | 03/16/2010 |
| 7678279 | Metal compound removal The present invention relates to a process for separating at least one metal compound and/or a component thereof from a mixture, said process comprising contacting the said mixture with a heteropoly acid or heteropoly acid anion, thereby producing a precipitate comp... | 03/16/2010 |
| 7677226 | Hydrocarbon adsorption filter for air intake system evaporative emission control The present invention is directed to the use of an improved hydrocarbon adsorbent coating for the treatment of evaporative emissions from a motor vehicle. More specifically, one or more hydrocarbon adsorbents, in accordance with the present invention, can be coated ... | 03/16/2010 |
| 7673448 | Diesel exhaust article and catalyst compositions therefor A self-cleaning diesel exhaust particulate filter system is disclosed wherein burn-off of collected particulate matter is accomplished at normal exhaust gas temperatures, the filter system being provided with a catalyst mixture of a co-formed ceria-zirconia composit... | 03/09/2010 |
| 7659225 | Precious metal catalyst for debenzylation Disclosed is a catalyst composite containing a metal catalyst and a specifically defined carbon support containing a carbonaceous material. For example, the carbon support may have a total pore surface area of about 800 m2/g or more and about 2,000 m... | 02/09/2010 |
| 7635534 | Simplified process for leaching precious metals from fuel cell membrane electrode assemblies The membrane electrode assemblies of fuel cells are recycled to recover the catalyst precious metals from the assemblies. The assemblies are cryogenically embrittled and pulverized to form a powder. The pulverized assemblies are then mixed with a surfactant to form ... | 12/22/2009 |
| 7622096 | Multilayered catalyst compositions A layered three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Engine exhaust treatment system and methods of using the same are also pro... | 11/24/2009 |
| 7601662 | Copper CHA zeolite catalysts Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal st... | 10/13/2009 |
| 7586002 | Catalyst for purification of aromatic acids One aspect of the invention relates to a catalyst composite containing an extruded catalyst support containing an extruded activated carbonaceous material having specifically a defined pore structure. For example, the extruded activated carbonaceous material may hav... | 09/08/2009 |
| 7585804 | ZSM-5 additive A catalyst composition suitable for reacting hydrocarbons such as in fluidized catalytic cracking (FCC) comprises an attrition-resistant particulate having at least 30% of an intermediate pore zeolite, kaolin, a phosphorous compound, and a high density unreactive co... | 09/08/2009 |
| 7582320 | Acid activated montmorillonite based filtration aid Disclosed are bleaching materials for processing oils, particularly edible oils, containing an acid activated clay having a specifically defined particle size distribution. Also disclosed are methods of making the bleaching materials, and systems and methods for pur... | 09/01/2009 |
| 7578869 | Methods of manufacturing bentonite pollution control sorbents Methods of manufacturing bentonite sorbents for removal of pollutants including mercury from gas streams, such as a flue gas stream from coal-fired utility plants are disclosed. The methods include mixing bentonite sorbent particles with a sulfide salt and a metal s... | 08/25/2009 |
| 7578285 | Hydrocarbon adsorption filter for air intake system evaporative emission control The present invention is directed to the use of an improved hydrocarbon adsorbent coating for the treatment of evaporative emissions from a motor vehicle. More specifically, one or more hydrocarbon adsorbents, in accordance with the present invention, can be coated ... | 08/25/2009 |
| 7576031 | Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function The present invention is directed to a diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx). More particularly, the present inve... | 08/18/2009 |
| 7575629 | Pollutant emission control sorbents and methods of manufacture Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include mixing fly ash particles with a sulfide salt and a metal sal... | 08/18/2009 |
| 7572421 | Mercury sorbents and methods of manufacture and use Sorbents for removal of mercury and other pollutants from gas streams, such as a flue gas stream from coal-fired utility plants, and methods for their manufacture and use are disclosed. The methods include injecting fluid cracking catalyst particles mixed with modif... | 08/11/2009 |
| 7569511 | Catalyst composition for alcohol steam reforming An alcohol steam reforming catalyst for generating hydrogen contains palladium, yttrium, and at least one of cerium and a metal oxide. The catalyst displays both an improved alcohol conversion rate and improved carbon dioxide selectivity. Methods of making and using... | 08/04/2009 |
| 7563747 | Fischer-Tropsch catalyst The present invention relates to a catalyst comprising particles of a cobalt and zinc co-precipitate, having a volume average particle size of less than 150 μm. Another aspect of the invention is the use of such a catalyst in a Fischer-Tropsch process. The present ... | 07/21/2009 |
| 7552587 | Deflector plate to enhance fluid stream contact with a catalyst A low-cost catalytic article is provided for treating gaseous fluid streams such as exhaust streams from gasoline-powered engines. The articles contain residence chambers defined by chamber walls and foraminous catalytic elements that contain a catalyst composition ... | 06/30/2009 |
| 7550124 | Layered catalyst composite A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. In one or more embodiments, the catalyst comprises three layers in conjun... | 06/23/2009 |
| 7547813 | ZSM-5 additive A catalyst composition suitable for reacting hydrocarbons such as in fluidized catalytic cracking (FCC) comprises an attrition-resistant particulate having at least 30% of an intermediate pore zeolite, kaolin, a phosphorous compound, and a high density unreactive co... | 06/16/2009 |
| 7547653 | ZSM-5 additive A catalyst composition suitable for reacting hydrocarbons such as in fluidized catalytic cracking (FCC) comprises an attrition-resistant particulate having at least 30% of an intermediate pore zeolite, kaolin, a phosphorous compound, and a high density unreactive co... | 06/16/2009 |
| 7540904 | Hydrocarbon adsorption slurry washcoat formulation for use at low temperature The present invention is directed to an improved hydrocarbon adsorbent slurry washcoat formulation, which can be used for controlling evaporative hydrocarbon emissions from a motor vehicle. More specifically, the present invention is directed to an improved slurry c... | 06/02/2009 |
| 7531029 | Coated screen adsorption unit for controlling evaporative hydrocarbon emissions 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 th... | 05/12/2009 |
| 7528092 | Nickel catalyst for hydrogenation reactions The present invention relates to a catalyst nickel, silica, alumina and magnesium, wherein the nickel to magnesium atomic ratio is 5-75. In particular the present invention relates to a catalyst comprising nickel, silica, alumina and magnesium, wherein the nickel to... | 05/05/2009 |
| 7527774 | Inlet metallic foam support coupled to precious metal catalyst for application on 4 stroke platforms The present invention is directed to an improved dual phase muffler for the abatement of reduction of sound and emission pollutants such as hydrocarbons, carbon monoxide, and nitrogen oxides. More specifically, the muffler comprises a muffler casing, an inner chambe... | 05/05/2009 |
| 7524465 | Multi-zone catalytic converter Provided is an exhaust article (catalyst) coated on a single substrate, such as a monolithic honeycomb having a plurality of channels along the axial length of the catalyst. Different washcoat compositions are deposited along the length the channel walls of the subs... | 04/28/2009 |
| 7521087 | Method for catalyst coating of a substrate A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensi... | 04/21/2009 |
| 7521033 | Exhaust inlet metallic foam trap coupled to a downstream monolithic precious metal catalyst The present invention is directed to an improved apparatus and method of minimizing catalyst poisoning from exhaust gas streams containing inorganic deposits and particulate matter. More specifically, the present invention is directed to an upstream metallic foam tr... | 04/21/2009 |
