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| Number | Title | Issue Date |
| 7368000 | Treatment of effluent gases A method is described for recovering a noble gas, such as xenon or krypton, from a first gas mixture comprising a plurality of components, one of which is the noble gas and the others are typically helium and/or nitrogen, argon, and relatively light fluorocarbons. T... | 05/06/2008 |
| 7300497 | Gas separating method A gas separation method is provided in which, when separating a first component and a second component from a mixed gas containing a plurality of components by using a pressure swing adsorption method, these components can be efficiently recovered and cost reduction... | 11/27/2007 |
| 7285154 | Xenon recovery system A first aspect of a process of recovering xenon from feed gas includes: providing an adsorption vessel containing adsorbent having a Xe/N2 selectivity ratio 50% and... | 10/23/2007 |
| 7153806 | Encapsulated oxo-bridged organometallic cluster catalyst and a process for the preparation thereof The present invention relates to a novel encapsulated organometallic cluster complex catalyst and to a process for the preparation thereof. The oxo-bridged organometallic cluster complex of the invention has at least one atom of cobalt and manganese encapsulated in ... | 12/26/2006 |
| 7078364 | Ship-in-a-bottle catalysts In accordance with the present invention there is provided a novel catalyst system in which the catalytic structure is tailormade at the nanometer scale using the invention's novel ship-in-a-bottle synthesis techniques. The invention describes modified forms of soli... | 07/18/2006 |
| 7018448 | Gas cabinet including integrated effluent scrubber A gas cabinet assembly for dispensing of gas to a process facility such as a semiconductor manufacturing tool. A purge gas dry scrubber is integrated with the gas flow circuitry and a venturi pump in the gas cabinet. Purge gas is flowed through the flow circuitry in... | 03/28/2006 |
| 6955711 | Method and system for separating gas Component contained in a gas mixture can be separated based on a PSA method and recovered with high purities at the same time, the system is simple, the system cost is low, and the operation is easy and may be used for separating oxygen and nitrogen from air or for ... | 10/18/2005 |
| 6936566 | Modified metalloaluminophosphate molecular sieves The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) rea... | 08/30/2005 |
| 6923844 | Gas separation method and device A gas separation method and apparatus that recovers efficiently principal gas components from a feed gas that includes a plurality of components, and enables supplying the product gases continuously at a stable flow rate and component concentration. A first separati... | 08/02/2005 |
| 6905576 | Method and system for producing silane This invention relates to a continuous process for the preparation of silane by catalytic disproportionation of trichlorosilane in a reactive/distillative reaction zone having a catalyst bed of catalytically active solid. ... | 06/14/2005 |
| 6906233 | Modified metalloaluminophosphate molecular sieves The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) rea... | 06/14/2005 |
| 6863713 | Method to adsorb an adsorbate using modified carbonaceous material An adsorbent composition containing a modified carbonaceous material capable of adsorbing an adsorbate is disclosed, wherein at least one organic group is attached to the carbonaceous material. Furthermore, methods to increase the adsorption capacity of a carbonaceo... | 03/08/2005 |
| 6848269 | Process and apparatus for the recovery of krypton and/or xenon Krypton and/or xenon is separated crudely from a mixture comprising oxygen and at least one rare gas selected from the group consisting of krypton and xenon in a process comprising feeding said mixture or a mixture derived therefrom to a rare gas recovery system and... | 02/01/2005 |
| 6752851 | Gas separating and purifying method and its apparatus The gas separation and purification process can recover efficiently a valuable gas such as krypton and xenon to be used as an atmospheric gas in a semiconductor manufacturing equipment etc. by means of PSA process. In the process for separating a valuable gas in the... | 06/22/2004 |
| 6660064 | Activated carbon as sole absorbent in rapid cycle hydrogen PSA A pressure swing adsorption process for recovering a product gas from a feed gas, includes: supplying a pressure swing adsorption apparatus including an adsorbent composition containing activated carbon as a major ingredient, wherein the adsorbent composi... | 12/09/2003 |
| 6544318 | High purity oxygen production by pressure swing adsorption Pressure swing adsorption process for the recovery of high purity oxygen from a feed gas comprising oxygen, nitrogen, and argon. The process includes a forward flow stage which comprises (a) passing the feed gas into a first adsorption zone containing an ... | 04/08/2003 |
| 6461410 | Method and apparatus for separating, removing, and recovering gas components A raw gas containing a gas component A with low affinity with an adsorbent and a gas component C with high affinity with the adsorbent are sequentially supplied to at least three adsorption columns, while a desorption gas containing a gas component D whic... | 10/08/2002 |
| 6440196 | Method for purifying and concentrating a gas mixture into a minor constituent, method for detecting this constituent, and installation A method for purifying a minority constituent and concentrating it in a majority constituent of a gas mixture that also contains one or more other minority constituent(s) employs (i) a selective permeation step, (ii) next, a purification step, and (iii) f... | 08/27/2002 |
| 6432170 | Argon/oxygen selective X-zeolite An AgX-type zeolite having a silver exchange level of 20-70% and a Ar/O2 Henry's law selectivity ratio at 23° C. of 1.05 or greater has an optimum combination of selectivity for argon over oxygen at lower cost than higher silver exchange level... | 08/13/2002 |
| 6293995 | Chromatograph having a gas storage system A chromatograph includes an inlet for receiving a sample and a pressurized hydrogen gas flow and in response providing a sample/fluid mixture; a separation column located in a temperature-controlled zone for receiving the sample/fluid mixture and for prov... | 09/25/2001 |
| 6261343 | Use of activated carbon adsorbent in argon and/or oxygen controlling hydrogen PSA The present invention provides a pressure swing adsorption process. The process includes providing a pressure swing adsorption apparatus having a discharge end adsorption layer of activated carbon, feeding through the apparatus a feed gas including hydrog... | 07/17/2001 |
| 6217633 | Method and apparatus for recovering rare gas A process and an apparatus for recovering a noble gas, which can recover a noble gas exhausted from a noble gas employing system efficiently and also can supply the noble gas of a predetermined purity to the noble gas employing system and which can reduce... | 04/17/2001 |
| 6143057 | Adsorbents and adsorptive separation process Adsorbent composites composed of microparticulate zeolites at least 90% of whose particles have a characteristic particle dimension not greater than about 0.6 micron and a macropore inert binder. The composites are useful for separating strongly adsorbed ... | 11/07/2000 |
| 6113673 | Gas storage using fullerene based adsorbents This invention is directed to the synthesis of high bulk density high gas absorption capacity adsorbents for gas storage applications. Specifically, this invention is concerned with novel gas absorbents with high gravimetric and volumetric gas adsorption ... | 09/05/2000 |
| 6036753 | Use of glass fiber materials in diagnosing and preventing radon infiltration into buildings A method and apparatus for testing and remediating the effects of radon infiltration in buildings. The method of this invention places fiber glass materials over radon-emitting surfaces in order to entrap radon and radon progeny. The fiber glass materials... | 03/14/2000 |
| 5958098 | Method and composition in which metal hydride particles are embedded in a silica network A silica embedded metal hydride composition and a method for making such a composition. The composition is made via the following process: A quantity of fumed silica is blended with water to make a paste. After adding metal hydride particles, the paste is... | 09/28/1999 |
| 5895769 | In-situ crystallized zeolite containing composition (LAI-ISC) Applicant has discovered a new zeolite containing composition and a process for preparing the same. The composition is unique in that the zeolite crystals making up one layer of the composition pack in a manner such that the composition is essentially con... | 04/20/1999 |
| 5833737 | Enrichment of krypton in oxygen/nitrogen mix gas Krypton present in a trace amount in a gaseous oxygen/nitrogen mixture is effectively enriched by an adsorption/desorption process of the pressure variation mode using a system including at least three fixed bed adsorption columns packed with hydrogenated... | 11/10/1998 |
| 5707424 | Process system with integrated gas storage and delivery unit A process system with an integrated gas storage and delivery unit comprising an adsorption-desorption apparatus, for storage and dispensing of a gas wherein the gas is dispensed by pressure differential desorption of the sorbate gas from the sorbent mater... | 01/13/1998 |
| 5683492 | Process for the recovery of carbon monoxide from a purge gas containing at least carbon monoxide, nitrogen and hydrogen A process for the recovery of carbon monoxide from a purge gas from acetic acid synthetic containing at least carbon monoxide, nitrogen and hydrogen, wherein the purge gas (6) containing at least carbon monoxide, nitrogen and hydrogen is separated into a ... | 11/04/1997 |
| 5676735 | Reclaiming system for gas recovery from decommissioned gas storage and dispensing vessels and recycle of recovered gas A system for recovery of adsorbed gas remaining in a used storage and dispensing vessel containing sorbent material having residual sorbate gas thereon, when the vessel is taken out of service, in which the used storage and dispensing vessel is coupled in... | 10/14/1997 |
| 5669961 | Method for the purification of noble gases, nitrogen and hydrogen A method and apparatus for the purification and collection of hydrogen isotopes in a flowing inert gaseous mixture containing impurities, wherein metal alloy getters having the capability of sorbing non-hydrogen impurities such as oxygen, carbon dioxide, ... | 09/23/1997 |
| 5658372 | System and method for adsorbing contaminants and regenerating the adsorber A system for adsorbing a plurality of contaminants from a workstream composed of a first stage open-ended activated carbon monolith adsorber, a second stage open ended activated carbon monolith adsorber downstream of the first stage. The first stage activ... | 08/19/1997 |
| 5503811 | Method for removing metal vapor from gas streams A process for cleaning an inert gas contaminated with a metallic vapor, such as cadmium, involves withdrawing gas containing the metallic contaminant from a gas atmosphere of high purity argon; passing the gas containing the metallic contaminant to a mass... | 04/02/1996 |
| 5470378 | System for separation of oxygen from argon/oxygen mixture A process for removing argon from a feed gas stream comprising oxygen and argon to yield a high purity oxygen stream and the system for carrying out the process. The process includes the steps of: (a) providing a feed gas of oxygen and argon at a temperat... | 11/28/1995 |
| 5354362 | Method for filtering odorant from a gas stream A method of filtering a natural gas stream, at the end user's home, business or the like, in which at least a single gas appliance is located, is described in which natural gas odorants have been concentrated in the stream at sufficient levels to be a sig... | 10/11/1994 |
| 5246895 | Method of making ceramic composites The invention relates to a method for producing ceramic composites obtained by oxidation of a parent metal to form a polycrystalline ceramic material by providing a filler having a coating of a silicon source on at least a portion of the filler different ... | 09/21/1993 |
| 5234472 | Separation of gas mixtures including hydrogen A process for separation of a gas mixture containing three components, e.g. a mixture comprising hydrogen, carbon monoxide and carbon dioxide produced by steam reforming a hydrocarbon, by pressure swing adsorption is disclosed. In one embodiment of the pr... | 08/10/1993 |
| 5226933 | Pressure swing adsorption system to purify oxygen A pressure swing adsorption (PSA) process for splitting oxygen from a feed gas comprising 95% oxygen and 5% argon to achieve an oxygen purity of at least about 99.7% is provided. A column used in the PSA process includes therein a bed of silver mordenite,... | 07/13/1993 |
| 5224350 | Process for recovering helium from a gas stream A subquality nitrogen-rich natural gas stream containing more than 0.1 mol % helium is countercurrently extracted with a lean physical solvent to produce a rich solvent bottoms stream which is flashed twice to produce a methane-rich gas product and a nitr... | 07/06/1993 |
