| Patent Number |
Title Of Patent |
Date Issued |
| 6444012 |
Selective removal of nitrogen from natural gas by pressure swing adsorption |
September 3, 2002 |
| A pressure swing adsorption process for the separation of nitrogen from natural gas utilizes two separate pressure swing adsorption stages, the first containing a hydrocarbon-selective adsorbent and the second containing a nitrogen-selective adsorbent. In the process, the product str |
| 6440900 |
Method for extending the life of cut flowers |
August 27, 2002 |
| Method for extending the life of cut flowers such as roses by bathing the stems of the flowers in a storage solution which contains chlorine dioxide. Also disclosed are compositions for use in the method. |
| 6436363 |
Process for generating hydrogen-rich gas |
August 20, 2002 |
| A process for catalytically generating a hydrogen-rich gas from a hydrocarbon feed. A stream comprising the hydrocarbon feed , water and air is preheated to a temperature sufficiently high to initiate catalytic partial oxidation of the hydrocarbon feed. The preheated stream is then i |
| 6432322 |
Massive bodies for producing highly converted solutions of chlorine dioxde |
August 13, 2002 |
| Massive bodies for rapidly and safely preparing highly converted solutions of chlorine dioxide are disclosed. These massive bodies when added to water produce more chlorine dioxide than when the equivalent weights of the ingredients in powder form are added to water. The solutions produc |
| 6428761 |
Process for reduction of gaseous sulfur compounds |
August 6, 2002 |
| A process for the reduction of gaseous sulfur compounds in gaseous streams. The gaseous stream is contacted with a sorber, e.g., zinc oxide, which is cable of sorbing the sulfur compounds under sulfur sorbing conditions. The sorber is present in the form of one or more layers on the surf |
| 6422008 |
System for reduction of harmful exhaust emissions from diesel engines |
July 23, 2002 |
| Methods and apparatus for reducing the TPM level of a diesel engine exhaust stream by providing a suitable oxidation catalyst into the exhaust train. The oxidation catalyst may be incorporated into a thermal insulative coating on the inner surface of the exhaust train, particularly the |
| 6419890 |
SOX tolerant NOX trap catalysts and methods of making and using the same |
July 16, 2002 |
| The present invention relates to sulfur tolerant catalyst composites useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved NOx trap catalysts for use in |
| 6416732 |
Method of forming aluminosilicate zeolites |
July 9, 2002 |
| Aluminosilicate zeolites are formed in a novel reaction medium which contains a silicate source and an aluminum source in an aqueous alkaline solution and which reaction medium further includes an additional electrolyte salt. The addition of the electrolyte salt provides nucleation s |
| 6415602 |
Control system for mobile NOx SCR applications |
July 9, 2002 |
| A diesel powered vehicle is provided with an SCR system which uses an external reducing reagent to convert NOx emissions in a manner which accounts for the effects of NOx transient emissions on the reducing catalyst. Actual NOx emissions produced by the engine are filtered using a va |
| 6413492 |
Method of forming high aluminum aluminosilicate zeolites |
July 2, 2002 |
| The present invention relates to a method of forming an aluminosilicate zeolite having a Si/Al.ltoreq.1.1. The method comprises forming a reaction mixture by mixing a source of silica, and a source of aluminum in an aqueous alkaline solution having a pH of at least 12.0, wherein the Si/A |
| 6395067 |
Geometric separation processes involving modified CTS membranes |
May 28, 2002 |
| Porous titanium silicate molecular sieves are produced in the form of a membrane capable of separating fluid molecular mixtures. |
| 6387159 |
Claus feed gas hydrocarbon removal |
May 14, 2002 |
| A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent which selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an acid gas removal solution to remov |
| 6379436 |
Macroporaus aluminosilicate desiccant, preparation from sodalite and use in enthalpy energy whee |
April 30, 2002 |
| Sodalite is treated with acid to transform the surface to provide a highly macroporous material that demonstrates water swing capacities exceeding those of high performance, low temperature desiccants under high latent load at relatively high ambient temperature and humidities. |
| 6378703 |
Flotation method for removing colored impurities from kaolin clay |
April 30, 2002 |
| An improved method for purifying titania contaminated kaolin clay by froth flotation which features the use an hydroxamate flotation collector at a neutral or mildly alkaline pH wherein a slurry of the impure clay is conditioned for the flotation step in a baffled conditioning apparatus |
| 6375910 |
Multi-zoned catalytic trap and methods of making and using the same |
April 23, 2002 |
| A multi-zoned catalytic trap for conversion of NO.sub.x in an exhaust gas stream which emanates from an engine which is operated with periodic alternations between lean, and stoichiometric or rich, conditions. The catalytic trap comprises a first zone, a second zone and, optionally, one |
| 6375905 |
Corrugated metal substrate and coated product for ozone conversion |
April 23, 2002 |
| A metal substrate is fabricated and coated with a catalyst for ozone conversion of atmosphere passing through the substrate. A plurality of aluminum foil sheets that have been slit, stretched and twisted into a plurality of regularly repeating channels having geometrically shaped ope |
| 6375902 |
Method, apparatus and composition for removing pollutants from the atmosphere |
April 23, 2002 |
| This invention relates to a method, apparatus and composition for cleaning the atmosphere; and more particularly to a stationary substrate comprising at least one atmosphere contacting surface having a pollutant treating catalytic material coated thereon. Preferably, said catalytic mater |
| 6375733 |
Heat stable monoazo magenta pigment compositions |
April 23, 2002 |
| Disclosed are blue shade red to magenta monoazo pigments which are obtained by diazotization of 5-alkoxy-2-aminobenzenesulfonic acids, coupling of the diazonium compound with a hydoxynaphthalenesulfonic acid and subsequent laking of the coupling product with a divalent metal salt. The pi |
| 6363716 |
Plasma fuel processing for NOx control lean burn engines |
April 2, 2002 |
| A highly reactive reducing gas mixture is produced from vehicle fuel and introduced into the exhaust gas of an internal combustion engine operated at lean burn conditions and passed over a reducing catalyst to convert NO.sub.X emissions to benign emissions. Preferably, fuel with oxygen |
| 6346145 |
Paints containing low sheen opacifying pigments obtained by flux calcination of kaolin clay |
February 12, 2002 |
| Flux calcined kaolin clay especially useful as a pigment for low sheen paints is obtained by mixing hydrous kaolin with an aqueous solution of alkaline flux, spray drying, pulverizing, calcining and repulverizing. |
| 6340433 |
Water purification using titanium silicate membranes |
January 22, 2002 |
| Aqueous streams containing organic and/or inorganic contaminants are purified by the removal of the contaminant by contacting the aqueous stream with a membrane formed from a porous, crystalline titanium silicate. |
| 6340066 |
Pollutant treating devices and methods of making the same |
January 22, 2002 |
| A pollutant treating device especially adapted for motor vehicles in which a housing containing a catalyst composition for treating pollutants is positioned within the normal flow pattern of ambient air within the motor vehicle and is preferably removably placed within a support, such as |
| 6325847 |
Precious metal color effect materials and production thereof |
December 4, 2001 |
| A precious metal color effect material is composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a first layer selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium, osmium, iridium and the alloys |
| 6325846 |
Powder coating composition and method |
December 4, 2001 |
| A laminar pigment which has an aluminum- or an aluminum-cerium oxide coating combined with a hydrolyzed silane coupling agent treated surface is used as a pigment for a powder coating composition. By combining the pigment with a powdery film-forming polymer, a film-forming composition |
| 6319484 |
Compositions for abatement of volatile organic compounds and apparatus and methods using the sam |
November 20, 2001 |
| A composition for abatement of airborne pollution by volatile organic compounds ("VOCs") has an upstream composition which contains a protective adsorbent, e.g., Y zeolite, which is effective for adsorbing large VOC molecules, e.g., toluene, and a protective oxidation catalyst intimately |
| 6311484 |
System for reducing NOx transient emission |
November 6, 2001 |
| A catalyst reduction system using diesel fuel as a reductant for vehicles equipped with diesel engines reduces NOx transient emissions produced during acceleration. Impending engine accelerations are sensed to produce metered pulse(s) of fuel oil simultaneously with and preferably in adv |
| 6301887 |
Low pressure EGR system for diesel engines |
October 16, 2001 |
| A low pressure EGR system suitable for use as a passive retrofit system is disclosed for moving vehicles equipped with a diesel engine. The EGR loop inlet is positioned upstream of the exhaust particulate filter and downstream of the turbine to utilize backpressure created by the exhaust |
| 6301881 |
Apparatus and method for diagnosis of catalyst performance |
October 16, 2001 |
| A method and apparatus that converts time-resolved sensor signals into frequency domain signals using Fast Fourier Transforms and power spectral densities. A signal, as a means to assess catalyst performance such as a signal based on sensing oxygen concentration in motor vehicle exhaust |
| 6296759 |
Process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur containmen |
October 2, 2001 |
| The invention concems a process for hydrogenation, hydroisomerization and/or hydrodesulfurization of a sulfur contaminant containing hydrocarbon feedstock, wherein the feedstock is contacted in the presence of hydrogen gas with a catalyst, which catalyst comprises platinum, palladium or |
| 6294108 |
Composition for the controlled release of chlorine dioxide gas |
September 25, 2001 |
| Method, composition and system for generating chlorine dioxide gas in a controlled release manner by combining at least one metal chlorite and a dry solid hydrophilic material that reacts with the metal chlorite in the presence of water vapor, but does not react with the metal chlorite i |
| 6294012 |
High strength monoazo yellow pigment |
September 25, 2001 |
| Disclosed is a yellow monoazo pigment which is obtained by diazotization of anthranilic acid, coupling of the diazonium compound with 1-(3'-sulfophenyl)-3-methyl-5-pyrazolone and subsequent laking of the coupling product to a strontium salt. The pigment is characterized by the formul |
| 6291056 |
Flakes from multilayer iridescent films for use in paints and coatings |
September 18, 2001 |
| Comminuted particles of iridescent laminate film are prepared by supporting the film on a strippable substrate prior to the processing of the film into particulate form. |
| 6290766 |
Lustrous interference pigments with black absorption color |
September 18, 2001 |
| A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iron oxides and calcining the re |
| 6274226 |
Mesoporous silicoaluminate pigments for use in inkjet and carbonless paper coatings |
August 14, 2001 |
| Disclosed is a process of making pigment coated paper useful for both carbonless copy paper and inkjet printing paper. The pigment comprises mesoporous silico-aluminates from calcium bentonite by controlled extraction of octahedral aluminum under mild condition, by acid, preferably p |
| 6274107 |
Zeolite-containing oxidation catalyst and method of use |
August 14, 2001 |
| Oxidation catalyst compositions for treating diesel exhaust include ceria and, optionally, alumina, each having a surface area of at least about 10 m.sup.2 /g, and a zeolite, e.g., Beta zeolite. Optionally, platinum may be included in the catalytic material, preferably in amounts which a |
| 6256984 |
System for reduction of harmful exhaust emissions from diesel engines |
July 10, 2001 |
| Methods and apparatus for reducing the TPM level of a diesel engine exhaust stream by providing a suitable oxidation catalyst into the exhaust train. The oxidation catalyst may be incorporated into a thermal insulative coating on the inner surface of the exhaust train, particularly the |
| 6255249 |
Oxidation catalyst and method of use |
July 3, 2001 |
| Oxidation catalyst compositions include a catalytic material having a BET surface area of at least about 10 m.sup.2 /g and consisting essentially of a combination of bulk ceria and a bulk second metal oxide which may be one or more of titania, zirconia, ceria-zirconia, silica, alumina-si |
| 6254842 |
Method for using a close coupled catalyst |
July 3, 2001 |
| 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 |
| 6254671 |
Very green-shade yellow metallized disazo pigment |
July 3, 2001 |
| In one embodiment, the present invention relates to a green shade yellow pigment composition comprising a compound having the formula: ##STR1##wherein R.sub.1 and R.sub.2 are independently hydrogen, halogen, an alkyl group having 1 to about 4 carbon atoms, an alkoxy group having 1 to abo |
| 6248688 |
Catalyst composition containing oxygen storage components |
June 19, 2001 |
| The present invention relates to a zirconium, rare earth containing composition comprising zirconium, cerium, neodymium and praseodymium components and the use of this composition in a catalyst composition useful for the treatment of gases to reduce contaminants contained therein and |
| 6245323 |
Bonded metal hydroxide-organic composite polymer films on particulate substrates |
June 12, 2001 |
| A lamellar particle is coated with an amorphous metal oxide hydrated gel which is then converted into a hydrophobic metal hydroxide-organic composite polymer film. The resulting product can be combined with a powdery film-forming polymer to produce a film-forming composition which ca |
| 6239064 |
Catalytic compositions and methods for suppression of halogenation of organic compounds with oxi |
May 29, 2001 |
| Methods and chemical compositions for treating a gas stream comprising non-halogenated and halogenated organic compounds while suppressing halogenation of the non-halogenated organic compounds with the oxidation products of the halogenated organic compounds in the gas stream are disc |
| 6238643 |
Method and device for the production of an aqueous solution containing chlorine dioxide |
May 29, 2001 |
| The present invention is generally directed to a method of producing an aqueous solution of chlorine dioxide from the reaction of a metal chlorite and an acid forming component which do not react to produce chlorine dioxide in the substantial absence of water. The reactants are separated |
| 6237575 |
Dynamic infrared sensor for automotive pre-vaporized fueling control |
May 29, 2001 |
| A pre-vaporized fuel system for use in fueling an internal combustion engine is provided with a dynamic infrared sensor. The infrared sensor senses the hydrocarbon content of the vaporized fuel which information is used by the engine control module to control engine fueling to minimize |
| 6235683 |
Method for enhanced supercooling of plants to provide frost protection |
May 22, 2001 |
| In one embodiment, the present invention relates to a method for enhancing supercooling of a plant to temperatures below about -2.degree. C., involving preventing the formation of ice crystals adjacent the plant by forming a substantially continuous hydrophobic membrane of particulate |
| 6235249 |
Rotary oxidizer systems for control of restaurant emissions |
May 22, 2001 |
| A restaurant emissions abatement system is disclosed which employs a rotary heat regenerative thermal or catalytic oxidizer. Thus, heat which normally would be exhausted into the atmosphere, is recovered by being transferred to incoming unoxidized restaurant emissions. The rotary oxidize |
| 6235106 |
Blue shade Fe-Cr black |
May 22, 2001 |
| One aspect of the invention relates to a blue shade black pigment composition, containing at least iron oxide, chrome oxide, wherein the ratio of iron to chromium is from about 1:1 to about 5:1 by weight; and manganese oxide. Another aspect of the invention relates to a method of mak |
| 6235100 |
Metallized azo yellow pigments |
May 22, 2001 |
| In one embodiment, the present invention relates to a method of preparing a medium shade yellow pigment composition comprising making an azo pigment by coupling (i) two or more diazonium components made from two or more aromatic amines including 2-amino-5-chloro-4-ethylbenzene-1-sulfonic |
| 6231632 |
Urea processing agent |
May 15, 2001 |
| In one embodiment, the present invention relates to a particulate urea composition containing particulate urea; kaolin; and a dispersant, wherein the dispersant is at least one of ammonia based dispersants, sulfonate dispersants, carboxylic acid dispersants and polymeric dispersants. In |
| 6221148 |
Manufacture of improved metakaolin by grinding and use in cement-based composites and alkali-act |
April 24, 2001 |
| In one embodiment, the present invention relates to a method of making a highly reactive pozzolan, involving the steps of forming a slurry comprising metakaolin and a liquid; wet milling the slurry; and separating the metakaolin from the liquid to provide the highly reactive pozzolan. In |
