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| Number | Title | Issue Date |
| 8153091 | Xenon retrieval system and retrieval device To provide a simple highly-pure Xe retrieval method and device with high retrieval efficiency by functionally removing such elements as water, CO2 and FCs from waste gases from semiconductor production processes, such as the plasma etching, that contain low-concentr... | 04/10/2012 |
| 7291565 | Method and system for treating a substrate with a high pressure fluid using fluorosilicic acid A method and system is described for treating a substrate with a high pressure fluid, such as carbon dioxide in a supercritical state. A process chemistry is introduced to the high pressure fluid for treating the substrate surface. The process chemistry comprises fl... | 11/06/2007 |
| 7288201 | Methods for removing moisture from hydrogen halides A composition comprising a magnesium halide coated macroporous carbonaceous substrate is provided for effecting moisture removal from a hydrogen halide fluid. Moisture removal is effected by intimately contacting the hydrogen halide fluid with the magnesium halide c... | 10/30/2007 |
| 7066319 | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets A transport unit includes a plurality of permanent magnets arranged to provide a magnetic holding field for protecting hyperpolarized gas during storage and/or transport. The permanent magnets are configured in a relatively light weight manner to project a substanti... | 06/27/2006 |
| 7044662 | Developing photoresist with supercritical fluid and developer An apparatus for developing a polymeric film without the need for a water rinse step is disclosed. An object having a surface supporting a polymeric film is placed onto a support region within a pressure chamber of the apparatus. A fluid and developer is introduced ... | 05/16/2006 |
| 7033563 | Method for reducing oxygen component and carbon component in fluoride A method for reducing oxygen and carbon components in high-purity fluoride such as calcium fluoride and barium fluoride (a high-purity fluoride that is not limited to calcium fluoride and barium fluoride), or in rare-earth fluorides such as ytterbium fluoride and ce... | 04/25/2006 |
| 6902709 | Hydrogen removing apparatus A hydrogen removing apparatus removes without fail the hydrogen gas generated within a nuclear reactor-housing vessel by a metal-water reaction so as to suppress the pressure elevation within the nuclear reactor-housing vessel. The hydrogen removing apparatus compri... | 06/07/2005 |
| 6843973 | Krypton and xenon recovery system In a process for the recovery of krypton and xenon, an oxygen-enriched stream containing krypton and/or xenon and hydrocarbons is removed from an air separation unit. A substantial portion of the hydrocarbons, especially methane, ethane, and acetylene, is removed fr... | 01/18/2005 |
| 6838066 | Process for recovery, purification, and recycle of argon A method and system for the purification and recycle of impure argon is disclosed. The system and process of the present invention can produce very high purity argon, i.e., about 1 ppb or less of impurities. In one embodiment of the invention, a cryogenic separation... | 01/04/2005 |
| 6685903 | Method of purifying and recycling argon This invention is directed to a method for purifying argon from an impure argon stream. If the oxygen concentration in the impure argon is less than about 10 mole percent of oxygen, the invention is proceeded in the sequential steps of a) removing chlorin... | 02/03/2004 |
| 6565821 | Process for removing the fluorocompounds or fluorosulphur compounds from a stream of xenon and/or krypton by permeation A process and a plant for removing the gaseous fluorocompounds or fluorosulphur compounds, such as CF4, C2 F6, and SF6, present in a stream of xenon and/or krypton, by permeation via one or more membranes, such ... | 05/20/2003 |
| 6517791 | System and process for gas recovery This invention is directed to a three-stage process for recovering and purifying a helium gas, and a system for using the three-stage process. The steps comprises a) introducing a gas from a cold spray forming chamber to a particulate removing apparatus t... | 02/11/2003 |
| 6123909 | Method and apparatus for purification of argon A process for purifying argon to obtain a high-purity argon from argon gas containing at least nitrogen, carbon monoxide, oxygen, and methane, including a first step of adding air or oxygen to the argon gas in an amount sufficient to oxidize the contained... | 09/26/2000 |
| 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 |
| 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 |
| 6089282 | Method for recovery and reuse of gas A gas recovery and reuse/recycle method is disclosed which can readily and economically recover valuable and/or environmentally hazardous gases from a manufacturing or chemical process and then return the gas to the process for reuse, and repeat this many... | 07/18/2000 |
| 6063353 | Process for krypton an xenon extraction Krypton and/or xenon are extracted from a krypton-xenon concentrate by means of distillation, for example, a krypton-xenon concentrate obtained from a low-temperature air separation unit. To remove fluorine- and/or chlorine-containing contaminants, especi... | 05/16/2000 |
| 5792523 | Krypton gas mixture for insulated windows A mixture of noble gases having desirable insulative properties for use as a window fill gas is derived from an air separation process without substantial further separation or concentration of the noble gases in the mixtures. The mixture of noble gases i... | 08/11/1998 |
| 5707842 | Method for regulating enzyme activities by noble gases A method for regulating enzyme activity, which entails contacting one or more enzymes with a gas containing one or more noble gases or mixtures thereof.... | 01/13/1998 |
| 5510098 | CVD method of producing and doping fullerenes Methods of producing fullerenes in large-macroscopic quantities inexpensively is disclosed without using solid carbon material such as graphite. In a preferred embodiment, fullerenes are formed by a hot filament CVD procedure. The fullerenes occur in the ... | 04/23/1996 |
| 5462861 | Method for improving enzyme activities with noble gases A method for regulating enzyme activity, which entails contacting one or more enzymes with a gas containing one or more noble gases or mixtures thereof. The activity of an enzyme on a substrate can be improved by contacting the enzyme with a noble gas und... | 10/31/1995 |
| 5391358 | Gas purification system Processes and systems for purifying high purity helium group gas which may have been contaminated with water, oxygen and/or hydrogen during its transmission to customers' sites.... | 02/21/1995 |
| 5364777 | Method of improving lipase activity using noble gases The activity of a lipase is improved in processes where the lipase is contacted with a noble gas. The gases neon, argon, xenon, and krypton when contacted with the lipase improve the activity of the lipase when the process is performed at a pressure less ... | 11/15/1994 |
| 5305598 | Energy generated from volcanic groundstates A novel class of energy-generating chemical processes or reactions uses cryogenically Prepared and stored materials exhibiting volcanic ground states having lifetimes exceeding several seconds. Energy generation is provided through activation of cryogenic... | 04/26/1994 |
| 5204075 | Process for the purification of the inert gases A process for producing a substantially oxygen-free gaseous product such as argon containing not more than one ppm by volume of oxygen is disclosed. The process comprises introducing hydrogen into a gas stream which contains oxygen and moisture, contactin... | 04/20/1993 |
| 5186007 | Controlled process for xenon concentration The present invention relates to feeding liquid oxygen from the main condenser of the upper rectifying column of an air liquefying/separating unit into a xenon condensing column. The liquid oxygen is evaporated in varying amounts in correspondence to fluc... | 02/16/1993 |
| 5133790 | Cryogenic rectification method for producing refined argon A cryogenic rectification method employing rectification over a defined height within the lower pressure column of a double column system which reduces the nitrogen concentration of an argon, nitrogen, oxygen mixture while maintaining the argon concentrat... | 07/28/1992 |
| 5122173 | Cryogenic production of krypton and xenon from air The present invention relates to a process for the production of krypton and xenon from a cryogenic air separation unit. The present invention simultaneously concentrates krypton and xenon while rejecting more than 90% of the methane present in the feed s... | 06/16/1992 |
| 5108656 | Method for preservation of fresh fish or sea-food A gas mixture for preserving fish and sea-food products, comprising carbon dioxide, oxygen and argon with partial pressures in the following range: ______________________________________ CO2 50%-68% O2 ... | 04/28/1992 |
| 5106399 | Argon purification system An argon purification system comprising an ambient temperature molecular sieve adsorption step, an ambient temperature chemisorption step, and a cryogenic temperature adsorption step, particularly useful with liquefaction of the purified argon.... | 04/21/1992 |
| 5100446 | Crude neon production system A crude neon production system wherein a small neon-containing stream is taken from a cryogenic air separation plant and processed in a neon column and in a non-cryogenic pressure swing adsorption system to produce crude neon and wherein tail gas from the... | 03/31/1992 |
| 5067976 | Cryogenic process for the production of an oxygen-free and methane-free, krypton/xenon product The present invention relates to a process for the production of kryton and xenon by using an oxygen-free vapor stream to strip a liquid stream containing oxygen, krypton, methane, and xenon of methane and oxygen. This is accomplished by properly controll... | 11/26/1991 |
| 5063746 | Cryogenic process for the production of methane-free, krypton/xenon product The present invention relates to a process for the production of kryton and xenon by using a vapor stream containing greater than 2% oxygen to strip a liquid stream containing oxygen, krypton, methane and xenon of methane. This is accomplished by properly... | 11/12/1991 |
| 5039500 | Process for producing xenon The present invention relates to a process for producing high purity xenon safely at a high yield from liquid oxygen in a main condenser of an air separating unit. The present invention involves a process for concentrating and recovering xenon by gasifyin... | 08/13/1991 |
| 4983194 | Production of high purity argon A process for making high purity argon is disclosed in which crude argon containing less than about 0.8 mol % oxygen is recovered from air in a cryogenic distillation system, the crude argon is purified by removing oxygen in a getter system, and other imp... | 01/08/1991 |
| 4935044 | Purification of crude argon For the purification of crude argon, which accumulates partly in liquid form and partly in gaseous form in the head of a crude argon column, most of the crude argon is removed in liquid form (4) and its pressure is increased by use of the hydrostatic pote... | 06/19/1990 |
| 4874592 | Production process of xenon This invention provides a manufacturing process which produces highly purified Xenon economically and safely with high recovery efficiency. In this invention liquid oxygen containing Xenon, which is vented from the main condenser in the upper rectificatio... | 10/17/1989 |
| 4869883 | Inert gas purifier for bulk nitrogen without the use of hydrogen or other reducing gases The present invention relates to a three stage process using copper, copper oxide and molecular sieve adsorbent beds for the sequential removal of oxygen, hydrogen, carbon monoxide, carbon dioxide and water from an inert feed gas. The process is especiall... | 09/26/1989 |
| 4859434 | Production of endothermic gases with methanol The present invention is directed to a process for producing endothermic gases from methanol and inert gas streams containing minor amounts of oxygen, wherein the oxygen is reacted with stoichiometric excess quantities of methanol over a catalyst as ambie... | 08/22/1989 |
| 4859435 | Deoxygenation of inert gas streams with methanol The present invention is directed to a process for removing minor amounts of oxygen from inert gas streams to result in very low levels of oxygen contamination in such inert gas streams, wherein the oxygen is removed by the action of stoichiometric quanti... | 08/22/1989 |
