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| Number | Title | Issue Date |
| 6221330 | Process for producing single wall nanotubes using unsupported metal catalysts A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one t... | 04/24/2001 |
| 6190634 | Carbide nanomaterials A nanoscale carbide article consisting essentially of covalently bounded elements M1, M2, and C having the molar ratio M1 :M2 :C::1:y:x, wherein the article has an aspect ratio of between 10 and 1000 and has a s... | 02/20/2001 |
| 6187709 | Palladium catalyst pre-oxidation to reduce light-off temperature The invention is a method for preconditioning a palladium containing automotive catalyst by subjecting the catalyst to oxidation by means of an oxidizing gas containing at least 0.85% oxygen at a temperature of at least 450° C. preferably for at least 15... | 02/13/2001 |
| 6183714 | Method of making ropes of single-wall carbon nanotubes This invention provides a method of making single-wall carbon nanotubes by laser vaporizing a mixture of carbon and one or more Group VIII transition metals. Single-wall carbon nanotubes preferentially form in the vapor and the one or more Group VIII tran... | 02/06/2001 |
| 6171567 | Process for the purification of a gas containing hydrogen chloride Solid powdered reactive composition for the purification of a gas containing hydrogen chloride, the said reactive composition comprising more than 98% by weight of sodium bicarbonate and less than 2% by weight of sodium monocarbonate and exhibiting a part... | 01/09/2001 |
| 6165429 | Exhaust gas purifying catalyst and exhaust gas purifying method An exhaust gas purifying catalyst is formed of a first powder formed of porous particles supporting rhodium (Rh), and a second powder formed of porous particles supporting platinum (Pt) and a nitrogen oxides (NOX)-adsorbing material. The second powder and... | 12/26/2000 |
| 6162411 | Production of fullerenic soot in flames A method for the production of fullerenic nanostructures is described in which unsaturated hydrocarbon fuel and oxygen are combusted in a burner chamber at a sub-atmospheric pressure, thereby establishing a flame. The condensibles of the flame are collect... | 12/19/2000 |
| 6153158 | Method and apparatus for treating gaseous effluents from waste treatment systems Effluents from a waste treatment operation are incinerated and oxidized by passing the gases through an inductively coupled plasmas arc torch. The effluents are transformed into plasma within the torch. At extremely high plasma temperatures, the effluents... | 11/28/2000 |
| 6146603 | System for recovering carbon dioxide from a lean feed A system for recovering absorbate such as carbon dioxide using an alkanolamine absorbent fluid, wherein the loaded absorbent is heated in a two step heating procedure prior to the separation of the absorbate from the absorbent, and wherein the loaded abso... | 11/14/2000 |
| 6143691 | Purifying catalyst for exhaust gas from internal combustion engine A purifying catalyst for the exhaust gas from the internal combustion engine of an automobile, for example, is disclosed which excels in the purifying ability in quick response to the atmosphere of the exhaust gas largely varying with changes in the opera... | 11/07/2000 |
| 6136282 | Method for removal of hydrogen sulfide from gaseous streams A method for removal of H2 S from an H2 S-containing natural gas stream in which a high surface area contactor is inserted into the natural gas stream and at least one H2 S scavenging agent is injected into the natural gas... | 10/24/2000 |
| 6136281 | Method to control mercury emissions from exhaust gases The present invention relates to a method to catalyze the oxidation of Hg(0) in a flue gas stream prior to standard emissions control equipment. The oxidized mercury has been found to be more condensable than Hg(0) and consequently more easily removed fro... | 10/24/2000 |
| 6136288 | Firing fines Fine powders of ceramic materials can be obtained by firing a precursor powder in a rotary kiln while carried on coarse carrier particles.... | 10/24/2000 |
| 6132692 | Barrier discharge conversion of SO2 and NOx to acids A process for reducing particulate, Hg, NOx, and SO2 emissions from the combustion of fossil fuel while providing the capability of producing an end product that is commercially useful comprising the steps of oxidizing Hg, NOx and SO2 | 10/17/2000 |
| 6129901 | Controlled synthesis and metal-filling of aligned carbon nanotubes The present invention provides a powerful new method for producing, uniform sized and uniformly aligned nanotubes through catalytic pyrolysis of a hydrocarbon within the dense, uniform and parallel pores of alumina nano-templates. The catalyst, Co, Fe, Ni... | 10/10/2000 |
| 6126911 | Metal oxide product suitable for use in dehydrated gas The present invention relates to the use of metal oxide particles held on carrier particles and moistened with a hygroscopic moistening agent, preferably glycol, with the moistened metal oxide particles used in a system designed to remove sulfur from dehy... | 10/03/2000 |
| 6117809 | Method for decreasing chloride emissions from a catalyst reduction process A method is disclosed for recovering chlorine-containing species from an outlet stream of a zone in which the catalytic metal of a chloride-containing catalyst is reduced. The outlet stream is passed to a sorption zone which contains catalyst and which is... | 09/12/2000 |
| 6117404 | Apparatus and process for recovering basic amine compounds in a process for removing carbon dioxide The present invention provides a process for recovering a basic amine compound which comprises the steps of (a) supplying a CO2 -containing gas to a carbon dioxide absorption unit in which an absorbing solution, which contains a basic amine com... | 09/12/2000 |
| 6113869 | Process for argon purification An argon gas stream containing hydrogen, carbon monoxide, water vapor, oxygen carbon dioxide, nitrogen and methane is purified by drying the gas stream with a desiccant, oxidizing the hydrogen and carbon dioxide to water vapor and carbon dioxide by contac... | 09/05/2000 |
| 6106790 | Abatement of NF3 using small particle fluidized bed A process for destroying NF3 in a gas containing NF3 by contacting the gas with a fluidized bed of metal particles capable of reacting with NF3 wherein the metal particles have a particle size essentially no greater than a... | 08/22/2000 |
| 6107353 | Cyanide and ammonia removal from synthesis gas Cyanide and ammonia are removed from a gas, such as a synthesis gas, by catalytically hydrolyzing cyanide in the gas to ammonia, water scrubbing the hydrolyzed gas to dissolve ammonia and at least a portion of remaining cyanide, and optionally, contacting... | 08/22/2000 |
| 6096278 | Process and device for treating gas flows Process for purifying a gas flow with respect to at least one of the impurities capable of being oxidized and/or reduced which it contains, in which the gas flow is subjected to at least the following steps: (a) compressing the gas flow to a pressure in excess... | 08/01/2000 |
| 6093377 | Removal of nitrogen oxides from exhaust gas using catalyst Exhaust gas from internal combustion engines is treated with catalyst comprising an inorganic oxide supporter which supports at least one of noble metals selected from Rh, Pt, and Pd, alkali rare earth metals, rare earth metals, and magnesium in order to ... | 07/25/2000 |
| 6090363 | Method of opening and filling carbon nanotubes Method of making carbon nanotubes open on at least one end wherein capped nanotubes are treated with an oxidizing acid such as nitric acid. The treatment is effective to open at least 50% of the nanotubes on at least one end.... | 07/18/2000 |
| 6086835 | Oxidation catalyst comprising gold and method of oxidation A catalyst for use in catalysing the oxidation of carbon monoxide and hydrocarbons which comprises an oxide support having captured thereon a noble metal in catalytically effective form. The catalyst is characterised by the presence of an oxide of titaniu... | 07/11/2000 |
| 6083469 | Pyrolysis process for making fullerenes Solid fullerite, comprising a mixture of C60 and C70 fullerenes and higher molecular weight carbon nanotropes, is produced by high temperature, short residence time, pyrolysis of a mixture of hydrocarbons, containing at least two "bu... | 07/04/2000 |
| 6083868 | Method of producing heat-resistant catalyst support A high heat-resistant catalyst support comprises an amorphous composite oxide which is constituted by: (i) an NOx storage component comprising an oxide of at least one element selected from the group consisting of alkali metals, alkaline-earth metals and ... | 07/04/2000 |
| 6080281 | Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction Disclosed is a method for separating a vaporous or gaseous contaminant from an air stream contaminated therewith. This method includes the steps of: (a) passing said contaminated air into a contact zone in which is disposed an aerogel material capable of ... | 06/27/2000 |
| 6077490 | Method and apparatus for filtering hot syngas A method and apparatus for filtering oxidizable particles from hot synthesis gas or syngas uses a pair of candle filters each having an inlet side for receiving the hot unfiltered syngas to be filtered, and an outlet side for discharging hot filtered syng... | 06/20/2000 |
| 6077491 | Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal This patent describes technology for generating ammonia from urea. The method is based on the hydrolysis of an aqueous solution of urea and/or biuret by heating under pressure to form a mixture of ammonia, carbon dioxide and water. The gas mixtures produc... | 06/20/2000 |
| 6077401 | Production of fullerenes using concentrated solar flux A method of producing soot containing high amounts of fullerenes comprising: providing a primary concentrator capable of impingement of a concentrated beam of sunlight onto a carbon source to cause vaporization of carbon and subsequent formation of fuller... | 06/20/2000 |
| 6068823 | Process for the benign direct fixation and conversion of nitrogen oxides A direct fixation of NO2 and N2 O4 at room temperature and atmospheric pressure is described using bis(diorganoamino)magnesium compounds formed from reactions between donor-solvent free diorganomagnesium compounds and prim... | 05/30/2000 |
| 6063349 | Removal of hydrogen cyanide from synthesis gas The HCN concentration of HCN containing synthesis gas streams is reduced by treatment with a Group IVA metal oxide and optionally containing a Group IIB, Group VA, or Group VIA metal or metals, at reaction conditions preferably suppressing Fischer-Tropsch... | 05/16/2000 |
| 6063348 | Flue gas scrubbing and waste heat recovery system A system and method for the reduction of NOx in a flue gas are disclosed. A P4 in water liquid/liquid emulsion is injected into a flue gas having a temperature of about 180° C. to about 280° C. to induce phosphorus-accelerated oxid... | 05/16/2000 |
| 6060033 | Process for removing HCl from hydrocarbon streams The invention relates to a process for removing hydrogen halides from hydrocarbon-containing streams. More particularly, the invention relates to a process and an HCl sorbent for the removal of HCl and other hydrogen halides from hydrocarbon streams to pr... | 05/09/2000 |
| 6051197 | Method for treating a waste gas and an apparatus thereof Disclosed is a method for treating a waste gas and an apparatus thereof capable of reducing the space for establishing the apparatus for treating the waste gas and collecting minute particles formed by oxidizing and cooling the toxic waste gas flown into ... | 04/18/2000 |
| 6046085 | Elimination of poly stringers with straight poly profile A method of preventing poly stringers in the formation of a memory device includes the steps of forming at least one field oxide region in a substrate and forming a tunnel oxide over the substrate. A first polysilicon layer is then formed over the tunnel ... | 04/04/2000 |
| 6045764 | Exhaust gas purifying method and catalyst used therefor An exhaust gas purifying catalyst is provided for purifying NOx contained in an exhaust gas from an internal combustion engine of a vehicle operated at a high air fuel ratio due to excessive oxygen, using unburnt HC or CO in the exhaust gas as a reducing ... | 04/04/2000 |
| 6044644 | Close coupled catalyst 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 stabili... | 04/04/2000 |
| 6042795 | Methods and apparatus for treating waste gas streams from wood burning processes Methods and apparatus for the catalytic oxidation treatment of waste gas streams that contain entrained solids and gaseous air pollutants such as volatile organic compounds and carbon monoxide, and particularly methods and apparatus suitable for treating ... | 03/28/2000 |
