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| Number | Title | Issue Date |
| 8152897 | Gas/liquid separator for hydrogen generating apparatus A gas liquid separator system for a hydrogen generating apparatus includes a collection area for collecting liquid from the generated gases. To empty the collection area occasionally so that liquid does not build up and become entrained again in the dried gas, a ven... | 04/10/2012 |
| 8142544 | Adsorbent bed pressure balancing for a gas concentrator A system and a method are described for monitoring pressure imbalances in the adsorbent beds of a portable gas concentrator. Using the programmability features found in modern portable concentrators, various mitigative procedures to adjust for pressure imbalances an... | 03/27/2012 |
| 8070853 | Apparatus and method of providing concentrated product gas In one aspect, a product gas concentrator is provided. In one embodiment, the apparatus may include: a first process separating absorbable components from a source gaseous mixture, a second process providing concentrated product gas in a continuous output mode, a th... | 12/06/2011 |
| 8012240 | Apparatus and method of providing concentrated product gas In one aspect, a product gas concentrator is provided. In one embodiment, the apparatus may include: a first process separating absorbable components from a source gaseous mixture, a second process providing concentrated product gas in a continuous output mode, a th... | 09/06/2011 |
| 7722700 | Apparatus and method of providing concentrated product gas Component gas is separated from a gas mixture. Component gas flow rate, or demand, is determined. One or more gas separator operating parameters is changed based on the component gas flow rate. For example, gas flow rate can be approximated by measuring a rate of pr... | 05/25/2010 |
| 7517386 | Filter module with flow control A filter module and method for facilitating rapid flow setting and/or cost-effective balancing of airflow through a plurality of filters is provided. In one embodiment, the filter module includes at least one port configured to provide a metric indicative of flow th... | 04/14/2009 |
| 7455717 | Apparatus and method of providing concentrated product gas In one aspect, a product gas concentrator is provided. In one embodiment, the apparatus may include: a first process separating adsorbable components from a source gaseous mixture, a second process providing concentrated product gas in a continuous output mode, a th... | 11/25/2008 |
| 7445659 | Ejector to reduce permeate backpressure of air separation module An air separation system includes an ejector for controlling a pressure differential across an air separation module and a valve for controlling air flow through the ejector such that airflow through the ejector is discontinued when not required to maintain the desi... | 11/04/2008 |
| H2221 | Air supply system particularly suited to remove contaminants created by chemical, biological or radiological conditions Disclosed is an air supply system that provides filtered ventilation to a protected zone which is maintained at a positive pressure so as to prevent contaminants from infiltrating therein. The system further discloses a three-stage air filter apparatus that provides... | 08/05/2008 |
| 7387659 | Pneumatically operated automatic shutoff circuit for controlling the generation of gas An automatic shut off circuit for controlling the flow of a gas through a gas separation system is disclosed. The gas separation system includes a gas separation module for separating nitrogen from air, and a non-electric automatic shut off circuit for controlling t... | 06/17/2008 |
| 7374600 | System and method for excluding false back pressure faults after installation of a particulate trap filter A method and system for preventing or minimizing false back pressure faults caused by a new particulate filter in an engine exhaust system. When a new particulate filter is placed in an engine exhaust system, the normal back pressure threshold for the fault detectio... | 05/20/2008 |
| 7368005 | Portable oxygen concentrator A portable oxygen concentrator includes a pair of sieve beds having first and second ends, a compressor for delivering air to the first ends of the sieve beds, a reservoir communicating with the second ends of the sieve beds, and an air manifold attached to the firs... | 05/06/2008 |
| 7357831 | Method and apparatus for controlling humidity and mold An apparatus for reducing a relative humidity of air inside an enclosed space includes a portable outside air heat exchanger unit having a fan operative to create an air stream by drawing outside air from an intake and discharging the air stream through an outlet in... | 04/15/2008 |
| 7354464 | Apparatus and method for producing hydrogen An apparatus and method for producing a hydrogen-enriched reformate. The apparatus includes a fuel processor for converting a fuel to a reformate having fluctuations in pressure and or flow rate, means for reducing the fluctuations, a compression unit for compressin... | 04/08/2008 |
| 7329304 | Portable oxygen concentrator A portable oxygen concentrator includes a pair of sieve beds having first and second ends, a compressor for delivering air to the first ends of the sieve beds, a reservoir communicating with the second ends of the sieve beds, and an air manifold attached to the firs... | 02/12/2008 |
| 7326269 | NBC filtration unit providing unfiltered and filtered air paths A filtration unit for use with an environmental control unit (ECU), usually a portable ECU, which includes at least two air flow paths wherein at least one of the air flow paths allows for use of air which has not passed through a nuclear, biological, and chemical (... | 02/05/2008 |
| 7314509 | Gas liquid phase separator with improved pressure control A gas/liquid phase separator includes a fluid inlet, a vapor outlet, a liquid outlet, and first and second valves disposed in fluid communication with the liquid outlet. Both valves are controllable in response to a fluid level in the gas/liquid phase separator. Bot... | 01/01/2008 |
| 7300494 | On-board inert gas generation system with compressor surge protection A valve assembly includes a nitrogen enriched airflow control valve, a first stage surge control valve and a second stage surge control valve respectively arranged in a passage downstream of an air separation module, and in first and second surge control passages. T... | 11/27/2007 |
| 7258132 | Electronically controlled back pressure regulator An electronically controlled back pressure regulator comprises an analysis device having a vent coupled to the analysis device through a vent path, a pressure sensor coupled to the vent path, a proportional valve coupled to the vent path, the proportional valve conf... | 08/21/2007 |
| 7239967 | Method, computer program product and use of a computer program for stabilizing a multiphase flow A method for stabilizing a multiphase flow in a flow line, where instability of the multiphase flow is caused by at least one slug. At least one pressure variable is continuously measured at a flow line inlet upstream of the point where the main part of the slug is ... | 07/03/2007 |
| 7222542 | Method, system, controller and computer program product for controlling the flow of a multiphase fluid A method, system, controller and computer program product, for controlling the flow of a multiphase fluid comprising gas and liquid in a conduit, which conduit is provided at a downstream side with a flow restriction and a valve having a variable aperture, which met... | 05/29/2007 |
| 7204249 | Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage An oxygen concentrator is utilized in combination with a compressor, preferably a radial compressor, to provide a highly enriched and compressed oxygen gas in a mobile container such as a gas cylinder. The combination and method of production provides for the facile... | 04/17/2007 |
| 7194890 | Gas chromatograph and expired air component analyzer A gas chromatograph having the capability of performing a reliable measurement under a condition that the baseline of a detector output is stabilized, and a breath component analyzer using the same are provided. This gas chromatograph comprises a gas separation colu... | 03/27/2007 |
| 7175692 | Ejector to reduce permeate backpressure of air separation module An air separation system includes an ejector for controlling a pressure differential across an air separation module and a valve for controlling air flow through the ejector such that airflow through the ejector is discontinued when not required to maintain the desi... | 02/13/2007 |
| 7153341 | Processes for controlling regenerative sweep air for membrane systems A process for controlling the volume of dry air, dried to a predetermined degree of dryness, from a sweep manifold of an air dryer system, flowing over a plurality of gas/liquid fluid separating membranes, comprising: diverting a predetermined volume of dried air to... | 12/26/2006 |
| 7097689 | Process and system for purifying gases A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combini... | 08/29/2006 |
| 7081153 | Gas generating system and method for inerting aircraft fuel tanks The present invention provides a system and method for generation of nitrogen enriched air for inerting aircraft fuel tanks. One embodiment of the present invention includes a duct assembly; a primary heat exchanger; a gas generating system heat exchanger; a first t... | 07/25/2006 |
| 7066985 | Portable gas fractionalization system A portable gas fractionalization apparatus that provides oxygen rich air to patients is provided. The apparatus is compact, lightweight, and low-noise. The components are assembled in a housing that is divided into two compartments. One compartment is maintained at ... | 06/27/2006 |
| 7029521 | Process and device in connection with the production of oxygen or oxygen enriched air Process in conjunction with the production of oxygen (22), wherein incoming air (10, 16, 16a, 16b,) is brought to pass through a sorbent/zeolite structure (18), which comprises at least three zeolite units (50a–f... | 04/18/2006 |
| 7025801 | Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas The treatment unit comprises N adsorption units, N being greater than or equal to 1, operating on a parametrized cycle split uniformly into at most N phase times. Further more, use is made of a control unit for controlling the treatment unit, designed to modify at l... | 04/11/2006 |
| 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 |
| 7011693 | Control of a hydrogen purifying pressure swing adsorption unit in fuel processor module for hydrogen generation A PSA unit for purifying hydrogen in a fuel processor system. The PSA unit employs rotary valves that cycle the pressurization of vessels, including an adsorbent, between a high pressure state and a low pressure state. The purified hydrogen is released from the vess... | 03/14/2006 |
| 6997970 | Oxygen/inert gas generator A gas generation method and apparatus, capable of use in an aircraft, generates oxygen with at least one On Board Oxygen Generating System (OBOGS) and generates an inert gas with at least one On Board Inert Gas Generating System (OBIGGS) and selectively supplies an ... | 02/14/2006 |
| 6969413 | Exhaust gas filtering system having particulate filter for internal combustion engine A flow rate of gas supplied to a diesel particulate filter is increased when it is determined that rapid combustion of collected particulates, which are collected by the particulate filter, is likely to occur based on an operating state of an internal combustion eng... | 11/29/2005 |
| 6955710 | On-board oxygen production system for aircraft, in particular long-range aircraft Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules... | 10/18/2005 |
| 6949133 | Portable oxygen concentrator A compact and highly portable combination pressure swing adsorption apparatus and product gas conservation device for medical use, to produce efficiently a gas with a high concentration of oxygen and to deliver the oxygen concentrated gas to a user at selectable tim... | 09/27/2005 |
| 6932169 | System and method for developing and recycling drilling fluids A system and method for developing and recycling drilling fluids at the site of a subterranean well is described, thus eliminating the need for transporting the fluids to the site. ... | 08/23/2005 |
| 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 |
| 6921428 | Device and method for separating and collecting halide gas A halide gas separating and collecting device for separating and collecting halide gas from mixed gas containing the halide gas, wherein at least first and second stage separating membrane modules are stacked in multiple stages. The method comprises: feeding the mix... | 07/26/2005 |
| 6908503 | Reduced noise oxygen concentrator A pressure swing adsorption apparatus for producing a gas mixture with a higher concentration of a particular gas such as oxygen from ambient air, in which the noisier components of the apparatus are contained in an internal removable module that is separated by sou... | 06/21/2005 |
