Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7604683 | Gas separation method using adsorbent A gas separation method for separating a specific component gas from a mixed gas using an adsorbent comprises (1) a contact step of bringing a mixed gas into a vessel to contact at a first pressure the mixed gas with an adsorbent whose adsorption property with respe... | 10/20/2009 |
| 7438746 | Off-gas feed method and target gas purification system The invention provides an off-gas feeding method that supplies the off-gas discharged from a plurality of adsorption towers (A, B, C) to an off-gas consumption unit (1), when performing a pressure swing adsorption process of repeating a cycle including a plur... | 10/21/2008 |
| 7404846 | Adsorbents for rapid cycle pressure swing adsorption processes Method for the separation of a gas mixture comprising providing a PSA system with at least one adsorber vessel containing adsorbent material that is selective for the adsorption of carbon monoxide and nitrogen, passing a feed gas mixture containing at least hydrogen... | 07/29/2008 |
| 7399342 | Systems and methods for regulating heating assembly operation through pressure swing adsorption purge control Pressure swing adsorption (PSA) assemblies with purge control systems, and hydrogen-generation assemblies and/or fuel cell systems containing the same. The PSA assemblies are operated according to a PSA cycle to produce a product hydrogen stream and a byproduct stre... | 07/15/2008 |
| 7399341 | Gas purification process A process for the purification of hydrogen based gas mixtures utilizing zeolite X wherein the particle size distribution of the zeolite X powder has a coefficient of variation from about 15% to about 30%. ... | 07/15/2008 |
| 7393382 | Temperature-based breakthrough detection and pressure swing adsorption systems and fuel processing systems including the same Pressure swing adsorption (PSA) assemblies with temperature-based breakthrough detection systems, as well as to hydrogen-generation assemblies and/or fuel cell systems containing the same, and to methods of operating the same. The detection systems are adapted to de... | 07/01/2008 |
| 7390350 | Design and operation methods for pressure swing adsorption systems Method for the separation of a gas mixture comprising providing a pressure swing adsorption system having a plurality of adsorber vessels, wherein each vessel has an inlet, an outlet, and a bed of particulate adsorbent material disposed therein. The adsorbent materi... | 06/24/2008 |
| 7332146 | Method for zero emission liquid hydrogen production from methane and landfill gas Processes, methods, systems and devices for zero emission liquid hydrogen production directly from a variety of methane sources, such as natural gas and landfill gas, are disclosed. Five embodiments of plant designs for liquid hydrogen production are presented. The ... | 02/19/2008 |
| RE40006 | Flow regulated pressure swing adsorption system Pressure swing adsorption (PSA) separation of a gas mixture is performed in an apparatus with a plurality of adsorbent beds. The invention provides rotary multiport distributor valves to control the timing sequence of the PSA cycle steps between the beds, with flow ... | 01/22/2008 |
| 7306651 | Method for treatment of a gaseous mixture comprising hydrogen and hydrogen sulphide A method of treatment of a gas mixture which contains H2, H2S and possibly of other impurities, such as hydrocarbons. The treatment method is aimed at purifying the hydrogen mixture without incurring a overall pressure loss. The method accordin... | 12/11/2007 |
| 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 |
| 7294172 | Helium recovery A gas recovery system comprising a source of gas having a preselected concentration of a desired component (9), at least one application (1) that adds impurities to said gas, and at least one an adsorption system (6) that purifies said gas to pr... | 11/13/2007 |
| 7250074 | Process for separating nitrogen from methane using microchannel process technology The disclosed invention relates to a process for separating methane or nitrogen from a fluid mixture comprising methane and nitrogen, the process comprising: (A) flowing the fluid mixture into a microchannel separator, the microchannel separator comprising a plurali... | 07/31/2007 |
| 7244107 | Home oxygen-compression apparatus An oxygen-compression apparatus has a driving device, multiple rotating wheels, multiple driving rings, multiple rocking cylinders and multiple connecting hoses. The driving device has a driving shaft with a central axis. The rotating wheels are eccentrically attach... | 07/17/2007 |
| 7229944 | Fiber structures including catalysts and methods associated with the same Fiber structures that include a catalytic material are provided. The fiber structures (e.g., membranes) may be formed of interconnected carbon fibers. The catalytic material may be in the form of nanosize particles supported on the fibers. In one method of the inven... | 06/12/2007 |
| 7220697 | Mesoporous carbon molecular sieve and supported catalyst employing the same The present invention is related to a mesoporous carbon molecular sieve, which can be used as a catalyst carrier capable of improving the activity of a supported catalyst and a method of preparing the same. Additionally, the invention is related to a supported catal... | 05/22/2007 |
| 7179324 | Continuous feed three-bed pressure swing adsorption system A three-bed pressure swing adsorption system providing a constant continuous supply gas, preferably containing a hydrogen component, in a multi-step and preferably in a twelve-step, process cycle that can produce a purified gas product, preferably hydrogen, on a con... | 02/20/2007 |
| 7138096 | Method for decomposition oxidation of gaseous pollutants An apparatus is provided for treating pollutants in a gaseous stream. The apparatus comprises tubular inlets for mixing a gas stream with other oxidative and inert gases for mixture and flame production within a reaction chamber. The reaction chamber is heated by he... | 11/21/2006 |
| 7105038 | Gas concentration method and its apparatus The present invention relates a method for concentrating a gas by applying a pressure difference to an adsorbent and an apparatus therefor, and particularly, a method for producing an enriched gas in a large amount by introducing a continuous production into every s... | 09/12/2006 |
| 7041155 | Selective adsorbent for nitrogen and method for separating air using the same A nitrogen selective adsorbent comprises a zeolite of a faujasite crystalline structure containing Li+ and at least one of NH+ and H+ as essential cations, and has a nitrogen adsorption characteristic represented by specific correlat... | 05/09/2006 |
| 7037358 | PSA with adsorbents sensitive to contaminants Disclosed embodiments address contaminant management challenges that arise during production of desirably contaminant free product fluid in the operation of PSA equipment, and further address the more serious challenges that arise under intermittent operation of PSA... | 05/02/2006 |
| 7029517 | Devices and methods for hydrogen storage and generation Disclosed herein is a method for the storage of hydrogen comprising contacting a hydrogen storage composition with a gaseous mixture comprising hydrogen; and irradiating the hydrogen storage composition with radio frequency radiation or microwave radiation in an amo... | 04/18/2006 |
| 7022159 | Process and apparatus for treating a feed gas A process and an apparatus related to the reduction of the level of a component in a feed gas such as air involving passing the gas to at least three parallel thermal swing adsorption zones charged with an adsorbent and operating according to an adsorption cycle, wh... | 04/04/2006 |
| 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 |
| 7013916 | Sub-atmospheric gas delivery method and apparatus An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container is provided which includes a valve body in sealed communication with an outlet orifice of the pressurized container. The outlet orifice of the pressur... | 03/21/2006 |
| 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 |
| 6936091 | System and method for treating fluid using a multi-port valve assembly A valve assembly for use in a gas purification system having a plurality of vessels each having a first port opening and a second port opening. The gas purification system includes a first valve element having a first aperture to selectively connect a first port ope... | 08/30/2005 |
| 6932945 | Adsorbent based gas delivery system with integrated purifier An adsorbent based gas delivery system is provided which includes a storage and dispensing vessel having a gas outlet conduit and an interior section containing a solid-phase physical sorbent medium having physically sorptive affinity for a gas with the sorbent medi... | 08/23/2005 |
| 6916358 | Adsorbent for separating nitrogen from mixed gas of oxygen and nitrogen An adsorbent for separating nitrogen from a mixed gas of oxygen and nitrogen is MSC wherein an oxygen and nitrogen separation ratio α and a ratio (t95/t50) of a time t50 required for adsorbing 50% of the oxygen equilibrium adsorptio... | 07/12/2005 |
| 6913638 | Method for separating hydrogen gas Product gas (Gpro) is separated from material gas (Gmat) by a PSA process utilizing a plurality of adsorption towers (A-C) each loaded with an adsorbent. The separation of the product gas (Gpro) is performed by repeating a cycle comprising an adsorption step, a deco... | 07/05/2005 |
| RE38493 | Flow regulated pressure swing adsorption system Pressure swing adsorption (PSA) separation of a gas mixture is performed in an apparatus with a plurality of adsorbent beds. The invention provides rotary multiport distributor valves to control the timing sequence of the PSA cycle steps between the beds, with flow ... | 04/13/2004 |
| 6709486 | Pressure swing adsorption process with controlled internal depressurization flow A pressure swing adsorption process for recovering a less readily adsorbable component from a feed gas mixture comprising at least one less readily adsorbable component and at least one more readily adsorbable component. The process utilizes a plurality of adsorbent... | 03/23/2004 |
| 6663691 | Method of recovering enriched gaseous oxygen A process is provided for recovering oxygen-rich gas by enriching gaseous oxygen contained in crude gas by a single-tank PSA process which utilizes a single adsorption tower loaded with an adsorbent. A cycle is repeated including introducing crude gas int... | 12/16/2003 |
| 6641644 | Pressure swing adsorption gas separation method and apparatus The present invention is a gas separator for separating a gas mixture into a product gas. The gas separator has an adsorbent bed including a separation chamber with first and second ports and a molecular sieve material contained in the separation chamber.... | 11/04/2003 |
| 6605136 | Pressure swing adsorption process operation and optimization A pressure swing adsorption process which comprises introducing a feed gas mixture into an inlet of an adsorber vessel during a feed period, wherein the feed gas mixture contains a more strongly adsorbable component and a less strongly adsorbable componen... | 08/12/2003 |
| 6579346 | Pressure swing adsorption process A pressure swing adsorption process wherein a constant flow of feed gas and product gas is maintained to and from a pressure swing adsorption installation. A part of repressurization is carried out by a product gas split-off, in three stages, with an addi... | 06/17/2003 |
| 6576043 | Recovery of nitrogen and light hydrocarbons from polyalkene purge gas A method for the separation of a gas mixture comprises (a) obtaining a feed gas mixture comprising nitrogen and at least one hydrocarbon having two to six carbon atoms; (b) introducing the feed gas mixture at a temperature of about 60° F. to about 105° ... | 06/10/2003 |
| 6565628 | Pressure swing adsorption process with reduced pressure equalization time A method to reduce the cycle time in a pressure swing adsorption process by reducing the required pressure equalization time in a cycle, thereby reducing the overall cycle time and increasing product recovery per unit of adsorbent used. This reduces the a... | 05/20/2003 |
| 6527831 | Argon purification process A pressure swing process and system for purifying a first gas, preferably argon, from a crude feed gas stream containing the first gas and second gas(es) utilizes two adsorption beds and continuously promotes the crude feed gas to the bed during the proce... | 03/04/2003 |
| 6524370 | Oxygen production A two bed vacuum swing adsorption process for the production of oxygen is disclosed. Efficient use of air blowers and vacuum pumps maximizes the machine utilization and product gas purges in low flow and high flow modes to increase productivity while less... | 02/25/2003 |
